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- Compositae (33 071)
- Subfamily Asteroideae (Cass.) Lindl. (19 091)
- Tribe Ambrosieae Cass. accepted as Ambrosiinae Less.
- Tribe Anthemideae Cass. (1 976)
- Tribe Astereae Cass. (3 633)
- Subtribe Afroasterinae G.L. Nesom
- Subtribe Asterinae (Cass.) Dumort. (397)
- Genus Alkibias Raf. accepted as Aster L.
- Genus Anactis Raf. accepted as Aster L.
- Genus Arctogeron DC. (1)
- Genus Aster L. (238)
- Subgenus Aster subg. Amellastrum A.Gray
- Subgenus Aster subg. Ascendentes (Rydb.) Semple accepted as Symphyotrichum Nees
- Subgenus Aster subg. Aster
- Subgenus Aster subg. Biotia (Torr. & A.Gray) A.Gray
- Subgenus Aster subg. Biotia DC. ex Torr. & A.Gray
- Subgenus Aster subg. Calliastrum Torr. & A.Gray
- Subgenus Aster subg. Canadanthus (G.L.Nesom) Semple accepted as Canadanthus G.L.Nesom
- Subgenus Aster subg. Conyzopsis (Torr. & A.Gray) A.Gray accepted as Symphyotrichum Nees
- Subgenus Aster subg. Crinitaria (Cass.) P.D.Sell
- Subgenus Aster subg. Doellingeria (Nees) A.Gray accepted as Doellingeria Nees
- Subgenus Aster subg. Eurybia Cass. accepted as Eurybia (Cass.) Gray
- Subgenus Aster subg. Eurybia Cass.
- Subgenus Aster subg. Galatella (Cass.) P.D.Sell
- Subgenus Aster subg. Heleastrum (DC.) A.Gray
- Subgenus Aster subg. Hesperastrum (A.Gray) A.Gray accepted as Dieteria Nutt.
- Subgenus Aster subg. Heteropappus (Less.) H.S.Pak
- Subgenus Aster subg. Ianthe (Torr. & A.Gray) A.Gray accepted as Ionactis Greene
- Subgenus Aster subg. Kalimeris (Cass.) H.S.Pak accepted as Kalimeris (Cass.) Cass.
- Subgenus Aster subg. Kalimeris Cass. accepted as Kalimeris (Cass.) Cass.
- Subgenus Aster subg. Machaeranthera (Nees) A.Gray
- Subgenus Aster subg. Megalastrum (A.Gray) A.Gray
- Subgenus Aster subg. Oreostemma (Greene) Peck
- Subgenus Aster subg. Orthomeris (Torr. & A.Gray) A.Gray accepted as Oclemena Greene
- Subgenus Aster subg. Oxytripolium (DC.) Torr. & A.Gray accepted as Symphyotrichum Nees
- Subgenus Aster subg. Oxytripolium (DC.) A.Gray accepted as Symphyotrichum subg. Astropolium (Nutt.) Semple
- Subgenus Aster subg. Sericocarpus (Nees) A.G.Jones accepted as Sericocarpus Nees
- Subgenus Aster subg. Solidago (L.) Kuntze accepted as Solidago L.
- Subgenus Aster subg. Symphyotrichum (Nees) A.G.Jones accepted as Symphyotrichum Nees
- Subgenus Aster subg. Tripolium (Nees) P.D.Sell
- Subgenus Aster subg. Virgulus (Raf.) A.G.Jones accepted as Symphyotrichum Nees
- Section Aster sect. Acuminati (Alexander) A.G.Jones
- Section Aster sect. Ageratoides (Kitam.) G.L.Nesom
- Section Aster sect. Alpigeni Nees
- Section Aster sect. Angustifolii G.Don
- Section Aster sect. Aster
- Section Aster sect. Asteromoea (Blume) Makino accepted as Kalimeris (Cass.) Cass.
- Section Aster sect. Biotia Torr. & A.Gray
- Section Aster sect. Biotia dc ex Hoffmann
- Section Aster sect. Calimeridei (DC.) G.L.Nesom
- Section Aster sect. Calliastrum (Torr. & A.Gray) Benth.
- Section Aster sect. Calliastrum Torr. & A.Gray
- Section Aster sect. Caroliniani Small accepted as Ampelaster G.L.Nesom
- Section Aster sect. Celmisiana Kuntze
- Section Aster sect. Concinni (Nees) A.G.Jones
- Section Aster sect. Concolores (Torr. & A.Gray) A.G.Jones
- Section Aster sect. Conyzopsis Torr. & A.Gray accepted as Symphyotrichum Nees
- Section Aster sect. Cordifolii G.Don
- Section Aster sect. Cymbalarii G.Don
- Section Aster sect. Doellingeria (Nees) Kitam. accepted as Doellingeria Nees
- Section Aster sect. Dumosi (Torr. & A.Gray) A.G.Jones
- Section Aster sect. Eucephalus (Nutt.) Munz & D.D.Keck ex A.G.Jones accepted as Eucephalus Nutt.
- Section Aster sect. Exiles (Rydb.) A.G.Jones
- Section Aster sect. Glandulosi A.Gray
- Section Aster sect. Grandiflori Torr. & A.Gray accepted as Symphyotrichum Nees
- Section Aster sect. Grandiflori (Torr. & A.Gray) A.G.Jones
- Section Aster sect. Hesterastrum Benth. accepted as Symphyotrichum subg. Astropolium (Nutt.) Semple
- Section Aster sect. Heterastrum Benth. & Hook.f. accepted as Symphyotrichum Nees
- Section Aster sect. Heterophylli (Nees) A.G.Jones
- Section Aster sect. Heterophylli (Nees) A.Gray
- Section Aster sect. Kalimeris (Cass.) Nees ex O.Hoffm. accepted as Kalimeris (Cass.) Cass.
- Section Aster sect. Leucoma Nutt.
- Section Aster sect. Machaeranthera (Nees) Benth. & Hook.f.
- Section Aster sect. Macrocephali (Kitam.) A.G.Jones
- Section Aster sect. Multiflori (A.Gray) R.A.Nelson ex A.G.Jones
- Section Aster sect. Nemorali House accepted as Oclemena Greene
- Section Aster sect. Noticastrum Benth. & Hook.f. accepted as Noticastrum DC.
- Section Aster sect. Oblongifolii (Rydb.) A.G.Jones
- Section Aster sect. Occidentales (Rydb.) A.G.Jones accepted as Symphyotrichum sect. Occidentales (Rydb.) G.L.Nesom
- Section Aster sect. Olearia F.Muell.
- Section Aster sect. Oritrophium Kunth accepted as Oritrophium (Kunth) Cuatrec.
- Section Aster sect. Oritrophium Torr. & A.Gray
- Section Aster sect. Orthomeris (Torr. & A.Gray) Benth. & Hook.f. accepted as Oclemena Greene
- Section Aster sect. Orthomeris Torr. & A.Gray
- Section Aster sect. Oxytripolium (DC.) Torr. & A.Gray accepted as Symphyotrichum subg. Astropolium (Nutt.) Semple
- Section Aster sect. Patentes (Torr. & A.Gray) A.G.Jones
- Section Aster sect. Pauciflori (Rydb.) A.G.Jones accepted as Almutaster Á.Löve & D.Löve
- Section Aster sect. Polyliguli (Semple & Brouillet) Semple
- Section Aster sect. Porteriani (Rydb.) A.G.Jones
- Section Aster sect. Ptarmicoidei House accepted as Solidago sect. Ptarmicoidei (House) Semple & Gandhi
- Section Aster sect. Radulini (Rydb.) A.G.Jones
- Section Aster sect. Sagittiferi (A.Gray) A.G.Jones accepted as Ampelaster G.L.Nesom
- Section Aster sect. Sagittiferi A.Gray accepted as Ampelaster G.L.Nesom
- Section Aster sect. Salicifolii Torr. & A.Gray accepted as Symphyotrichum Nees
- Section Aster sect. Salicifolii (Torr. & A.Gray) A.G.Jones
- Section Aster sect. Sericeo-Concolores A.Gray
- Section Aster sect. Sericocarpus (Nees) Semple accepted as Sericocarpus Nees
- Section Aster sect. Serratifolii Loudon accepted as Sericocarpus Nees
- Section Aster sect. Shawia Kuntze
- Section Aster sect. Spinosi (Alexander) A.G.Jones accepted as Chloracantha G.L.Nesom, Y.B.Suh, D.R.Morgan, S.D.Sundb. & B.B.Simpson
- Section Aster sect. Tatarica Koroljuk
- Section Aster sect. Teretiachaenium Kitam.
- Section Aster sect. Triplopappus (Torr. & A.Gray) A.G.Jones accepted as Doellingeria Nees
- Section Aster sect. Turbinelli (Rydb.) A.G.Jones
- Subsection Aster subsect. Biotia (DC. ex Torr. & A.Gray) Semple
- Subsection Aster subsect. Chapmaniani Semple accepted as Symphyotrichum subg. Chapmaniani (Semple) Semple
- Subsection Aster subsect. Divergentes (A.Gray) A.G.Jones
- Subsection Aster subsect. Dumosi (Torr. & A.Gray) A.G.Jones
- Subsection Aster subsect. Eryngiifolii (Alexander) Semple
- Subsection Aster subsect. Eucephalus (Nutt.) Benth. accepted as Eucephalus Nutt.
- Subsection Aster subsect. Foliacei (Rydb.) A.G.Jones
- Subsection Aster subsect. Heleastrum (DC.) Benth.
- Subsection Aster subsect. Heterophylli (Nees) Semple
- Subsection Aster subsect. Heterophylli (Nees) A.Gray
- Subsection Aster subsect. Homochaeta Onno
- Subsection Aster subsect. Homophyllis A.Gray
- Subsection Aster subsect. Laeves A.Gray
- Subsection Aster subsect. Leucanthi (Nees) A.G.Jones
- Subsection Aster subsect. Occidentales (Rydb.) A.G.Jones accepted as Symphyotrichum sect. Occidentales (Rydb.) G.L.Nesom
- Subsection Aster subsect. Porteriani (Rydb.) Semple
- Subsection Aster subsect. Sagittiferi A.Gray
- Subsection Aster subsect. Salicifolii (Torr. & A.Gray) A.G.Jones accepted as Symphyotrichum Nees
- Subsection Aster subsect. Spectabiles A.Gray
- Subsection Aster subsect. Turbinelli (Rydb.) A.G.Jones
- Subsection Aster subsect. Vulgares A.Gray
- Series Aster ser. Ageratoides Kitam.
- Series Aster ser. Albescentes Y.Ling
- Series Aster ser. Asteroides Y.Ling
- Series Aster ser. Auriculati Y.Ling
- Series Aster ser. Batangenses Y.Ling
- Series Aster ser. Bipinnatisecti (Grierson) Y.Ling
- Series Aster ser. Diplostephioides Y.Ling
- Series Aster ser. Falcifolii Y.Ling
- Series Aster ser. Fuscescentes Y.Ling
- Series Aster ser. Gracilicaules Y.Ling
- Series Aster ser. Hersileoides Y.Ling
- Series Aster ser. Itsunboshiani Y.Ling
- Series Aster ser. Latibracteati Y.Ling
- Series Aster ser. Macrocephali Kitam.
- Series Aster ser. Macrochaeti Onno
- Series Aster ser. Molliusculi Y.Ling
- Series Aster ser. Prainiani Y.Ling
- Series Aster ser. Retusi Y.Ling
- Series Aster ser. Salwinenses Y.Ling
- Series Aster ser. Senecioides Y.Ling
- Series Aster ser. Sibirica Zdor.
- Series Aster ser. Sikkimenses Y.Ling
- Series Aster ser. Smithiani Y.Ling
- Series Aster ser. Taliangshanenses Y.Ling
- Series Aster ser. Tongolenses Y.Ling
- Series Aster ser. Vestiti Y.Ling
- Species Aster ×gravesii E.S.Burgess ex Britton
- Species Aster abatus S.F.Blake accepted as Xylorhiza tortifolia (Torr. & A.Gray) Greene
- Species Aster abbreviatus Nees accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster abchasicus Kem.-Nath. accepted as Kemulariella abchasica (Kem.-Nath.) Tamamsch.
- Species Aster abyssinicus Sch.Bip. accepted as Felicia dentata subsp. dentata (A.Rich.) Dandy
- Species Aster abyssinicus Hochst. ex A.Rich. accepted as Felicia dentata (A.Rich.) Dandy
- Species Aster abyssinicus (Sch.Bip.) Kuntze accepted as Felicia abyssinica Sch.Bip. ex A.Rich.
- Species Aster acadiensis Shinners accepted as Symphyotrichum lateriflorum var. tenuipes (Wiegand) G.L.Nesom
- Species Aster acaulis Wedd. accepted as Noticastrum marginatum (Kunth) Cuatrec.
- Species Aster acer Roehl.
- Species Aster acerosus (Bertero) Kuntze accepted as Haplopappus acerosus Bertero
- Species Aster acmellus Pall. accepted as Aster amellus L.
- Species Aster acradenius (Greene) Kuntze accepted as Isocoma acradenia (Greene) Greene
- Species Aster acris S.G.Gmel.
- Species Aster acris Lapeyr.
- Species Aster acris Leyss.
- Species Aster acris Willd.
- Species Aster acris L. accepted as Galatella sedifolia (L.) Greuter
- Species Aster aculeatus Labill. accepted as Olearia ramulosa (Labill.) Benth.
- Species Aster acuminatus Nees
- Species Aster acuminatus Michx. accepted as Oclemena acuminata (Michx.) Greene
- Species Aster acutidens Smyth
- Species Aster adalbertii Kuntze accepted as Haplopappus integerrimus (Hook. & Arn.) H.M.Hall
- Species Aster adelberti Kuntze
- Species Aster adenolasius F.Muell. accepted as Olearia adenolasia (F.Muell.) F.Muell. ex Benth.
- Species Aster adenolepis S.F.Blake accepted as Dieteria bigelovii var. mucronata (Greene) D.R.Morgan & R.L.Hartm.
- Species Aster adenophorus (F.Muell.) F.Muell. accepted as Olearia adenophora (F.Muell.) Benth.
- Species Aster adfinis Less. accepted as Felicia dubia Cass.
- Species Aster adnatus Nutt. accepted as Symphyotrichum adnatum (Nutt.) G.L.Nesom
- Species Aster adscendens Lindl. ex DC.
- Species Aster adscendens Lindl.
- Species Aster adscendens (DC.) Reiche accepted as Noticastrum adscendens DC.
- Species Aster adsurgens Greene
- Species Aster adulterinus Willd. accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster adustus (Maxim.) Koidz. ex Nakai accepted as Aster ageratoides Turcz.
- Species Aster aestivus Dryand.
- Species Aster aestivus Rothr. accepted as Symphyotrichum spathulatum (Lindl.) G.L.Nesom
- Species Aster aestivus Dryand. ex Aiton accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster aestivus A.Gray accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster aethiopicus Burm.f. accepted as Felicia aethiopica subsp. aethiopica (Burm.f.) Bolus & Wolley-Dod ex Adamson & T.M.Salt
- Species Aster ageratoides Turcz.
- Species Aster agrostifolius E.S.Burgess accepted as Symphyotrichum lateriflorum var. angustifolium (Wiegand) G.L.Nesom
- Species Aster aitchisonii Boiss.
- Species Aster aitonii J.Forbes
- Species Aster alamanii Kuntze accepted as Solidago velutina DC.
- Species Aster alatipes Hemsl.
- Species Aster alatus Aikin accepted as Symphyotrichum patens (Aiton) G.L.Nesom
- Species Aster albanicus (Degen) Csiki & al. accepted as Galatella albanica Degen
- Species Aster albanicus (Degen) Degen accepted as Galatella albanica Degen
- Species Aster albarracinensis Pau accepted as Galatella aragonensis (Asso) Nees
- Species Aster alberti Phil.
- Species Aster albertii Phil. accepted as Erigeron gilliesii (Hook. & Arn.) Cabrera
- Species Aster albescens (DC.) Wall. ex Hand.-Mazz.
- Species Aster albidus (Hook.f.) Kuntze accepted as Olearia albida (Hook.f.) Hook.f.
- Species Aster albus Eaton & J.Wright
- Species Aster albus Reiche accepted as Noticastrum sericeum (Less.) Less. ex Phil.
- Species Aster albus (Phil.) Kuntze accepted as Noticastrum sericeum (Less.) Less. ex Phil.
- Species Aster albus (Nutt.) Eaton accepted as Solidago ptarmicoides (Torr. & A.Gray) B.Boivin
- Species Aster albus Willd. ex Spreng. accepted as Aster amellus L.
- Species Aster albus (Nutt.) Eaton & Wright accepted as Solidago ptarmicoides (Torr. & A.Gray) B.Boivin
- Species Aster alleghaniensis E.S.Burgess
- Species Aster alpicola (F.Muell.) F.Muell. accepted as Olearia alpicola (F.Muell.) F.Muell. ex Benth.
- Species Aster alpigenus (Torr. & A.Gray) A.Gray accepted as Oreostemma alpigenum (Torr. & A.Gray) Greene
- Species Aster alpinoamellus Novopokr. ex Tzvelev
- Species Aster alpinus L.
- Species Aster alpinus Gueldenst. ex Ledeb.
- Species Aster altaicus Willd. accepted as Kalimeris altaica (Willd.) Nees ex Fisch.Mey. & Avé-Lall.
- Species Aster altissimus Mill.
- Species Aster altissimus Moench accepted as Symphyotrichum novae-angliae (L.) G.L.Nesom
- Species Aster alwartensis Lodd.
- Species Aster alwartensis Lodd. ex Sims. accepted as Erigeron pulchellus Michx.
- Species Aster alyssoides Turcz. accepted as Asterothamnus alyssoides (Turcz.) Novopokr.
- Species Aster amabilis Wender. ex Nees
- Species Aster amabilis Wender.
- Species Aster amani Post accepted as Galatella amani (Post) Grierson
- Species Aster ambiguus Bernh. ex E.S.Burgess
- Species Aster ambiguus Bernh.
- Species Aster ambiguus (DC.) E.H.L.Krause accepted as Erigeron bonariensis L.
- Species Aster ambiguus Bernh. ex Nees accepted as Eurybia macrophylla (L.) Cass.
- Species Aster ambiouus berrnh ex Burgess
- Species Aster amelloides Hoffm. accepted as Aster amellus L.
- Species Aster amelloides Besser accepted as Aster amellus subsp. bessarabicus (Bernh. ex Rchb.) Soó
- Species Aster amellus L.
- Species Aster amellus Aitch. accepted as Aster indamellus Grierson
- Species Aster americana Houston
- Species Aster americanus Onno accepted as Aster alpinus subsp. vierhapperi Onno
- Species Aster amethystina Nutt.
- Species Aster amethystinus Nutt. accepted as Symphyotrichum ×amethystinum (Nutt.) G.L.Nesom
- Species Aster ammani Lindl. ex DC. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster amnicola E.S.Burgess
- Species Aster amoenus Lam. accepted as Symphyotrichum puniceum (L.) Á.Löve & D.Löve
- Species Aster amoenus (Sch.Bip.) Harv. accepted as Felicia amoena subsp. amoena (Sch.Bip.) Levyns
- Species Aster amplexicaulis Muhl. ex Willd.
- Species Aster amplexicaulis Muhl. ex Lam.
- Species Aster amplexicaulis Michx. accepted as Symphyotrichum patens var. patens (Aiton) G.L.Nesom
- Species Aster amplexicaulis (Torr. & A.Gray) Kuntze accepted as Solidago amplexicaulis Torr. & A.Gray
- Species Aster amplexifolius Rydb. accepted as Eurybia integrifolia (Nutt.) G.L.Nesom
- Species Aster ampliatus E.S.Burgess
- Species Aster amplifolius (Wooton & Standl.) Kittell accepted as Dieteria asteroides Torr.
- Species Aster amplissimus Greene
- Species Aster amplus Lindl.
- Species Aster amplus Lindl. ex DC.
- Species Aster amygdalinus Lam. accepted as Doellingeria umbellata var. umbellata (Mill.) Nees
- Species Aster anacampthiphyllus Dalla Torre & Sarnth. accepted as Linosyris anacamphthiphylla Ambrosi
- Species Aster ananthocladus Hilliard & B.L.Burtt
- Species Aster andersonii E.Forst. ex J.Forbes
- Species Aster andersonii (A.Gray) A.Gray accepted as Oreostemma alpigenum var. andersonii (A.Gray) G.L.Nesom
- Species Aster andicola Hauman accepted as Erigeron andicola DC.
- Species Aster andinus Nutt.
- Species Aster andinus Kuntze accepted as Haplopappus pinnatifidus Nutt.
- Species Aster andohahelensis Humbert accepted as Madagaster andohahelensis (Humbert) G.L.Nesom
- Species Aster andrewsii A.Nelson
- Species Aster andringitrensis Humbert
- Species Aster andryaloides (DC.) B.Fedtsch. accepted as Leucheria rosea Poepp. ex Less.
- Species Aster anethifolius (Phil.) Kuntze accepted as Grindelia anethifolia (Phil.) Adr.Bartoli & Tortosa
- Species Aster angelandri Kuntze accepted as Oonopsis engelmannii (A.Gray) Greene
- Species Aster angulatus (Kirk) Kuntze accepted as Olearia albida var. angulata (Kirk) Allan
- Species Aster angustatus Kuntze accepted as Olearia oleifolia Kirk
- Species Aster angustatus (Lindl.) Torr. & A.Gray accepted as Symphyotrichum ciliatum (Ledeb.) G.L.Nesom
- Species Aster angustifolia
- Species Aster angustifolius Chang accepted as Aster sinoangustifolius Brouillet, Semple & Y. L. Chen
- Species Aster angustifolius C.C.Chang accepted as Miyamayomena angustifolia (Hand.-Mazz.) Y.L.Chen
- Species Aster angustifolius Lindl. ex Royle accepted as Kalimeris altaica (Willd.) Nees ex Fisch.Mey. & Avé-Lall.
- Species Aster angustifolius Lindl. accepted as Kalimeris altaica (Willd.) Nees ex Fisch.Mey. & Avé-Lall.
- Species Aster angustifolius Jacq. accepted as Felicia hyssopifolia subsp. hyssopifolia (P.J.Bergius) Nees
- Species Aster angustissimus Tausch accepted as Galatella angustissima (Tausch) Novopokr.
- Species Aster angustus (Lindl.) Torr. & A.Gray
- Species Aster angustus Nees accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster angustus Schur accepted as Aster kayserianus Schur
- Species Aster annectens Harv. accepted as Felicia annectens (Harv.) Grau
- Species Aster annuus L. accepted as Erigeron annuus (L.) Desf.
- Species Aster anomalus Engelm.
- Species Aster anomalus Engelm. ex Torr. & A.Gray accepted as Symphyotrichum anomalum (Engelm. ex Engelm.) G.L.Nesom
- Species Aster ansif Mart.
- Species Aster ansifer Bosser. accepted as Macowania ericifolia (Forssk.) B.L.Burtt & Grau
- Species Aster anthylloides (Meyen & Walp.) Kuntze accepted as Haplopappus anthylloides Meyen & Walp.
- Species Aster anticostensis Fernald accepted as Symphyotrichum anticostense (Fernald) G.L.Nesom
- Species Aster antirrhinifolius Salisb. accepted as Felicia cymbalariae (Aiton) Bolus & Wolley-Dod ex Adamson & T.M.Salter
- Species Aster antucensis (Phil.) Kuntze accepted as Noticastrum antucense Phil.
- Species Aster apargiodes Kuntze
- Species Aster apinnatifidus (Mat.) Makino
- Species Aster apricus (A.Gray) Rydb. accepted as Symphyotrichum foliaceum var. apricum (A.Gray) G.L.Nesom
- Species Aster aquifolius (Greene ex Wooton & Standl.) S.F.Blake accepted as Dieteria bigelovii var. bigelovii (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster aragonensis bout. ex Willk. & Lange accepted as Aster willkommii Sch.Bip.
- Species Aster aragonensis Asso accepted as Galatella aragonensis (Asso) Nees
- Species Aster araucanus (Phil.) Kuntze accepted as Grindelia anethifolia (Phil.) Adr.Bartoli & Tortosa
- Species Aster arborescens Kuntze accepted as Olearia arborescens (G.Forst.) Cockayne & Laing
- Species Aster arbutoides (J.Rémy) Kuntze accepted as Haplopappus glutinosus Cass.
- Species Aster archerianus Kuntze accepted as Solidago rugosa Mill.
- Species Aster arcifolius E.S.Burgess
- Species Aster arcticus Eastw.
- Species Aster arcuatus E.S.Burgess
- Species Aster ardens E.S.Burgess
- Species Aster ardense J.Forbes
- Species Aster arenarioides D.C.Eaton
- Species Aster arenarioides A.Gray accepted as Erigeron arenarioides (D.C.Eaton ex A.Gray) A.Gray ex Rydb.
- Species Aster arenarius (Kitam.) Nemoto
- Species Aster arenicola E.S.Burgess
- Species Aster arenosus (A.Heller) S.F.Blake accepted as Chaetopappa ericoides (Torr.) G.L.Nesom
- Species Aster argenteus Michx. accepted as Symphyotrichum sericeum (Vent.) G.L.Nesom
- Species Aster argentinensis Cabrera accepted as Noticastrum argentinense (Cabrera) Cuatrec.
- Species Aster argillarius E.S.Burgess
- Species Aster argillicola M.Peck
- Species Aster argillicola Peck
- Species Aster argophyllus Labill. accepted as Olearia argophylla (Labill.) F.Muell. ex Benth.
- Species Aster argunensis DC. accepted as Aster flaccidus Bunge
- Species Aster arguta Kuntze
- Species Aster argutus (Aiton) Kuntze accepted as Solidago arguta Aiton
- Species Aster argutus Nees accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster argutus R.Br. ex Benth. accepted as Olearia arguta (R.Br.) Benth.
- Species Aster argyi H.Lév.
- Species Aster argyropholis Hand.-Mazz.
- Species Aster armenus (Boiss.) Kuntze accepted as Galatella sedifolia subsp. dracunculoides (Lam.) Greuter
- Species Aster armeriifolius Greene accepted as Symphyotrichum ascendens (Lindl.) G.L.Nesom
- Species Aster armeriodes Kuntze accepted as Stenotus armerioides var. armerioides Nutt.
- Species Aster armoricanus Rouy
- Species Aster armoricanus (Rouy) A.W.Hill accepted as Galatella linosyris subsp. armoricana (Rouy) Greuter
- Species Aster arragonensis Auct.
- Species Aster artemisiiflorus Poir. accepted as Symphyotrichum tradescantii (L.) G.L.Nesom
- Species Aster artemisioides F.Muell. accepted as Olearia tubuliflora Benth.
- Species Aster asae Kuntze accepted as Ericameria paniculata (A.Gray) A.Gray ex Rydb.
- Species Aster asa-grayi Makino
- Species Aster ascendens Lindl.
- Species Aster ascendens Lindl. accepted as Symphyotrichum ascendens (Lindl.) G.L.Nesom
- Species Aster aspargioides (A.Gray) Kuntze accepted as Pyrrocoma apargioides (A.Gray) Greene
- Species Aster asper Nees
- Species Aster asper Buch.-Ham. ex DC.
- Species Aster asper (Less.) Schönland accepted as Aster bakerianus Burtt Davy ex C.A.Sm.
- Species Aster asper Schönland accepted as Aster bakerianus Burtt Davy ex C.A.Sm.
- Species Aster asperatus Kuntze accepted as Solidago patula Muhl. ex Willd.
- Species Aster asperellus (Rech.f. & Köie) Leins & Podlech accepted as Varthemia asperella Rech.f. & Köie
- Species Aster asperifolius E.S.Burgess accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster asperrimus Less.
- Species Aster asperrimus Wall.
- Species Aster asperrimus Nutt. accepted as Symphyotrichum grandiflorum (L.) G.L.Nesom
- Species Aster asperugineus D.C.Eaton accepted as Erigeron asperugineus (D.C.Eaton) A.Gray
- Species Aster asperulus Nees
- Species Aster asperulus Wall.
- Species Aster asperulus (DC.) Wall. ex Hook.f. accepted as Aster peduncularis Wall. ex Nees
- Species Aster asperulus Torr. & A.Gray accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster associatus Kitag. accepted as Kalimeris lautureana (Debeaux) Kitam.
- Species Aster asterellus Bornm. accepted as Chamaegeron asterellus (Bornm.) Botsch.
- Species Aster asteroides (DC.) Kuntze
- Species Aster asteroides (Colla) Rusby accepted as Aster squamatus (Spreng.) Hieron.
- Species Aster asteroides (L.) MacMill. accepted as Sericocarpus asteroides (L.) Britton, Sterns & Poggenb.
- Species Aster asterotrichus (F.Muell.) F.Muell. accepted as Olearia asterotricha (F.Muell.) F.Muell. ex Benth.
- Species Aster atacamensis (Phil.) Kuntze accepted as Haplopappus rigidus Phil.
- Species Aster atenes Kuntze accepted as Haplopappus angustifolius (DC.) Reiche
- Species Aster atrovirens E.S.Burgess
- Species Aster attenuatus Lindl. accepted as Symphyotrichum laeve var. purpuratum (Nees) G.L.Nesom
- Species Aster attenuatus Lindl. ex Hook. accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster attenuatus (Howell) M.Peck accepted as Corethrogyne filaginifolia (Hook. & Arn.) Nutt.
- Species Aster attenuatus (Howell) Frye & Rigg accepted as Corethrogyne filaginifolia (Hook. & Arn.) Nutt.
- Species Aster atticus Pall. accepted as Aster amellus L.
- Species Aster aucuparius E.S.Burgess
- Species Aster aurantius L. accepted as Adenophyllum aurantium (L.) Strother
- Species Aster aureus (A.Gray) Kuntze accepted as Rayjacksonia aurea (A.Gray) R.L.Hartm. & M.A.Lane
- Species Aster aureus D.Don accepted as Solidago aurea Spreng.
- Species Aster auriculatus Franch.
- Species Aster auriculatus Schloss. ex Nyman accepted as Symphyotrichum ×salignum (Willd.) G.L.Nesom
- Species Aster auritus Lindl.
- Species Aster auritus Lindl. ex DC. accepted as Symphyotrichum patens (Aiton) G.L.Nesom
- Species Aster australis Hort. ex DC. accepted as Olearia ramulosa (Labill.) Benth.
- Species Aster autranii Post accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster autumnalis Wender. ex Nees, sec.Torr. & A.Gray accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster avicenniifolia (Hook.f.) F.Muell.
- Species Aster avicenniifolius (Hook.f.) Kuntze accepted as Olearia avicenniifolia (Raoul) Hook.f.
- Species Aster avicenniifolius (Hook.f.) F.Muell. accepted as Olearia avicenniifolia (Raoul) Hook.f.
- Species Aster avitus Alexander accepted as Eurybia avita (Alexander) G.L.Nesom
- Species Aster axillaris (DC.) F.Muell.
- Species Aster azureus Lindl. accepted as Symphyotrichum oolentangiense (Riddell) G.L.Nesom
- Species Aster baccharodes Kuntze accepted as Solidago occidentalis (Nutt.) Torr. & A.Gray
- Species Aster baccharoides (Benth.) Steetz
- Species Aster bachtiaricus Mozaff. accepted as Iranoaster bachtiaricus (Mozaff.) Kaz.Osaloo, Farhani & Mozaff.
- Species Aster bahamensis Britton
- Species Aster bakerensis H.St.John
- Species Aster bakerianus Burtt Davy ex C.A.Sm.
- Species Aster baldwinii Torr. & A.Gray accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster ballii F.Muell. accepted as Olearia ballii (F.Muell.) F.Muell. ex Hemsl.
- Species Aster bangii Rusby accepted as Aster squamatus (Spreng.) Hieron.
- Species Aster barbatus (DC.) Harv. accepted as Felicia ovata (Thunb.) Compton
- Species Aster barbellatus Grierson
- Species Aster barcinonensis Sennen accepted as Aster squamatus (Spreng.) Hieron.
- Species Aster baronii Humbert accepted as Madagaster senecionoides (Baker) G.L.Nesom
- Species Aster barrelieri Pau
- Species Aster batakensis Hayata accepted as Aster hispidus Thunb.
- Species Aster batangensis Bureau & Franch.
- Species Aster batesii Rydb.
- Species Aster batesii Rydb. accepted as Symphyotrichum ×batesii (Rydb.) G.L.Nesom
- Species Aster baylahuen (J.Rémy) Kuntze accepted as Haplopappus baylahuen J.Rémy
- Species Aster beckleri (F.Muell.) F.Muell. accepted as Olearia cydoniifolia (DC.) Benth.
- Species Aster behrii Schltdl. accepted as Vittadinia australis A.Rich.
- Species Aster behringensis Gand.
- Species Aster bellidiastrum Nees ex Walp.
- Species Aster bellidiastrum Nees accepted as Erigeron andicola DC.
- Species Aster bellidiastrum (L.) Scop. accepted as Bellidastrum michelii Cass.
- Species Aster bellidiflorus Nees accepted as Symphyotrichum tradescantii (L.) G.L.Nesom
- Species Aster bellidiflorus Steud. accepted as Eurybia spectabilis (Sol. ex Aiton) G.L.Nesom
- Species Aster bellidiflorus Willd. accepted as Symphyotrichum lanceolatum var. lanceolatum (Willd.) G.L.Nesom
- Species Aster bellidioides Baker
- Species Aster bellidioides Buch.-Ham. ex D.Don accepted as Erigeron bellidioides (Hook.f.) S.J.Forbes & D.I.Morris
- Species Aster bellis Krause
- Species Aster bellis E.H.L.Krause accepted as Bellis perennis L.
- Species Aster bellus S.F.Blake
- Species Aster benghalensis B.Heyne ex DC. accepted as Erigeron sublyratus Roxb. ex DC.
- Species Aster benthamii F.Muell.
- Species Aster benthamii Steetz accepted as Aster ageratoides var. firmus (Diels) Hand.-Mazz.
- Species Aster berberidis (A.Gray) Kuntze accepted as Hazardia berberidis (A.Gray) Greene
- Species Aster berberifolius A.Cunn. ex DC. accepted as Olearia myrsinoides (Labill.) F.Muell. ex Benth.
- Species Aster bergerianus (Spreng.) Harv. accepted as Felicia bergeriana (Spreng.) O.Hoffm.
- Species Aster bergianus Harv.
- Species Aster berlandieri Kuntze accepted as Isocoma drummondii (Torr. & A.Gray) Greene
- Species Aster bernardinus H.M.Hall accepted as Symphyotrichum defoliatum (Parish) G.L.Nesom
- Species Aster berteroi (DC.) Kuntze accepted as Haplopappus chrysanthemifolius (Less.) DC.
- Species Aster bessarabicus Bernh. ex Rchb. accepted as Aster amellus subsp. bessarabicus (Bernh. ex Rchb.) Soó
- Species Aster beterochaeta Benth.
- Species Aster bezanillana (J.Rémy) Kuntze accepted as Haplopappus bezanillanus (J.Rémy) Reiche
- Species Aster bicolor (L.) Nees accepted as Solidago bicolor L.
- Species Aster bicolor Dietr. ex DC. accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster bidwillii Kuntze accepted as Olearia virgata (Hook.f.) Hook.f.
- Species Aster biennis (Lindl. ex DC.) Ledeb. ex Franch.
- Species Aster biennis Ledeb. accepted as Kalimeris tatarica Lindl. ex DC.
- Species Aster biennis Torr. accepted as Symphyotrichum falcatum var. commutatum (Torr. & A.Gray) G.L.Nesom
- Species Aster biennis Nutt. accepted as Dieteria canescens (Pursh) Nutt.
- Species Aster bietii Franch.
- Species Aster bifidus Nees accepted as Galatella sedifolia subsp. dracunculoides (Lam.) Greuter
- Species Aster biflorus (L.) Druce accepted as Galatella sedifolia subsp. biflora (L.) Sennikov
- Species Aster biflorus presc. ex DC. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster biflorus Michx. accepted as Eurybia radula (Sol. ex Aiton) G.L.Nesom
- Species Aster bifoliatus (Walter) Ahles
- Species Aster bifoliatus (Walter) H.E.Ahles accepted as Sericocarpus tortifolius (Michx.) Nees
- Species Aster biformis (E.S.Burgess) E.S.Burgess
- Species Aster bifrons Lindl.
- Species Aster bifrons Lindl. ex DC. accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster bifrons All. accepted as Inula bifrons L.
- Species Aster bigelovii A.Gray accepted as Dieteria bigelovii (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster bimater Standl. & Steyerm. accepted as Symphyotrichum trilineatum (Sch.Bip. ex Klatt) G.L.Nesom
- Species Aster binominatus Kuntze accepted as Ericameria nauseosa var. bigelovii (A.Gray) G.L.Nesom & G.I.Baird
- Species Aster bipinnatisectus Ludlow ex Grierson
- Species Aster blakei (Porter) House accepted as Oclemena ×blakei (Porter) G.L.Nesom
- Species Aster blakei (Porter) Porter accepted as Oclemena ×blakei (Porter) G.L.Nesom
- Species Aster blanchetii (Baker) Hieron.
- Species Aster blandus Pursh accepted as Symphyotrichum puniceum (L.) Á.Löve & D.Löve
- Species Aster blepharophyllus A.Gray accepted as Arida blepharophylla (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster blinii H.Lév.
- Species Aster bloomeri (A.Gray) Kuntze accepted as Ericameria bloomeri (A.Gray) J.F.Macbr.
- Species Aster bloomeri A.Gray accepted as Symphyotrichum campestre (Nutt.) G.L.Nesom
- Species Aster bodinieri H.Lév.
- Species Aster bodkinii Compton accepted as Felicia filifolia subsp. bodkinii (Compton) Grau
- Species Aster boergeri Herter
- Species Aster bojeri Humbert
- Species Aster bolanderi (A.Gray) Kuntze accepted as Ericameria bolanderi (A.Gray) G.L.Nesom & G.I.Baird
- Species Aster boltoniae Greene accepted as Psilactis asteroides A.Gray
- Species Aster bonariensis Spreng. accepted as Erigeron glaucus Ker Gawl.
- Species Aster bonplandii Kuntze accepted as Solidago simplex var. simplex
- Species Aster borealis (Torr. & A.Gray) Prov. accepted as Symphyotrichum boreale (Torr. & A.Gray) Á.Löve & D.Löve
- Species Aster borreri J.Forbes
- Species Aster bostoniensis Hort. ex Baker accepted as Symphyotrichum ×amethystinum (Nutt.) G.L.Nesom
- Species Aster botryanthus K.Koch accepted as Symphyotrichum foliaceum (Lindl. ex DC.) G.L.Nesom
- Species Aster boweri Hemsl. accepted as Heteropappus boweri (Hemsl.) Grierson
- Species Aster bowerii Hemsl.
- Species Aster bowiei Harv.
- Species Aster boykinii E.S.Burgess accepted as Eurybia divaricata (L.) G.L.Nesom
- Species Aster bracei Britton
- Species Aster bracei Britton ex Small accepted as Symphyotrichum tenuifolium var. aphyllum (R.W.Long) S.D.Sundb.
- Species Aster brachyactis S.F.Blake accepted as Symphyotrichum ciliatum (Ledeb.) G.L.Nesom
- Species Aster brachycomoides F.Muell. accepted as Camptacra gracilis (Benth.) Lander
- Species Aster brachylepis (A.Gray) Kuntze accepted as Ericameria brachylepis (A.Gray) H.M.Hall
- Species Aster brachypholis Small accepted as Symphyotrichum racemosum (Elliott) G.L.Nesom
- Species Aster brachyphyllus C.C.Chang
- Species Aster brachyphyllus Chang
- Species Aster brachyphyllus (Sond.) F.Muell. accepted as Olearia brachyphylla (F.Muell. ex Sond.) N.A.Wakef.
- Species Aster brachytrichus Franch.
- Species Aster bracteatus Turcz. ex Herder accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster bracteolatus Nutt. accepted as Symphyotrichum eatonii (A.Gray) G.L.Nesom
- Species Aster brandegeei (A.Gray) Kuntze accepted as Erigeron aureus Greene
- Species Aster brevibracteatus Rydb.
- Species Aster brevicaulis W.P.Li
- Species Aster breviflorus Phil. accepted as Erigeron fasciculatus Colla
- Species Aster brevilingulatus (Sch.Bip. ex Hemsl.) McVaugh accepted as Psilactis brevilingulata Sch.Bip. ex Hemsl.
- Species Aster brevipedunculatus Hutch. accepted as Felicia fruticosa subsp. brevipedunculata (Hutch.) Grau
- Species Aster brevipes Benth. accepted as Aster baccharoides (Benth.) Steetz
- Species Aster brevis Hand.-Mazz.
- Species Aster breviscapus Vaniot accepted as Erigeron breviscapus (Vaniot) Hand.-Mazz.
- Species Aster breweri (A.Gray) Semple
- Species Aster breyninus (Beck) Fritsch accepted as Aster alpinus L.
- Species Aster brickellioides Greene accepted as Eucephalus tomentellus (Greene) Greene
- Species Aster britannicus All. accepted as Inula britannica L.
- Species Aster brittonii Kuntze accepted as Solidago wrightii A.Gray
- Species Aster brumalis Nees accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster bubonium Scop. accepted as Inula spiraeifolia L.
- Species Aster buchananii Kuntze accepted as Olearia alpicola (F.Muell.) F.Muell. ex Benth.
- Species Aster buchubergensis Dinter accepted as Felicia hirsuta DC.
- Species Aster buckleyi (Torr. & A.Gray) Kuntze accepted as Solidago buckleyi Torr. & A.Gray
- Species Aster bullatus Klatt accepted as Symphyotrichum bullatum (Klatt) G.L.Nesom
- Species Aster bulleyanus Jeffrey
- Species Aster bupleurifolius hort.monsp. ex Nees accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster bupleuroides J.Forbes
- Species Aster burchellii Hook.f. accepted as Commidendrum burchellii (Hook.f.) Benth. & Hook.f. ex Hemsl.
- Species Aster burgessii Britton
- Species Aster burkei (A.Gray) Howell accepted as Symphyotrichum foliaceum (Lindl. ex DC.) G.L.Nesom
- Species Aster burkei Harv. accepted as Felicia burkei (Harv.) L.Bolus
- Species Aster bustillosianus (J.Rémy) Kuntze accepted as Haplopappus glutinosus Cass.
- Species Aster butleri Rydb. accepted as Symphyotrichum subspicatum (Nees) G.L.Nesom
- Species Aster cabrerae Ariza accepted as Symphyotrichum graminifolium (Spreng.) G.L.Nesom
- Species Aster cabulicus Lindl. accepted as Aster albescens (DC.) Wall. ex Hand.-Mazz.
- Species Aster caesius (L.) Kuntze accepted as Solidago caesia L.
- Species Aster caespitosus E.Forst. ex J.Forbes
- Species Aster caespitosus Hort. ex Lindl. accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster caespitosus (Nutt.) Kuntze accepted as Stenotus acaulis (Nutt.) Nutt.
- Species Aster caffrorum Less. accepted as Microglossa caffrorum (Less.) Grau
- Species Aster calcareus (F.Muell. ex Benth.) F.Muell.
- Species Aster calderi B.Boivin accepted as Symphyotrichum puniceum var. puniceum (L.) Á.Löve & D.Löve
- Species Aster calendulaceus (Griseb.) Kuntze accepted as Noticastrum acuminatum (DC.) Cuatrec.
- Species Aster calendulifolius Loisel.
- Species Aster californicus (Nutt.) Kuntze accepted as Solidago velutina subsp. californica (Nutt.) Semple
- Species Aster californicus Less. accepted as Erigeron glaucus Ker Gawl.
- Species Aster calocephalus Malme
- Species Aster calvatus (Baker) Herter accepted as Noticastrum calvatum (Baker) Cuatrec.
- Species Aster campestris Nutt. accepted as Symphyotrichum campestre (Nutt.) G.L.Nesom
- Species Aster camporum Gardner accepted as Inulopsis camporum (Gardner) G.L.Nesom
- Species Aster camptilis E.S.Burgess
- Species Aster camptosorus Small accepted as Symphyotrichum shortii (Lindl.) G.L.Nesom
- Species Aster canadensis Kuntze
- Species Aster canadensis (L.) Krause
- Species Aster canadensis (L.) E.H.L.Krause accepted as Erigeron canadensis L.
- Species Aster canadensis (L.) Kuntze accepted as Solidago canadensis L.
- Species Aster canbyi (A.Gray) Vasey ex Rydb. accepted as Symphyotrichum foliaceum var. canbyi (A.Gray) G.L.Nesom
- Species Aster canbyi Vasey ex A.Gray accepted as Symphyotrichum foliaceum (Lindl. ex DC.) G.L.Nesom
- Species Aster canbyi Kuntze accepted as Pyrrocoma integrifolia (Porter ex A.Gray) Greene
- Species Aster candelabrum Vaniot
- Species Aster candollei Harv. accepted as Felicia cymbalarioides (DC.) Grau
- Species Aster candollei Kuntze accepted as Solidago spathulata DC.
- Species Aster canescens Pursh accepted as Dieteria canescens (Pursh) Nutt.
- Species Aster canescens (Nees) Fisjun accepted as Kalimeris altaica (Willd.) Nees ex Fisch.Mey. & Avé-Lall.
- Species Aster cantonensis (Lour.) Courtois accepted as Aster indicus L.
- Species Aster canus Waldst., Kit. & Bujor.apud Borza
- Species Aster canus Waldst. & Kit. accepted as Galatella cana (Waldst. & Kit.) Nees
- Species Aster capensis Less. accepted as Felicia aethiopica (Burm.f.) Bolus & Wolley-Dod ex Adamson & T.M.Salt
- Species Aster capillaceus E.S.Burgess accepted as Symphyotrichum oolentangiense (Riddell) G.L.Nesom
- Species Aster capillaris E.S.Burgess
- Species Aster capusi Franch.
- Species Aster caricifolius Kunth
- Species Aster carmesinus E.S.Burgess ex Britton & A.Brown
- Species Aster carmesinus E.S.Burgess accepted as Eurybia divaricata (L.) G.L.Nesom
- Species Aster carnerosanus S.Watson accepted as Symphyotrichum carnerosanum (S.Watson) G.L.Nesom
- Species Aster carneus Torr. & A.Gray accepted as Symphyotrichum puniceum (L.) Á.Löve & D.Löve
- Species Aster carneus Nees accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster carneus Baker accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster carnosus A.Gray
- Species Aster carnosus Gilib. accepted as Tripolium pannonicum subsp. tripolium (L.) Greuter
- Species Aster carnosus (A.Gray) A.Gray ex Hemsl. accepted as Machaeranthera carnosa (A.Gray) G.L.Nesom
- Species Aster carolinianus Walter accepted as Ampelaster carolinianus (Walter) G.L.Nesom
- Species Aster carterianus J.K.Henry
- Species Aster carthamodes (Hook.) Kuntze accepted as Pyrrocoma carthamoides var. carthamoides Hook.
- Species Aster caryophyllus Steud. accepted as Olearia argophylla (Labill.) F.Muell. ex Benth.
- Species Aster cassiarabicus Maund.
- Species Aster cassiniae F.Muell. accepted as Olearia cassiniae (F.Muell.) Benth.
- Species Aster castaneus E.S.Burgess accepted as Eurybia divaricata (L.) G.L.Nesom
- Species Aster catalaunicus Willk. & Costa accepted as Aster willkommii subsp. catalaunicus (Willk. & Costa) A.Bolòs
- Species Aster caubulicus Hook. accepted as Aster albescens (DC.) Wall. ex Hand.-Mazz.
- Species Aster caucasicus Willd. accepted as Kemulariella caucasica (Willd.) Tamansch.
- Species Aster cavaleriei Vaniot & H.Lév.
- Species Aster celmisia F.Muell. accepted as Celmisia longifolia Cass.
- Species Aster celtibericus Pau
- Species Aster centaurodes (DC.) Kuntze accepted as Pteronia centauroides DC.
- Species Aster cerberoanus (J.Rémy) Kuntze accepted as Haplopappus cerberoanus (J.Rémy) Reiche
- Species Aster ceruminensis (Durand & Hilg.) Kuntze
- Species Aster ceruminensis (A.Gray) Kuntze
- Species Aster chamaedrifolius Lam. ex DC. accepted as Printzia polifolia (L.) Hutch.
- Species Aster chamissonis Torr.
- Species Aster chamissonis A.Gray accepted as Symphyotrichum chilense (Nees) G.L.Nesom
- Species Aster chaneti H.Lév. & Vaniot
- Species Aster chanetii H.Lév. & Vaniot
- Species Aster chapmanii Torr. & A.Gray accepted as Symphyotrichum chapmanii (Torr. & A.Gray) Semple & Brouillet
- Species Aster charieis Less. accepted as Felicia ovata (Thunb.) Compton
- Species Aster chasei G.N.Jones
- Species Aster chebataroffii Herter accepted as Noticastrum chebataroffii (Herter) Zardini
- Species Aster chelonicus Lunell
- Species Aster chezuensis (Kitam.) Nakai accepted as Heteropappus chejuensis Kitam.
- Species Aster chilensis Nees accepted as Symphyotrichum chilense (Nees) G.L.Nesom
- Species Aster chimanimaniensis W.Lippert
- Species Aster chinensis L. accepted as Callistephus chinensis (L.) Nees
- Species Aster chingshuiensis Y.C.Liu & C.H.Ou
- Species Aster chlorolepis E.S.Burgess accepted as Eurybia chlorolepis (E.S.Burgess) G.L.Nesom
- Species Aster choralis E.S.Steele
- Species Aster chrysanthemifolius Hort. ex Steud. accepted as Felicia filifolia (Vent.) Burtt Davy
- Species Aster chrysanthemifolius (DC.) Kuntze accepted as Haplopappus chrysanthemifolius (Less.) DC.
- Species Aster chrysanthemoides Willd. ex Spreng. accepted as Machaeranthera tanacetifolia (Kunth) Nees
- Species Aster chryseus Kuntze accepted as Grindelia prunelloides (Poepp. ex Less.) Adr.Bartoli & Tortosa
- Species Aster chrysocomifolius Hort. ex Steud. accepted as Nolletia chrysocomoides (Desf.) Cass.
- Species Aster chrysocomoides Desf. accepted as Nolletia chrysocomoides (Desf.) Cass.
- Species Aster chrysocomoides Turcz. ex DC. accepted as Aster alpinus L.
- Species Aster chrysogonii Sennen accepted as Symphyotrichum pilosum (Willd.) G.L.Nesom
- Species Aster chrysophyllus A.Cunn. ex DC. accepted as Olearia chrysophylla (DC.) Benth.
- Species Aster chrysothamnus Kuntze accepted as Ericameria arborescens (A.Gray) Greene
- Species Aster chusanensis Y.S.Lim, Hyun, Y.D.Kim & H.C.Shin
- Species Aster cichoriaceus (Greene) S.F.Blake accepted as Dieteria canescens var. aristata (Eastw.) D.R.Morgan & R.L.Hartm.
- Species Aster ciliaris Kuntze accepted as Solidago juncea Aiton
- Species Aster ciliaris Thunb. ex DC. accepted as Zyrphelis taxifolia (L.) Nees
- Species Aster ciliatus Walter
- Species Aster ciliatus (Nutt.) Kuntze accepted as Grindelia ciliata (Nutt.) Spreng.
- Species Aster ciliatus (Ledeb.) B.Fedtsch. accepted as Symphyotrichum ciliatum (Ledeb.) G.L.Nesom
- Species Aster ciliatus Nutt. accepted as Symphyotrichum pratense (Raf.) G.L.Nesom
- Species Aster ciliatus Muhl. ex Willd. accepted as Symphyotrichum ericoides var. ericoides (L.) G.L.Nesom
- Species Aster ciliolatus Lindl. accepted as Symphyotrichum ciliolatum (Lindl.) Á.Löve & D.Löve
- Species Aster ciliomarginatus Rydb.
- Species Aster ciliosus Kitam. accepted as Aster hayatae H.Lév. & Vaniot
- Species Aster ciliosus (Turcz.) Hand.-Mazz. accepted as Aster asa-grayi Makino
- Species Aster cinerarioides (DC.) Humbert
- Species Aster cinereus Korsh. accepted as Galatella villosa (L.) Rchb.f.
- Species Aster circularis E.S.Burgess
- Species Aster claviger E.S.Burgess accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster claytonii E.S.Burgess ex Britton & A.Brown
- Species Aster claytonii E.S.Burgess accepted as Eurybia divaricata (L.) G.L.Nesom
- Species Aster clivorum Lunell
- Species Aster coahuilensis S.F.Blake
- Species Aster coerulescens DC. accepted as Symphyotrichum praealtum var. praealtum (Poir.) G.L.Nesom
- Species Aster cognatus H.M.Hall accepted as Xylorhiza cognata (H.M.Hall) T.J.Watson
- Species Aster colchicus Albov ex Grossh.
- Species Aster colchicus Albov accepted as Kemulariella colchica (Albov) Tamamsch.
- Species Aster colensoi Kuntze
- Species Aster colensoi (Hook.f.) F.Muell. accepted as Olearia colensoi Hook.f.
- Species Aster collinsii Nutt. accepted as Sericocarpus tortifolius (Michx.) Nees
- Species Aster collinus Salisb. accepted as Aster amellus L.
- Species Aster coloradoensis A.Gray accepted as Xanthisma coloradoense (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster coloratus (Colenso) Kuntze accepted as Olearia rani (A.Cunn.) Druce
- Species Aster columbianus Piper accepted as Symphyotrichum ×columbianum (Piper) G.L.Nesom
- Species Aster commixtus (Nees) Kuntze accepted as Eurybia spectabilis (Sol. ex Aiton) G.L.Nesom
- Species Aster commutatus Kuntze accepted as Solidago odora subsp. chapmanii (A.Gray) Semple
- Species Aster commutatus (Torr. & A.Gray) A.Gray accepted as Symphyotrichum falcatum var. commutatum (Torr. & A.Gray) G.L.Nesom
- Species Aster comptonii W.Lippert
- Species Aster concinnus Salisb. accepted as Felicia fruticosa (L.) G.Nicholson
- Species Aster concinnus Colla accepted as Symphyotrichum novae-angliae (L.) G.L.Nesom
- Species Aster concinnus Willd. accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster concolor L. accepted as Symphyotrichum concolor (L.) G.L.Nesom
- Species Aster conduplicatus E.S.Burgess accepted as Symphyotrichum puniceum var. puniceum (L.) Á.Löve & D.Löve
- Species Aster confertiflorus (DC.) Kuntze accepted as Solidago simplex var. simplex
- Species Aster confertifolius Hilliard & B.L.Burtt
- Species Aster confertus Desf. accepted as Symphyotrichum puniceum (L.) Á.Löve & D.Löve
- Species Aster confertus Nees accepted as Symphyotrichum versicolor (Willd.) G.L.Nesom
- Species Aster confinis (A.Gray) Kuntze accepted as Solidago confinis A.Gray
- Species Aster confusus Harv. ex Harv. & Sond.
- Species Aster confusus Harv. accepted as Felicia hirsuta DC.
- Species Aster conocephalus (F.Muell.) F.Muell. accepted as Cratystylis conocephala (F.Muell.) S.Moore
- Species Aster consanguineus Ledeb. accepted as Erigeron komarovii Botsch.
- Species Aster conspicuus Less.
- Species Aster conspicuus Fisch. ex Turcz. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster conspicuus Lindl. accepted as Eurybia conspicua (Lindl.) G.L.Nesom
- Species Aster continuus Small accepted as Symphyotrichum patens var. patentissimum (Lindl. ex Lindl.) G.L.Nesom
- Species Aster conyza
- Species Aster conyzae Griess. accepted as Inula conyza (Griess.) DC.
- Species Aster conyzoides Willd. accepted as Sericocarpus conyzoides Nees
- Species Aster conyzoides Desf. accepted as Felicia hyssopifolia subsp. glabra (DC.) Grau
- Species Aster cooperi (A.Gray) Kuntze accepted as Ericameria cooperi (A.Gray) H.M.Hall
- Species Aster copelandii Greene
- Species Aster cordalenus L.F.Hend. accepted as Symphyotrichum eatonii (A.Gray) G.L.Nesom
- Species Aster cordifolius Muhl. ex Willd.
- Species Aster cordifolius Lam.
- Species Aster cordifolius Michx.
- Species Aster cordifolius L. accepted as Symphyotrichum cordifolium (L.) G.L.Nesom
- Species Aster cordineri A.Nelson accepted as Symphyotrichum falcatum var. commutatum (Torr. & A.Gray) G.L.Nesom
- Species Aster coriaceifolius H.Lév. & Vaniot accepted as Acilepis clivorum (Hance) H.Rob.
- Species Aster coriaceiformis H.Lév. & Vaniot accepted as Acilepis clivorum (Hance) H.Rob.
- Species Aster coriaceus Hort. ex DC. accepted as Felicia fruticosa (L.) G.Nicholson
- Species Aster coriaceus G.Forst. accepted as Celmisia coriacea (G.Forst.) Hook.f.
- Species Aster coridifolius Michx. ex Willd.
- Species Aster coridifolius Michx. accepted as Symphyotrichum dumosum var. dumosum (L.) G.L.Nesom
- Species Aster cornifolius Muhl. ex Willd. accepted as Doellingeria infirma (Michx.) Greene
- Species Aster cornuti Mill. ex Nees
- Species Aster cornuti Wendl. ex Nees accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster cornuti Mill. ex DC. accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster coronatus (Sch.Bip.) S.Y.Hu accepted as Kalimeris coronata Sch.Bip.
- Species Aster coronopifolia (Nutt.) N.E.Br. accepted as Machaeranthera tanacetifolia (Kunth) Nees
- Species Aster coronopifolius (A.Gray) Kuntze accepted as Isocoma coronopifolia (A.Gray) Greene
- Species Aster corrigiatus E.S.Burgess accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster corymbiformis Rydb.
- Species Aster corymbosus Moench accepted as Inula germanica L.
- Species Aster corymbosus Sol. ex Aiton accepted as Eurybia divaricata (L.) G.L.Nesom
- Species Aster corymbosus (Harv.) Fourc. accepted as Gymnostephium papposum G.L.Nesom
- Species Aster costei H.Lév. accepted as Aster asteroides subsp. costei (H.Lév.) Grierson
- Species Aster covillei (Greene) S.F.Blake ex M.Peck accepted as Eucephalus ledophyllus var. covillei (Greene) G.L.Nesom
- Species Aster crassifolius Klatt accepted as Diplostephium phylicoides (Kunth) Wedd.
- Species Aster crassulus Rydb. accepted as Symphyotrichum falcatum var. commutatum (Torr. & A.Gray) G.L.Nesom
- Species Aster crenatifolius Hand.-Mazz. accepted as Heteropappus crenatifolius (Hand.-Mazz.) Grierson
- Species Aster crenatus (Thunb.) Less. accepted as Mairia crenata (Thunb.) Nees
- Species Aster crenifolius (Fernald) Fabris ex J.S.Pringle
- Species Aster crenifolius (Fernald) G.L.Nesom
- Species Aster crenifolius (Fernald) Cronquist accepted as Symphyotrichum novi-belgii var. crenifolium (Fernald) Labrecque & Brouillet
- Species Aster crenulatus Hutch. accepted as Felicia boehmii O.Hoffm.
- Species Aster creticus (Gand.) Rech.f. accepted as Galatella cretica Gand.
- Species Aster crinifer (Hook.f.) F.Muell. accepted as Pleurophyllum criniferum Hook.f.
- Species Aster criniler (Hook.f.) F.Muell.
- Species Aster crinitus L. accepted as Athrixia crinita (L.) Druce
- Species Aster crinitus Thunb. accepted as Athrixia capensis Ker Gawl.
- Species Aster crispus Forssk. accepted as Pulicaria undulata (L.) C.A.Mey.
- Species Aster crithmifolius (L.) Cav. accepted as Inula crithmifolia L.
- Species Aster crocatus Bertol. accepted as Lycoseris crocata (Bertol.) S.F.Blake
- Species Aster croceus (A.Gray) Kuntze accepted as Pyrrocoma crocea (A.Gray) Greene
- Species Aster crocifolius Kunth accepted as Oritrophium crocifolium (Kunth) Cuatrec.
- Species Aster culminis A.Nelson accepted as Aster alpinus subsp. vierhapperi Onno
- Species Aster cuneatus A.Cunn. ex Steud. accepted as Olearia stellulata (Labill.) DC.
- Species Aster cuneatus (A.Gray) Kuntze accepted as Ericameria cuneata (A.Gray) McClatchie
- Species Aster cuneifolius (Nutt.) Kuntze accepted as Haplopappus scrobiculatus (Nees) DC.
- Species Aster cunninghamii (Hook.f.) F.Muell. accepted as Olearia rani (A.Cunn.) Druce
- Species Aster curtisii Torr. & A.Gray accepted as Symphyotrichum retroflexum G.L.Nesom
- Species Aster curtus Cronquist accepted as Sericocarpus rigidus Lindl.
- Species Aster curvatus Vaniot
- Species Aster curvescens E.S.Burgess
- Species Aster curvescens E.S.Burgess ex Britton & A.Brown
- Species Aster cusickii A.Gray accepted as Symphyotrichum cusickii (A.Gray) G.L.Nesom
- Species Aster cyaneus Hoffm. accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster cyanodiscus F.Muell. accepted as Olearia ramosissima (DC.) Benth.
- Species Aster cydoniifolius A.Cunn. ex DC. accepted as Olearia cydoniifolia (DC.) Benth.
- Species Aster cylleneus (Boiss. & Orph.) Halácsy accepted as Aster alpinus subsp. cylleneus (Boiss. & Orph.) Hayek
- Species Aster cylleneus Orphan. ex Nyman accepted as Aster alpinus L.
- Species Aster cymbalariae Ait.
- Species Aster cymbalariae Aiton accepted as Felicia cymbalariae subsp. cymbalariae (Aiton) Bolus & Wolley-Dod ex Adamson & T.M.Salter
- Species Aster cymbalariodes (DC.) Kuntze accepted as Felicia cymbalarioides (DC.) Grau
- Species Aster dahuricus (DC.) Benth. ex Baker accepted as Galatella dahurica DC.
- Species Aster dahuricus (DC.) B.Fedtsch. accepted as Galatella dahurica DC.
- Species Aster daltonis F.Muell. accepted as Celmisia glandulosa Hook.f.
- Species Aster debilis Bojer ex DC. accepted as Athrixia debilis DC.
- Species Aster decaphyllus E.S.Burgess
- Species Aster decemflora Nutt. accepted as Solidago radula Nutt.
- Species Aster decemflorus Kuntze accepted as Solidago radula Nutt.
- Species Aster decorus Desf. ex DC. accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster decumbens (Schltr.) G.L.Nesom
- Species Aster decumbens Baker accepted as Noticastrum decumbens (Baker) Cuatrec.
- Species Aster decurrens Moench accepted as Inula bifrons L.
- Species Aster decurrens (DC.) F.Muell. accepted as Eurybia decurrens DC.
- Species Aster decurrens A.Cunn. ex DC. accepted as Olearia decurrens (DC.) Benth.
- Species Aster deflexus Tausch
- Species Aster deflexus Moench accepted as Galatella sedifolia (L.) Greuter
- Species Aster defoliatus Parish accepted as Symphyotrichum defoliatum (Parish) G.L.Nesom
- Species Aster delavayi Franch. accepted as Aster diplostephioides (DC.) Benth. ex C.B.Clarke
- Species Aster delectabilis H.M.Hall accepted as Symphyotrichum spathulatum var. spathulatum (Lindl.) G.L.Nesom
- Species Aster delectus Piper
- Species Aster demissus J.Forbes
- Species Aster demissus Harv.
- Species Aster densatus E.S.Burgess
- Species Aster densiflorus (Hook.f.) F.Muell. accepted as Celmisia densiflora Hook.f.
- Species Aster densifolius (J.Rémy) Kuntze accepted as Haplopappus scrobiculatus (Nees) DC.
- Species Aster dentatus Andrews accepted as Olearia tomentosa (Wendl.) DC.
- Species Aster dentatus Thunb. accepted as Felicia australis (Alston) E.Phillips
- Species Aster denticulatus (Phil.) Kuntze accepted as Haplopappus cerberoanus (J.Rémy) Reiche
- Species Aster denudatus Nutt. accepted as Symphyotrichum ascendens (Lindl.) G.L.Nesom
- Species Aster depauperatus Fernald accepted as Symphyotrichum depauperatum (Fernald) G.L.Nesom
- Species Aster depauperatus H.Lév. & Vaniot accepted as Aster uchiyamae Nakai
- Species Aster depressus (A.Gray) Kuntze accepted as Chrysothamnus depressus Nutt.
- Species Aster depressus Kit. accepted as Tripolium pannonicum subsp. tripolium (L.) Greuter
- Species Aster deserticola J.F.Macbr. accepted as Symphyotrichum defoliatum (Parish) G.L.Nesom
- Species Aster desertorum Tchertk. accepted as Galatella sedifolia subsp. dracunculoides (Lam.) Greuter
- Species Aster diabolicus Piper accepted as Symphyotrichum foliaceum var. parryi (D.C.Eaton) G.L.Nesom
- Species Aster dichotomus Elliott accepted as Oclemena reticulata (Pursh) G.L.Nesom
- Species Aster dieteria Kuntze accepted as Xanthisma gracile (Nutt.) D.R.Morgan & R.L.Hartm.
- Species Aster diffusus Dryand.
- Species Aster diffusus Aiton accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster dimorphophyllus Franch. & Sav.
- Species Aster diplopappus (J.Rémy) Kuntze accepted as Haplopappus diplopappus J.Rémy
- Species Aster diplostephioides (DC.) Benth. ex C.B.Clarke
- Species Aster diplostephioides Benth. & Hook.f.
- Species Aster discoideus Boiss. & Reut. accepted as Aster willkommii subsp. discoideus (Willk.) A.Bolòs
- Species Aster discoideus Sond. accepted as Chrysocoma ciliata L.
- Species Aster discoideus Elliott accepted as Brintonia discoidea (Elliott) Greene
- Species Aster discoideus Sond. ex Harv. & Sand. accepted as Chrysocoma ciliata L.
- Species Aster distichophyllus Greene
- Species Aster distortus Turcz. ex Avé-Lall. accepted as Kalimeris altaica (Willd.) Nees ex Fisch.Mey. & Avé-Lall.
- Species Aster divaricatus Lam. accepted as Oclemena acuminata (Michx.) Greene
- Species Aster divaricatus Spreng.
- Species Aster divaricatus Nutt.
- Species Aster divaricatus Raf. ex DC.
- Species Aster divaricatus (M.Bieb.) Schmalh. accepted as Galatella divaricata (Fisch. ex M.Bieb.) Novopokr.
- Species Aster divaricatus L. accepted as Eurybia divaricata (L.) G.L.Nesom
- Species Aster divaricatus Baker accepted as Aster squamatus (Spreng.) Hieron.
- Species Aster divaricatus (Nutt.) Kuntze accepted as Croptilon divaricatum (Nutt.) Raf.
- Species Aster divaricatus (Nutt.) Torr. & A.Gray accepted as Symphyotrichum subulatum var. ligulatum (Shinners) S.D.Sundb.
- Species Aster divergens Dryand.
- Species Aster divergens Dryand. ex Aiton accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster diversifolius Spreng.
- Species Aster diversifolius Michx. accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster doellianus (Phil.) Kuntze accepted as Haplopappus rigidus Phil.
- Species Aster dolichophyllus Y.Ling
- Species Aster dolichopodus Y.Ling
- Species Aster donii E.Forst. ex J.Forbes
- Species Aster doronicifolius H.Lév.
- Species Aster douglasii Lindl. accepted as Symphyotrichum subspicatum (Nees) G.L.Nesom
- Species Aster douglasii D.C.Eaton accepted as Symphyotrichum foliaceum (Lindl. ex DC.) G.L.Nesom
- Species Aster dracunculoides Besser
- Species Aster dracunculoides Willd. accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster dracunculoides Lam. accepted as Galatella sedifolia subsp. dracunculoides (Lam.) Greuter
- Species Aster dregei (DC.) Harv. accepted as Felicia dregei DC.
- Species Aster drummondii Lindl. ex Hook. accepted as Symphyotrichum drummondii (Lindl.) G.L.Nesom
- Species Aster drummondii Lindl. accepted as Symphyotrichum drummondii (Lindl.) G.L.Nesom
- Species Aster dubius E.H.L.Krause
- Species Aster dubius (Thunb.) Onno ex Kitam. accepted as Erigeron thunbergii A.Gray
- Species Aster dubius (Thunb.) Onno accepted as Erigeron thunbergii A.Gray
- Species Aster dubius (Thunb.) Hultén accepted as Erigeron thunbergii A.Gray
- Species Aster dumosus Nees
- Species Aster dumosus Hoffm.
- Species Aster dumosus DC.
- Species Aster dumosus L. accepted as Symphyotrichum dumosum (L.) G.L.Nesom
- Species Aster durandii Nutt. ex Durand accepted as Symphyotrichum defoliatum (Parish) G.L.Nesom
- Species Aster durandii Kuntze accepted as Ericameria teretifolia (Durand & Hilg.) Jeps.
- Species Aster durbrowi Eastw.
- Species Aster durbrowii Eastw.
- Species Aster durus Lunell accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster dysentericus (L.) Scop. accepted as Pulicaria dysenterica (L.) Bernh.
- Species Aster eatonii (A.Gray) Howell accepted as Symphyotrichum eatonii (A.Gray) G.L.Nesom
- Species Aster ebeneus E.S.Burgess
- Species Aster echinatus (Thunb.) Less. accepted as Felicia echinata (Thunb.) Nees
- Species Aster ecklonis Less. accepted as Felicia aethiopica subsp. ecklonis (Less.) Grau
- Species Aster edwardii Kuntze accepted as Ericameria nauseosa var. juncea (Greene) G.L.Nesom & G.I.Baird
- Species Aster ehrenbergii Sch.Bip.
- Species Aster elaeagnifolius A.Cunn. ex DC. accepted as Olearia furfuracea (A.Rich.) Hook.f.
- Species Aster elaeagnius E.S.Burgess
- Species Aster elaeophilus A.Cunn.
- Species Aster elaeophilus A.Cunn. ex DC. accepted as Olearia heterophila
- Species Aster elaeophilus (DC.) F.Muell. accepted as Olearia heterophila
- Species Aster elatus (Greene) Cronquist accepted as Oreostemma elatum (Greene) Greene
- Species Aster elatus Bertero ex Steud. accepted as Eurybia divaricata (L.) G.L.Nesom
- Species Aster elegans hort.par. ex A.Gray
- Species Aster elegans Hook.f. & Thomson ex C.B.Clarke accepted as Aster neoelegans Grierson
- Species Aster elegans Nees accepted as Aster amellus L.
- Species Aster elegans Willd. accepted as Eurybia spectabilis (Sol. ex Aiton) G.L.Nesom
- Species Aster elegans (Nutt.) Torr. & A.Gray accepted as Eucephalus elegans Nutt.
- Species Aster elegantulus A.E.Porsild accepted as Symphyotrichum falcatum var. falcatum (Lindl.) G.L.Nesom
- Species Aster eliasii A.Nelson accepted as Eurybia radulina (A.Gray) G.L.Nesom
- Species Aster elliottii Torr. & A.Gray accepted as Symphyotrichum elliottii (Torr. & A.Gray) G.L.Nesom
- Species Aster ellipticus A.Cunn. ex DC. accepted as Olearia elliptica DC.
- Species Aster elmeri Piper accepted as Aster okanoganus Piper
- Species Aster elmeri Greene accepted as Erigeron elmeri (Greene) Greene
- Species Aster elodes Torr. & A.Gray accepted as Symphyotrichum novi-belgii var. elodes (Torr. & A.Gray) G.L.Nesom
- Species Aster elongatus Thunb. accepted as Felicia elongata (Thunb.) O.Hoffm. ex O.Hoffm.
- Species Aster elongatus (Nutt.) Kuntze accepted as Solidago elongata Nutt.
- Species Aster elongifolius A.Cunn. accepted as Olearia furfuracea (A.Rich.) Hook.f.
- Species Aster eminens Nees
- Species Aster eminens Lindl.
- Species Aster eminens Willd. accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster engelmannii (D.C.Eaton) A.Gray accepted as Eucephalus engelmannii (D.C.Eaton) Greene
- Species Aster ensatus Greene
- Species Aster ensifer Boss.
- Species Aster ensifolius Scop. accepted as Inula ensifolia L.
- Species Aster eradiatus (A.Gray) Frye & Rigg accepted as Dieteria canescens var. shastensis (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster erectus E.S.Burgess
- Species Aster erectus (J.Rémy) Kuntze accepted as Noticastrum erectum J.Rémy
- Species Aster erectus (J.Rémy) J.Forbes
- Species Aster erectus (Remy) Reiche accepted as Noticastrum erectum J.Rémy
- Species Aster eremophila Bunge accepted as Aster limonifolius (Less.) B.Fedtsch.
- Species Aster eremophilus Bunge accepted as Aster limonifolius (Less.) B.Fedtsch.
- Species Aster ericifolius Rothr. accepted as Chaetopappa ericoides (Torr.) G.L.Nesom
- Species Aster ericifolius Forssk. accepted as Macowania ericifolia (Forssk.) B.L.Burtt & Grau
- Species Aster ericina Kuntze accepted as Ericameria ericoides (Less.) Nutt. ex Jeps.
- Species Aster ericoides Lam.
- Species Aster ericoides L. accepted as Symphyotrichum ericoides (L.) G.L.Nesom
- Species Aster eriensis E.S.Burgess
- Species Aster erigeroides Hook. & Arn. accepted as Erigeron fernandezius (Colla) Harling
- Species Aster erigeroides (DC.) Harv. accepted as Felicia erigeroides DC.
- Species Aster erigeron Krause
- Species Aster erigeron E.H.L.Krause accepted as Erigeron acer L.
- Species Aster erigeronoides Colla
- Species Aster eriocaulis Rydb.
- Species Aster eriophorus (J.Rémy) Kuntze accepted as Noticastrum eriophorum J.Rémy
- Species Aster eriophorus (J.Rémy) Reiche accepted as Noticastrum eriophorum J.Rémy
- Species Aster erubescens Spreng.
- Species Aster erubescens Sieber ex Benth. accepted as Olearia myrsinoides (Labill.) F.Muell. ex Benth.
- Species Aster erucifolius (Thell.) W.Lippert
- Species Aster eryngiifolius Torr. & A.Gray accepted as Eurybia eryngiifolia (Torr. & A.Gray) G.L.Nesom
- Species Aster espenbergensis Nees accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster esquirolii H.Lév. accepted as Picris hieracioides subsp. japonica (Thunb.) Krylov
- Species Aster eulae Shinners accepted as Symphyotrichum eulae (Shinners) G.L.Nesom
- Species Aster euthamia Kuntze accepted as Euthamia caroliniana (L.) Greene ex Porter & Britton
- Species Aster exacutus E.S.Burgess
- Species Aster exasperatus Link accepted as Olearia ramulosa (Labill.) Benth.
- Species Aster excavatus E.S.Burgess accepted as Eurybia divaricata (L.) G.L.Nesom
- Species Aster excelsior E.S.Burgess
- Species Aster excorticatus (Buchanan) Kuntze accepted as Olearia excorticata Buchanan
- Species Aster exiguifolius F.Muell.
- Species Aster exiguus (Fernald) Rydb. accepted as Symphyotrichum ericoides var. ericoides (L.) G.L.Nesom
- Species Aster exilifolius F.Muell. accepted as Olearia brachyphylla (F.Muell. ex Sond.) N.A.Wakef.
- Species Aster exilis Elliott accepted as Symphyotrichum subulatum var. ligulatum (Shinners) S.D.Sundb.
- Species Aster expansus Nees accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster exscapus Richardson accepted as Townsendia exscapa (Richardson) Porter
- Species Aster exsul Greene
- Species Aster exsul Lindl. accepted as Olearia rudis (Benth.) F.Muell. ex Benth.
- Species Aster exul Lindl. accepted as Olearia rudis (Benth.) F.Muell. ex Benth.
- Species Aster eylesii (S.Moore) Milne-Redh. accepted as Felicia welwitschii (Hiern) Grau
- Species Aster falcatus Lindl. accepted as Symphyotrichum falcatum (Lindl. ex Lindl.) G.L.Nesom
- Species Aster falcatus Lindl. ex DC. accepted as Symphyotrichum falcatum (Lindl. ex Lindl.) G.L.Nesom
- Species Aster falcatus D.C.Eaton accepted as Symphyotrichum ascendens (Lindl.) G.L.Nesom
- Species Aster falcidens E.S.Burgess accepted as Symphyotrichum laeve var. laeve (L.) Á.Löve & D.Löve
- Species Aster falcifolius Hand.-Mazz.
- Species Aster falconeri (C.B.Clarke) Hutch.
- Species Aster fallax Tamamsch. accepted as Aster alpinus L.
- Species Aster famatinensis Hieron.
- Species Aster fanjingshanicus Y.L.Chen & D.J.Liu
- Species Aster farreri W.W.Sm. & Jeffrey
- Species Aster fascicularis E.Mey. ex DC. accepted as Felicia muricata (Thunb.) Nees
- Species Aster fastigiatus Fisch.
- Species Aster fastigiatus Ledeb. accepted as Galatella hauptii (Ledeb.) Lindl. ex Lindl.
- Species Aster fauriei H.Lév. & Vaniot accepted as Aster tataricus L.f.
- Species Aster fauriei Tamamsch. accepted as Aster tataricus L.f.
- Species Aster faxonii Porter accepted as Symphyotrichum pilosum (Willd.) G.L.Nesom
- Species Aster feddei H.Lév. & Vaniot accepted as Aster spathulifolius Maxim.
- Species Aster fendleri A.Gray accepted as Symphyotrichum fendleri (A.Gray) G.L.Nesom
- Species Aster ferdinandi Kuntze accepted as Olearia muricata (Steetz) Benth.
- Species Aster ferox E.S.Burgess
- Species Aster ferresii (F.Muell.) F.Muell.
- Species Aster ferrugineus accepted as Olearia tomentosa (Wendl.) DC.
- Species Aster ferrugineus Edgew. accepted as Aster albescens (DC.) Wall. ex Hand.-Mazz.
- Species Aster ficoidea Harv.
- Species Aster ficoideus (DC.) Harv. accepted as Poecilolepis ficoidea (DC.) Grau
- Species Aster fiebrigii Hieron. accepted as Noticastrum marginatum (Kunth) Cuatrec.
- Species Aster filaginifolius Hook. & Arn. accepted as Corethrogyne filaginifolia (Hook. & Arn.) Nutt.
- Species Aster filifolius Willd. ex Nees accepted as Felicia muricata (Thunb.) Nees
- Species Aster filifolius Vent. accepted as Felicia filifolia subsp. filifolia (Vent.) Burtt Davy
- Species Aster filiformis Steud. accepted as Felicia muricata (Thunb.) Nees
- Species Aster filiformis Eckl. ex DC. accepted as Zyrphelis taxifolia (L.) Nees
- Species Aster filipes J.Q.Fu
- Species Aster fimbriatus E.S.Burgess
- Species Aster finkii Rydb. accepted as Symphyotrichum ×finkii (Rydb.) G.L.Nesom
- Species Aster firmus Nees accepted as Symphyotrichum firmum (Nees) G.L.Nesom
- Species Aster fischeri E.Forst. ex J.Forbes
- Species Aster fischeri Kuntze accepted as Eurybia divaricata (L.) G.L.Nesom
- Species Aster fischerianus DC.
- Species Aster fistulosus (Mill.) Kuntze accepted as Solidago fistulosa Mill.
- Species Aster flabellum Vaniot accepted as Aster fastigiatus Fisch.
- Species Aster flaccidus Bunge
- Species Aster flavovirens (Chapm.) Kuntze accepted as Solidago stricta subsp. stricta
- Species Aster flaxuosus
- Species Aster flexicaulis Raf. accepted as Aster subulatus Michx.
- Species Aster flexilis E.S.Burgess accepted as Eurybia divaricata (L.) G.L.Nesom
- Species Aster flexuosus (Royle ex DC.) Kuntze accepted as Aster thomsonii C.B.Clarke
- Species Aster flexuosus Nutt. accepted as Symphyotrichum tenuifolium (L.) G.L.Nesom
- Species Aster flexuosus Fisch. accepted as Aster fischerianus DC.
- Species Aster floribundus Nutt.
- Species Aster floribundus Willd. accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster florulentus F.Muell. accepted as Olearia floribunda (Hook.f.) Benth.
- Species Aster fluminensis Vell.
- Species Aster fluvialis Osterh. accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster foliaceus Lindl. ex DC. accepted as Symphyotrichum foliaceum (Lindl. ex DC.) G.L.Nesom
- Species Aster foliolosus Elliott accepted as Symphyotrichum dumosum (L.) G.L.Nesom
- Species Aster foliolosus Dryand. ex Aiton accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster foliosus (DC.) Kuntze accepted as Haplopappus foliosus DC.
- Species Aster foliosus Pers. accepted as Symphyotrichum dumosum (L.) G.L.Nesom
- Species Aster fontinalis Alexander ex Small
- Species Aster fontinalis Alexander accepted as Symphyotrichum fontinale (Alexander) G.L.Nesom
- Species Aster fordii Hemsl.
- Species Aster formosanus Hayata
- Species Aster formosissimus Heynh. ex H.Vilm.
- Species Aster formosissimus Lémon
- Species Aster formosissimus Hort. ex Heynh.
- Species Aster formosus Kuntze accepted as Lorandersonia pulchella (A.Gray) Urbatsch, R.P.Roberts & Neubig
- Species Aster forrestii Stapf accepted as Aster souliei Franch.
- Species Aster forsteri borr. ex J.Forbes
- Species Aster forsteri (Hook.f.) F.Muell. accepted as Olearia paniculata Druce
- Species Aster forsteri (Hook.f.) Kuntze accepted as Olearia paniculata Druce
- Species Aster forwoodii S.Watson accepted as Eurybia conspicua (Lindl.) G.L.Nesom
- Species Aster fragilis Elliott
- Species Aster fragilis Lindl.
- Species Aster fragilis Jacq. ex Steud.
- Species Aster fragilis Schloss. & Vuk.
- Species Aster fragilis Nees
- Species Aster fragilis Willd. accepted as Symphyotrichum racemosum (Elliott) G.L.Nesom
- Species Aster fragrans E.S.Burgess
- Species Aster fragrans Burgess.
- Species Aster franchetianus H.Lév. accepted as Kalimeris integrifolia Turcz. ex DC.
- Species Aster franklinianus Rydb. accepted as Symphyotrichum boreale (Torr. & A.Gray) Á.Löve & D.Löve
- Species Aster fremontii (Torr. & A.Gray) A.Gray accepted as Symphyotrichum spathulatum var. spathulatum (Lindl.) G.L.Nesom
- Species Aster frikartii Silva Tar. & C.K.Schneid.
- Species Aster frondeus (A.Gray) Greene accepted as Symphyotrichum foliaceum var. parryi (D.C.Eaton) G.L.Nesom
- Species Aster frondosus (Nutt.) Torr. & A.Gray accepted as Symphyotrichum frondosum (Nutt.) G.L.Nesom
- Species Aster frostii F.Muell.
- Species Aster frutescens S.Watson accepted as Xylorhiza frutescens (S.Watson) Greene
- Species Aster frutetorum Wimmer.
- Species Aster frutetorum Wimm. ex Nyman accepted as Symphyotrichum ×salignum (Willd.) G.L.Nesom
- Species Aster fruticosus L. accepted as Felicia fruticosa (L.) G.Nicholson
- Species Aster fruticulosus Burm.f.
- Species Aster fruticulosus Krebs ex DC.
- Species Aster fruticulosus Murr.
- Species Aster fruticulosus Sims
- Species Aster fruticulosus L. accepted as Felicia fruticosa (L.) G.Nicholson
- Species Aster fruticulosus Willd. accepted as Felicia fruticosa subsp. fruticosa (L.) G.Nicholson
- Species Aster fugax Brot. accepted as Galatella aragonensis (Asso) Nees
- Species Aster fulcratus Greene
- Species Aster fulgidulus Grierson
- Species Aster fulvidus (Archer) Kuntze accepted as Olearia fulvida Archer ex Kuntze
- Species Aster furcatus E.S.Burgess ex Britton & A.Brown
- Species Aster furcatus E.S.Burgess accepted as Eurybia furcata (E.S.Burgess) G.L.Nesom
- Species Aster furfuraceus A.Rich. accepted as Olearia furfuracea (A.Rich.) Hook.f.
- Species Aster furfuraceus A.Rich. & Lesson accepted as Olearia furfuracea (A.Rich.) Hook.f.
- Species Aster fusanensis H.Lév. & Vaniot accepted as Aster hispidus Thunb.
- Species Aster fuscescens Bureau & Franch.
- Species Aster gagei "Phil."
- Species Aster ganlun Kitam. accepted as Aster souliei Franch.
- Species Aster gardneri Baker
- Species Aster garibaldii Brügger accepted as Aster alpinus L.
- Species Aster gaspensis Vict. accepted as Symphyotrichum anticostense (Fernald) G.L.Nesom
- Species Aster gattingeri Alexander accepted as Eurybia paludosa (Sol. ex Aiton) G.L.Nesom
- Species Aster gattingeri Kuntze accepted as Solidago gattingeri
- Species Aster gayanus Kuntze
- Species Aster gayanus DC. accepted as Erigeron gilliesii (Hook. & Arn.) Cabrera
- Species Aster gebleri Besser ex DC. accepted as Kalimeris altaica (Willd.) Nees ex Fisch.Mey. & Avé-Lall.
- Species Aster gentryi Standl. accepted as Psilactis gentryi (Standl.) D.R.Morgan
- Species Aster georgianus Alexander ex Small
- Species Aster georgianus Alexander accepted as Symphyotrichum georgianum (Alexander) G.L.Nesom
- Species Aster gerlachii Hance
- Species Aster germanicus (L.) Cav. accepted as Inula germanica L.
- Species Aster geyeri (A.Gray) Howell accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster giganteus Hort. ex Vilm. accepted as Vernonia noveboracensis (L.) Michx.
- Species Aster giganteus (Hook.) Rydb. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster gilliesii Hook. & Arn. accepted as Erigeron gilliesii (Hook. & Arn.) Cabrera
- Species Aster giraldii Diels
- Species Aster glabellus Nees accepted as Symphyotrichum ericoides (L.) G.L.Nesom
- Species Aster glaber Mill.
- Species Aster glaber E.Mey. ex Nees accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster glabratus (Phil.) Kuntze accepted as Haplopappus glutinosus Cass.
- Species Aster glabratus (DC.) Korsh. accepted as Galatella tatarica (Less.) Novopokr.
- Species Aster glabratus (Greene) S.F.Blake ex M.Peck accepted as Eucephalus glabratus (Greene) Greene
- Species Aster glabratus (Lindl. ex DC.) B.Fedtsch. accepted as Galatella tatarica (Less.) Novopokr.
- Species Aster glabratus (Hoppe & Hornsch.) E.H.L.Krause accepted as Erigeron glabratus Hoppe & Hornsch. ex Bluff & Fingerh.
- Species Aster glabrifolius (DC.) Reiche accepted as Symphyotrichum glabrifolium (DC.) G.L.Nesom
- Species Aster glabriuscula (Nutt.) Torr. & A.Gray accepted as Xylorhiza glabriuscula Nutt.
- Species Aster glabriusculus (Nutt.) Torr. & A.Gray
- Species Aster glacialis Nutt. accepted as Erigeron glacialis (Nutt.) A.Nelson
- Species Aster glandulosus Labill.
- Species Aster glandulosus (Keissl.) Hand.-Mazz. accepted as Aster flaccidus Bunge
- Species Aster glarearum W.W.Sm. & Farrer
- Species Aster glastifolius Greene
- Species Aster glaucescens (A.Gray) S.F.Blake accepted as Eucephalus glaucescens (A.Gray) Greene
- Species Aster glaucescens Wender. ex Nees accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster glaucodes S.F.Blake accepted as Herrickia glauca (Nutt.) Brouillet
- Species Aster glaucophyllus (Piper) Frye & Rigg accepted as Eucephalus glaucescens (A.Gray) Greene
- Species Aster glaucus (Nutt.) Torr. & A.Gray accepted as Herrickia glauca (Nutt.) Brouillet
- Species Aster glaucus Nees accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster glaucus (Ker Gawl.) Pépin accepted as Erigeron glaucus Ker Gawl.
- Species Aster glehnii F.Schmidt
- Species Aster glomeratus Bernh. ex Nees
- Species Aster glomeratus (Michx.) Kuntze accepted as Solidago glomerata Michx.
- Species Aster glomeratus (Bernh. ex Nees) accepted as Eurybia schreberi (Nees) Nees
- Species Aster glossophyllus Piper accepted as Dieteria canescens var. canescens (Pursh) Nutt.
- Species Aster glutescens (Sond.) F.Muell. accepted as Olearia passerinoides subsp. glutescens (F.Muell. ex Sond.) D.A.Cooke
- Species Aster glutinosus (Less.) Kuntze accepted as Haplopappus glutinosus Cass.
- Species Aster glutinosus Roxb. accepted as Commidendrum rugosum (Aiton) DC.
- Species Aster glutinosus Cav. accepted as Grindelia glutinosa (Cav.) Mart.
- Species Aster gmelinii Tausch
- Species Aster gmelinii Ledeb. accepted as Senecio gmelinii
- Species Aster gnaphalioides (Baker) Hassl. accepted as Noticastrum gnaphalioides (Baker) Cuatrec.
- Species Aster gooddingii Onno accepted as Xylorhiza tortifolia var. tortifolia (Torr. & A.Gray) Greene
- Species Aster gormanii (Piper) S.F.Blake accepted as Eucephalus gormanii Piper
- Species Aster gossypiphorus Ling
- Species Aster gouldii C.E.C.Fisch. accepted as Heteropappus gouldii (C.E.C.Fisch.) Grierson
- Species Aster gracilentus Banks ex DC. accepted as Chrysopsis villosa (Pursh) Nutt. ex DC.
- Species Aster gracilentus Torr. & A.Gray accepted as Symphyotrichum laeve var. purpuratum (Nees) G.L.Nesom
- Species Aster gracilescens E.S.Burgess accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster gracilicaulis Y.Ling ex J.Q.Fu
- Species Aster gracilicaulis Y.Ling accepted as Aster gracilicaulis Y.Ling ex J.Q.Fu
- Species Aster gracilipes (Wiegand) Alexander ex Small accepted as Symphyotrichum dumosum var. gracilipes (Wiegand) G.L.Nesom
- Species Aster gracilipes (Wiegand) Alexander accepted as Symphyotrichum dumosum var. gracilipes (Wiegand) G.L.Nesom
- Species Aster gracilis Nutt. accepted as Eurybia compacta G.L.Nesom
- Species Aster gracillimus (Torr. & A.Gray) Kuntze accepted as Solidago stricta subsp. gracillima (Torr. & A.Gray) Semple
- Species Aster graminifolius (L.) Kuntze accepted as Euthamia graminifolia (L.) Nutt.
- Species Aster graminifolius Pursh accepted as Nidorella foetida (L.) DC.
- Species Aster grandiflorus Hoffm.
- Species Aster grandiflorus Nutt.
- Species Aster grandiflorus L. accepted as Symphyotrichum grandiflorum (L.) G.L.Nesom
- Species Aster granulosus E.S.Burgess
- Species Aster grauii W.Lippert accepted as Aster bakerianus Burtt Davy ex C.A.Sm.
- Species Aster graveolens Nutt. accepted as Symphyotrichum oblongifolium (Nutt.) G.L.Nesom
- Species Aster graveolens (Nutt.) Kuntze accepted as Ericameria nauseosa var. graveolens (Nutt.) Reveal & Schuyler
- Species Aster gravesii E.S.Burgess accepted as Symphyotrichum ×gravesii G.L.Nesom
- Species Aster gravis F.Muell. accepted as Olearia gravis (F.Muell.) F.Muell. ex Benth.
- Species Aster grayanus Kuntze
- Species Aster grayi Suksd. accepted as Symphyotrichum subspicatum (Nees) G.L.Nesom
- Species Aster greatae Parish accepted as Symphyotrichum greatae (Parish) G.L.Nesom
- Species Aster greenei (A.Gray) Kuntze accepted as Ericameria greenei (A.Gray) G.L.Nesom
- Species Aster greenii Nees ex Torr. & A.Gray
- Species Aster gremialis E.S.Burgess
- Species Aster grimmii B.Fedtsch.
- Species Aster grimmii (Regel & Schmalh.) B.Fedtsch. accepted as Linosyris grimmii Regel & Schmalh.
- Species Aster grindelioides (DC.) Kuntze accepted as Haplopappus grindelioides (Less.) DC.
- Species Aster grisebachii Britton accepted as Neja marginata (Griseb.) G.L.Nesom
- Species Aster griseolus Rydb.
- Species Aster griseus Kuntze accepted as Haplopappus canescens Reiche
- Species Aster griseus Greene accepted as Symphyotrichum ascendens (Lindl.) G.L.Nesom
- Species Aster grossedentatus Dinter accepted as Felicia brevifolia (DC.) Grau
- Species Aster guiradonis (A.Gray) Kuntze accepted as Solidago guiradonis A.Gray
- Species Aster gummiferus Hook.f. accepted as Commidendrum spurium (G.Forst.) DC.
- Species Aster gymnocephalus (Rupr.) B.Fedtsch. accepted as Brachyactis gymnocephala Rupr.
- Species Aster gymnocephalus (DC.) A.Gray accepted as Xanthisma blephariphyllum (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster gypsophila B.L.Turner
- Species Aster gypsophilus B.L.Turner accepted as Symphyotrichum gypsophilum (B.L.Turner) G.L.Nesom
- Species Aster haastii (Hook.f.) Kuntze accepted as Olearia haastii Hook.f.
- Species Aster haenkei Nees
- Species Aster hallii A.Gray accepted as Symphyotrichum hallii (A.Gray) G.L.Nesom
- Species Aster halophilus Greene
- Species Aster handelii Onno
- Species Aster haplopappus (J.Rémy) Kuntze accepted as Noticastrum sericeum (Less.) Less. ex Phil.
- Species Aster haplopappus (J.Rémy) Reiche accepted as Noticastrum sericeum (Less.) Less. ex Phil.
- Species Aster harbourii Kuntze accepted as Ericameria parryi var. parryi (A.Gray) G.L.Nesom & Baird
- Species Aster harrowianus Diels
- Species Aster hartwegii (A.Gray) Kuntze accepted as Isocoma hartwegii (A.Gray) Greene
- Species Aster harveyanus Kuntze
- Species Aster hashimotoi Kitam. accepted as Doellingeria sekimotoi (Makino) G.L.Nesom
- Species Aster hauptii Ledeb. accepted as Galatella hauptii (Ledeb.) Lindl. ex Lindl.
- Species Aster hauptii Turcz. ex DC. accepted as Galatella dahurica DC.
- Species Aster hayatae H.Lév. & Vaniot
- Species Aster haydenii Porter accepted as Oreostemma alpigenum var. haydenii (Porter) G.L.Nesom
- Species Aster hebecladus DC. accepted as Symphyotrichum ericoides var. ericoides (L.) G.L.Nesom
- Species Aster hectori (Hook.f.) Kuntze accepted as Olearia hectorii Hook.f.
- Species Aster hedinii Ostenf. accepted as Aster asteroides (DC.) Kuntze
- Species Aster heleius Urb.
- Species Aster helenae Merr.
- Species Aster helenium (L.) Scop. accepted as Inula helenium L.
- Species Aster heleophilus F.Muell. accepted as Olearia heleophila F.Muell.
- Species Aster heliopsis Grierson
- Species Aster hemisphericus Alexander accepted as Eurybia paludosa (Sol. ex Aiton) G.L.Nesom
- Species Aster hemsleyi Kuntze accepted as Solidago paniculata DC.
- Species Aster hendersonii Fernald accepted as Symphyotrichum hendersonii (Fernald) G.L.Nesom
- Species Aster henryi Hemsl.
- Species Aster hersilei Klatt
- Species Aster hersileoides C.K.Schneid.
- Species Aster herveya A.Gray
- Species Aster herveyi A.Gray, pro spec. & Uttal
- Species Aster herveyi A.Gray accepted as Eurybia ×herveyi (A.Gray) G.L.Nesom
- Species Aster hesperius A.Gray accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster heterochaeta Benth. ex C.B.Clarke accepted as Aster flaccidus Bunge
- Species Aster heterochaeta Benth. & Clarke accepted as Erigeron heterochaeta (Benth. ex Benth.) Botsch.
- Species Aster heterolepis Hand.-Mazz.
- Species Aster heteromallus Wender. accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster heterophyllus Schloss. & Vuk.
- Species Aster heterophyllus Nees
- Species Aster heterophyllus Willd. accepted as Symphyotrichum cordifolium (L.) G.L.Nesom
- Species Aster heterophyllus Thunb. accepted as Athrixia heterophylla subsp. heterophylla (Thunb.) Less.
- Species Aster heterophyllus (A.Gray) Kuntze accepted as Isocoma pluriflora (Torr. & A.Gray) Greene
- Species Aster heterotrichus Hara accepted as Erigeron thunbergii var. heterotrichus (Hara) Hara
- Species Aster heynei F.Muell. accepted as Olearia xerophila (F.Muell.) F.Muell. ex Benth.
- Species Aster hiemalis Nees accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster himalaicus C.B.Clarke
- Species Aster hintonii G.L.Nesom accepted as Symphyotrichum hintonii (G.L.Nesom) G.L.Nesom
- Species Aster hirsuticaulis Lindl.
- Species Aster hirsuticaulis Lindl. ex DC. accepted as Symphyotrichum lateriflorum var. lateriflorum (L.) Á.Löve & D.Löve
- Species Aster hirsutus Host accepted as Aster alpinus L.
- Species Aster hirsutus (Vent.) Harv. accepted as Felicia cymbalariae subsp. cymbalariae (Aiton) Bolus & Wolley-Dod ex Adamson & T.M.Salter
- Species Aster hirtellus (Phil.) Kuntze accepted as Haplopappus hirtellus Phil.
- Species Aster hirtellus Lindl. accepted as Symphyotrichum urophyllum (Lindl. ex Lindl.) G.L.Nesom
- Species Aster hirtellus Lindl. ex DC. accepted as Symphyotrichum urophyllum (Lindl. ex Lindl.) G.L.Nesom
- Species Aster hirtifolius S.F.Blake accepted as Chaetopappa ericoides (Torr.) G.L.Nesom
- Species Aster hirtus Thunb. accepted as Felicia hirta (Thunb.) Grau
- Species Aster hirtus Scop. accepted as Inula hirta L.
- Species Aster hirtus (DC.) Harv. accepted as Felicia aculeata Grau
- Species Aster hirtus K.Koch accepted as Aster amellus subsp. ibericus V.E.Avet.
- Species Aster hispanicus Coincy accepted as Aster alpinus L.
- Species Aster hispidulus (DC.) Kuntze accepted as Erigeron fasciculatus Colla
- Species Aster hispidus Thunb.
- Species Aster hispidus (Thunb.) Baker accepted as Aster bakerianus Burtt Davy ex C.A.Sm.
- Species Aster hispidus Thunb. accepted as Kalimeris hispida (Thunb.) Nees
- Species Aster hispidus Lam. accepted as Symphyotrichum puniceum (L.) Á.Löve & D.Löve
- Species Aster hispidus (Muhl. ex Willd.) Kuntze accepted as Solidago nemoralis Aiton
- Species Aster hispidus Murray accepted as Kalimeris hispida (Thunb.) Nees
- Species Aster hololachnus Ling
- Species Aster hololachnus Y.Ling ex Y.L.Chen, S.Yun Liang & K.Y.Pan
- Species Aster holophyllus Hemsl. accepted as Kalimeris integrifolia Turcz. ex DC.
- Species Aster holosericeus G.Forst. accepted as Celmisia holosericea (G.Forst.) Hook.f.
- Species Aster homochlamydeus Hand.-Mazz. accepted as Aster ageratoides var. grossedentatus (Franch. ex Diels) Kitam.
- Species Aster homolepis Chang ex Ling
- Species Aster homolepis F.Muell. accepted as Olearia homolepis (F.Muell.) Benth.
- Species Aster hookeri F.Muell.
- Species Aster hookeri J.Forbes
- Species Aster hookeri F.Muell. ex Benth. accepted as Olearia ramulosa (Labill.) Benth.
- Species Aster hookerianus (Torr. & A.Gray) Kuntze accepted as Haplopappus hookerianus (Torr. & A.Gray) A.Gray
- Species Aster hoorebekia (DC.) Kuntze accepted as Grindelia chiloensis (Cornel.) Cabrera
- Species Aster horizontalis Desf. accepted as Symphyotrichum lateriflorum var. horizontale (Desf.) G.L.Nesom
- Species Aster horridifolius H.Lév. & Vaniot accepted as Aster maackii Regel
- Species Aster horridus (Wooton & Standl.) G.L.Nesom
- Species Aster horridus (Wooton & Standl.) S.F.Blake accepted as Herrickia horrida Wooton & Standl.
- Species Aster houghtonii Kuntze
- Species Aster houghtonii (Torr. & A.Gray) Kuntze accepted as Solidago houghtonii Torr. & A.Gray ex Torr. & A.Gray
- Species Aster howardii (ex A.Gray) S.F.Blake
- Species Aster howardii (Parry ex A.Gray) Kuntze accepted as Ericameria parryi var. howardii (Parry ex A.Gray) G.L.Nesom & G.I.Baird
- Species Aster howellii Kuntze accepted as Columbiadoria hallii (A.Gray) G.L.Nesom
- Species Aster hualiensis S.S.Ying
- Species Aster huegelii F.Muell. accepted as Olearia ciliata (Benth.) F.Muell. ex Benth.
- Species Aster humilis Willd. accepted as Doellingeria infirma (Michx.) Greene
- Species Aster humilis Banks & Sol. ex Hook.f. accepted as Vittadinia australis A.Rich.
- Species Aster humistratus Gand.
- Species Aster hunanensis Hand.-Mazz.
- Species Aster hungaricus Poir. accepted as Symphyotrichum ×salignum (Willd.) G.L.Nesom
- Species Aster hunnemanni E.Forst. ex J.Forbes
- Species Aster hybernus E.Forst. ex J.Forbes
- Species Aster hybridus E.H.L.Krause
- Species Aster hydrabadensis Wall. accepted as Pulicaria wightiana (DC.) C.B.Clarke
- Species Aster hydrophilus Greene
- Species Aster hydrophilus Greene ex Wooton & Standl. accepted as Almutaster pauciflorus (Nutt.) Á.Löve & D.Löve
- Species Aster hygrophilus A.Cunn. ex DC. accepted as Olearia hygrophila (DC.) Benth.
- Species Aster hypoleucus Hand.-Mazz.
- Species Aster hyssopifolius Berger
- Species Aster hyssopifolius Cav. accepted as Galatella sedifolia (L.) Greuter
- Species Aster hyssopifolius L. accepted as Galatella sedifolia (L.) Greuter
- Species Aster hyssopifolius P.J.Bergius accepted as Felicia hyssopifolia subsp. hyssopifolia (P.J.Bergius) Nees
- Species Aster ianthinus E.S.Burgess
- Species Aster ianthinus E.S.Burgess ex Britton & A.Brown
- Species Aster ibericus Steven
- Species Aster ibericus Steven ex M.Bieb. accepted as Aster amellus subsp. ibericus V.E.Avet.
- Species Aster ignoratus Kunth & C.D.Bouché accepted as Aster albescens (DC.) Wall. ex Hand.-Mazz.
- Species Aster iinumae Kitam. ex Hara
- Species Aster iinumae Kitam. accepted as Aster iinumae Kitam. ex Hara
- Species Aster ilicifolius A.Cunn. ex DC. accepted as Olearia myrsinoides (Labill.) F.Muell. ex Benth.
- Species Aster ilicifolius (Hook.f.) F.Muell. accepted as Olearia ilicifolia Hook.f.
- Species Aster ilicifolius (J.Rémy) Kuntze accepted as Haplopappus mucronatus (Hook. & Arn.) Hook. & Arn. ex B.D.Jacks.
- Species Aster illinitus (Phil.) Kuntze accepted as Haplopappus velutinus J.Rémy
- Species Aster illitus (F.Muell.) F.Muell. accepted as Olearia elliptica DC.
- Species Aster illyricus (Murb.) K.Malý accepted as Galatella sedifolia subsp. illyrica (Murb.) Greuter
- Species Aster imbricatus Walp. accepted as Erigeron arenarioides (D.C.Eaton ex A.Gray) A.Gray ex Rydb.
- Species Aster imbricatus (DC.) Harv. accepted as Polyarrhena imbricata (DC.) Grau
- Species Aster imbricatus L. accepted as Polyarrhena reflexa subsp. reflexa (L.) Cass.
- Species Aster inaequalis Hill
- Species Aster incanopilosus Sheld
- Species Aster incanopilosus (Lindl.) E.Sheld. accepted as Symphyotrichum falcatum var. commutatum (Torr. & A.Gray) G.L.Nesom
- Species Aster incanus Lindl.
- Species Aster incanus (Lindl.) A.Gray accepted as Corethrogyne filaginifolia (Hook. & Arn.) Nutt.
- Species Aster incertus A.Nelson
- Species Aster incisa
- Species Aster incisus Fisch. accepted as Kalimeris incisa (Fisch.) DC.
- Species Aster inconspicuus Less. accepted as Symphyotrichum subulatum var. parviflorum (Nees) S.D.Sundb.
- Species Aster indamellus Grierson
- Species Aster indicus L.
- Species Aster indicus B.Heyne
- Species Aster infirmus Michx. accepted as Doellingeria infirma (Michx.) Greene
- Species Aster inflexus Desf.
- Species Aster inornatus Greene accepted as Dieteria canescens var. shastensis (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster insignis Kuntze
- Species Aster insignis (Hook.f.) F.Muell. accepted as Pachystegia insignis (Hook.f.) Cheeseman
- Species Aster insularis Makino accepted as Aster hispidus var. insularis (Makino) Mot.Ito
- Species Aster integrifolius (Turcz. ex DC.) Franch. accepted as Kalimeris integrifolia Turcz. ex DC.
- Species Aster integrifolius Nutt. accepted as Eurybia integrifolia (Nutt.) G.L.Nesom
- Species Aster interior (Wiegand) Jones
- Species Aster interior Wiegand accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster intermedius Turcz. ex DC. accepted as Aster flaccidus Bunge
- Species Aster intricatus (A.Gray) S.F.Blake accepted as Bigelowia intricata A.Gray
- Species Aster intybaceus Kunth & C.D.Bouché accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster inulifolius Boiss. & Balansa ex Boiss.
- Species Aster inulifolius Boiss. & Balansa accepted as Kemulariella caucasica (Willd.) Tamansch.
- Species Aster inuloides Fisch. ex DC.
- Species Aster inuloides D.Don accepted as Erigeron multiradiatus (Lindl. ex DC.) Benth. & Hook.f.
- Species Aster invenustus Greene accepted as Symphyotrichum chilense (Nees) G.L.Nesom
- Species Aster iodochrous (F.Muell.) F.Muell. accepted as Olearia iodochroa (F.Muell.) F.Muell. ex Benth.
- Species Aster ionoglossus Ling
- Species Aster ionoglossus Y.Ling ex Y.L.Chen, S.Yun Liang & K.Y.Pan
- Species Aster iostemma E.S.Burgess
- Species Aster ircutianus DC. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster italicus Hill
- Species Aster itsunboshi Kitam.
- Species Aster jacksonii Kuntze accepted as Solidago rigida subsp. glabrata (Braun) S.B.Heard & Semple
- Species Aster jacobaeus Lunell
- Species Aster jalapensis Fernald accepted as Symphyotrichum bullatum (Klatt) G.L.Nesom
- Species Aster jamaicensis (L.) Less. accepted as Erigeron jamaicensis L.
- Species Aster jamesii Kuntze
- Species Aster japonicus Less. ex Nees
- Species Aster japonicus (Miq.) Franch. & Sav. accepted as Aster miquelianus Hara
- Species Aster javanicus Garcin ex Burm.f. accepted as Kalimeris indica (L.) Sch.Bip.
- Species Aster jeffreyanus Diels
- Species Aster jemensis A.Nelson
- Species Aster jessicae Piper accepted as Symphyotrichum jessicae (Piper) G.L.Nesom
- Species Aster jessicae Suksd. accepted as Symphyotrichum jessicae (Piper) G.L.Nesom
- Species Aster jishouensis W.P.Li & S.X.Liu
- Species Aster johannensis Fernald accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster jonesiae Lamboy accepted as Eurybia jonesiae (Lamboy) G.L.Nesom
- Species Aster juchaihu Z.Y.Zhu & B.Q.Min
- Species Aster julianus E.S.Burgess
- Species Aster junceus Ait.
- Species Aster junceus Nees
- Species Aster junceus Aiton accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster junciformis Rydb. accepted as Symphyotrichum boreale (Torr. & A.Gray) Á.Löve & D.Löve
- Species Aster juniperinus E.S.Burgess accepted as Symphyotrichum pilosum var. pilosum (Willd.) G.L.Nesom
- Species Aster jussiei (Coss.) E.S.Burgess accepted as Eurybia macrophylla (L.) Cass.
- Species Aster kaempferi A.Gray accepted as Aster ovatus (Franch. & Sav.) Mot.Ito & Soejima
- Species Aster kansuensis Farrer
- Species Aster kantoensis Kitam.
- Species Aster karstenii Sch.Bip.
- Species Aster kawaguchii Kitam. accepted as Aster yunnanensis var. angustior Hand.-Mazz.
- Species Aster kayserianus Schur
- Species Aster kentuckiensis Britton accepted as Symphyotrichum priceae (Britton) G.L.Nesom
- Species Aster kernotii F.Muell. accepted as Olearia kernotii (F.Muell.) Mattf.
- Species Aster kingii D.C.Eaton accepted as Herrickia kingii (D.C.Eaton) Brouillet, Urbatsch & R.P.Roberts
- Species Aster kirghisorum (Fisch. ex M.Bieb.) Korsh. accepted as Galatella divaricata (Fisch. ex M.Bieb.) Novopokr.
- Species Aster kodzumanus Makino
- Species Aster koidzumianus (Kitam.) Nemoto accepted as Aster hispidus var. koidzumianus (Kitam.) Mot.Ito
- Species Aster koidzumianus Makino accepted as Aster maackii Regel
- Species Aster komarovii H.Lév. & Vaniot accepted as Doellingeria scabra (Thunb.) Nees
- Species Aster komonoensis Makino
- Species Aster kootenayi A.Nelson & J.F.Macbr. accepted as Symphyotrichum hendersonii (Fernald) G.L.Nesom
- Species Aster koraginensis Kom.
- Species Aster koraiensis Nakai accepted as Miyamayomena koraiensis (Nakai) Kitam.
- Species Aster korsakoviensis H.Lév. & Vaniot accepted as Aster glehnii F.Schmidt
- Species Aster korshinskyi Tamamsch. accepted as Aster alpinus L.
- Species Aster koshikiensis Kitam.
- Species Aster kraussii (Sch.Bip. ex Sch.Bip.) Harv. accepted as Felicia aethiopica subsp. aethiopica (Burm.f.) Bolus & Wolley-Dod ex Adamson & T.M.Salt
- Species Aster kumleini Fr. ex A.Gray
- Species Aster kumleinii Fr. ex Burgess
- Species Aster kumleinii Fr. ex A.Gray accepted as Symphyotrichum oblongifolium (Nutt.) G.L.Nesom
- Species Aster kyobuntensis Nakai
- Species Aster labrangensis Hand.-Mazz. accepted as Aster yunnanensis var. labrangensis (Hand.-Mazz.) Y.Ling
- Species Aster lacerus Lindl. ex DC. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster lacinians Borbás accepted as Callistephus chinensis (L.) Nees
- Species Aster lacunarum Aitch. & Hemsl. accepted as Chamaegeron oligocephalus Schrenk
- Species Aster lacunosus (Hook.f.) Kuntze accepted as Olearia lacunosa Hook.f.
- Species Aster laetevirens Greene accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster laetus Fisch. ex Ledeb. accepted as Galatella sedifolia (L.) Greuter
- Species Aster laeviformis Rydb.
- Species Aster laevigatus (Sond.) Kuntze
- Species Aster laevigatus Pursh
- Species Aster laevigatus Hook.
- Species Aster laevigatus Willd. accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster laevigatus Lam. accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster laevis Lindl.
- Species Aster laevis Vahl ex DC.
- Species Aster laevis L. accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster laka C.B.Clarke
- Species Aster lamarckianus Nees accepted as Symphyotrichum lanceolatum var. lanceolatum (Willd.) G.L.Nesom
- Species Aster lanatus L.
- Species Aster lanatus Cav.
- Species Aster lanatus (Hook.f.) Kuntze accepted as Haplopappus lanatus Hook.f.
- Species Aster lanceolatus (Hook.) Kuntze
- Species Aster lanceolatus Nutt.
- Species Aster lanceolatus Willd. accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster lancifolius (Torr. & A.Gray) Kuntze accepted as Solidago lancifolia (Torr. & A.Gray) Chapm.
- Species Aster langaoensis J.Q.Fu
- Species Aster lanuginosus H.L.Wendl. accepted as Felicia clavipilosa subsp. clavipilosa Grau
- Species Aster lanuginosus Kuntze accepted as Felicia hirsuta DC.
- Species Aster lanuginosus (J.Small) Y.Ling accepted as Wardaster lanuginosus J.Small
- Species Aster laricifolius (Hook.f.) F.Muell. accepted as Celmisia laricifolia Hook.f.
- Species Aster laricifolius (A.Gray) Kuntze accepted as Ericameria laricifolia (A.Gray) Shinners
- Species Aster lasiocarpus (DC.) Harv. accepted as Felicia lasiocarpa DC.
- Species Aster lasiocladus Hayata
- Species Aster lasiophaeus F.Muell.
- Species Aster lastarrianus (J.Rémy) Kuntze accepted as Haplopappus baylahuen J.Rémy
- Species Aster latahensis L.F.Hend.
- Species Aster lateralis hort.bonn. ex Nees accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster lateriflorus (L.) Britton accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster latibracteatus Franch.
- Species Aster laticorymbus Vaniot accepted as Aster ageratoides var. laticorymbus (Vaniot) Hand.-Mazz.
- Species Aster latifolius Desf. accepted as Eurybia macrophylla (L.) Cass.
- Species Aster latifolius Mill. accepted as Galatella sedifolia subsp. rigida (DC.) Greuter
- Species Aster latifolius Banks ex Steud. accepted as Oclemena acuminata (Michx.) Greene
- Species Aster latifolius (L.) Kuntze accepted as Solidago flexicaulis L.
- Species Aster latisquamatus (Maxim.) Hand.-Mazz.
- Species Aster latissimifolius (Mill.) Kuntze accepted as Solidago latissimifolia Mill.
- Species Aster laurentianus Fernald accepted as Symphyotrichum laurentianum (Fernald) G.L.Nesom
- Species Aster lautureanus (Debeaux) Franch. accepted as Kalimeris lautureana (Debeaux) Kitam.
- Species Aster lautus Lunell accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster lavandulaceus Willd. accepted as Diplostephium ericoides (Lam.) Cabrera
- Species Aster lavandulaceus Willd. ex DC. accepted as Diplostephium ericoides (Lam.) Cabrera
- Species Aster lavandulifolius Hand.-Mazz.
- Species Aster laxiflorus Lindl. accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster laxifolius Lindl.
- Species Aster laxifolius Nees accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster laxus Torr. & A.Gray accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster laxus Benth. accepted as Aster ageratoides var. firmus (Diels) Hand.-Mazz.
- Species Aster laxus Willd. accepted as Symphyotrichum lanceolatum var. lanceolatum (Willd.) G.L.Nesom
- Species Aster leavenworthii (Torr. & A.Gray) Kuntze accepted as Solidago leavenworthii Torr. & A.Gray
- Species Aster ledifolius A.Cunn. ex DC. accepted as Olearia ledifolia (DC.) Benth.
- Species Aster ledifolius Pursh accepted as Oclemena nemoralis (Aiton) Greene
- Species Aster ledophyllus (A.Gray) A.Gray accepted as Eucephalus ledophyllus (A.Gray) Greene
- Species Aster lehmannii F.Muell. accepted as Olearia lehmanniana (Steetz) Lander
- Species Aster leiocarpus (DC.) Harv. accepted as Zyrphelis montana (Schltr.) G.L.Nesom
- Species Aster leiodes S.F.Blake accepted as Dieteria canescens var. canescens (Pursh) Nutt.
- Species Aster leiophyllus Porter accepted as Symphyotrichum cordifolium (L.) G.L.Nesom
- Species Aster leiophyllus Franch. & Sav. accepted as Aster ageratoides Turcz.
- Species Aster leiophyllus Schloss. & Vuk. accepted as Symphyotrichum ×salignum (Willd.) G.L.Nesom
- Species Aster leiophylus
- Species Aster leiopyllus
- Species Aster leiospermus (A.Gray) Kuntze accepted as Ericameria nauseosa var. leiosperma (A.Gray) G.L.Nesom & G.I.Baird
- Species Aster lemmonii A.Gray accepted as Symphyotrichum potosinum (A.Gray) G.L.Nesom
- Species Aster lentus Greene accepted as Symphyotrichum lentum (Greene) G.L.Nesom
- Species Aster leonis Britton
- Species Aster lepidophyllus Pers. accepted as Olearia lepidophylla (Pers.) Benth.
- Species Aster lepidopodus B.L.Rob. & Fernald accepted as Erigeron lepidopodus (B.L.Rob. & Fernald) G.L.Nesom
- Species Aster lepidus (DC.) Kuntze accepted as Solidago canadensis var. lepida (DC.) Cronquist
- Species Aster leptocaulis E.S.Burgess
- Species Aster leptocephalus (Torr. & A.Gray) Kuntze accepted as Euthamia leptocephala (Torr. & A.Gray) Greene
- Species Aster leptocladus Makino accepted as Aster hispidus var. leptocladus (Makino) Mot.Ito
- Species Aster leptophyllus Fisch.
- Species Aster leptophyllus Desf.
- Species Aster leptophyllus hort.par. ex DC. accepted as Symphyotrichum ericoides (L.) G.L.Nesom
- Species Aster lerchenfeldianus Schur
- Species Aster leucanthemifolius Greene accepted as Dieteria canescens var. leucanthemifolia (Greene) D.R.Morgan & R.L.Hartm.
- Species Aster leucanthemus Raf.
- Species Aster leucanthemus Desf. accepted as Symphyotrichum parviflorum (Nees) Greuter
- Species Aster leucelene S.F.Blake accepted as Chaetopappa ericoides (Torr.) G.L.Nesom
- Species Aster leucopappus (Phil.) Reiche accepted as Noticastrum eriophorum J.Rémy
- Species Aster leucopsis Greene
- Species Aster liatroides Muhl. ex DC. accepted as Eurybia surculosa (Michx.) G.L.Nesom
- Species Aster liburnicus (Spreng.) Rouy accepted as Galatella linosyris (L.) Rchb.f.
- Species Aster likiangensis Franch. accepted as Aster asteroides subsp. costei (H.Lév.) Grierson
- Species Aster lilacinus Hoffmanns.
- Species Aster lima Lindl. accepted as Aster moranensis Kunth
- Species Aster lima Lindl. ex DC. accepted as Symphyotrichum moranense (Kunth) G.L.Nesom
- Species Aster limicola E.S.Burgess
- Species Aster limitaneus W.W.Sm. & Farrer accepted as Aster souliei Franch.
- Species Aster limnophilus Hemsl. & H.Pearson
- Species Aster limnophilus (Sch.Bip.) Hemsl. & Pearson accepted as Oritrophium limnophilum (Sch.Bip.) Cuatrec.
- Species Aster limonifolius (Less.) B.Fedtsch.
- Species Aster limoniifolius Greene
- Species Aster limosus Hemsl.
- Species Aster limosus Greene
- Species Aster limprichtii Diels
- Species Aster linariifolius Michx.
- Species Aster linariifolius L. accepted as Ionactis linariifolia (L.) Greene
- Species Aster lindenii Sch.Bip.
- Species Aster lindheimerianus (Scheele) Kuntze accepted as Solidago petiolaris Aiton
- Species Aster lindleyanus Torr. & A.Gray accepted as Symphyotrichum ciliolatum (Lindl.) Á.Löve & D.Löve
- Species Aster linearifolius (DC.) Kuntze accepted as Ericameria linearifolia (DC.) Urbatsch & Wussow
- Species Aster linearis (Greene) Cory accepted as Dieteria canescens var. glabra (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster lingii G.J.Zhang & T.G.Gao
- Species Aster linguiformis E.S.Burgess accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster lingulatus Franch.
- Species Aster linifolius Griseb. accepted as Aster squamatus (Spreng.) Hieron.
- Species Aster linifolius Torr. & A.Gray accepted as Aster subulatus Michx.
- Species Aster linifolius L. accepted as Galatella sedifolia (L.) Greuter
- Species Aster linifolius Harv. accepted as Felicia linifolia (Harv.) Grau
- Species Aster linifolius Burm.f. accepted as Senecio rosmarinifolius L.f.
- Species Aster linodes (Phil.) Kuntze accepted as Haplopappus linifolius (Phil.) Reiche
- Species Aster linoides hort.gaybac. ex DC. accepted as Microglossa caffrorum (Less.) Grau
- Species Aster linosyris Rouy
- Species Aster linosyris (L.) Bernh. accepted as Galatella linosyris (L.) Rchb.f.
- Species Aster linumae Kitam.
- Species Aster lipskii Kom.
- Species Aster liratus Sims accepted as Olearia stellulata (Labill.) DC.
- Species Aster listriformis E.S.Burgess
- Species Aster lithospermifolius DC.
- Species Aster lithospermifolius Desf. accepted as Kalimeris altaica (Willd.) Nees ex Fisch.Mey. & Avé-Lall.
- Species Aster litoralis Kom.
- Species Aster litoralis Phil. accepted as Erigeron fasciculatus Colla
- Species Aster lividus E.Forst. ex J.Forbes
- Species Aster lofouensis H.Lév. & Vaniot accepted as Pentanema indicum var. hypoleucum (Hand.-Mazz.) Ling
- Species Aster lonchophyllus Greene accepted as Symphyotrichum ascendens (Lindl.) G.L.Nesom
- Species Aster longicaulis (DC.) Dufour accepted as Tripolium pannonicum subsp. pannonicum (Jacq.) Dobrocz.
- Species Aster longicaulis Desf. ex DC. accepted as Tripolium pannonicum (Jacq.) Dobrocz.
- Species Aster longifolius Nees
- Species Aster longifolius Desf.
- Species Aster longifolius A.Gray
- Species Aster longifolius Lam. accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster longipes (Phil.) Kuntze accepted as Haplopappus velutinus J.Rémy
- Species Aster longipes Gardner accepted as Inulopsis scaposa (DC.) O.Hoffm.
- Species Aster longipetiolatus C.C.Chang accepted as Kalimeris longipetiolata (C.C.Chang)
- Species Aster longulus Sheld.
- Species Aster longulus E.Sheld. accepted as Symphyotrichum ×longulum G.L.Nesom
- Species Aster loriformis (E.S.Burgess) E.S.Burgess accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster lowrieanus Porter accepted as Symphyotrichum cordifolium (L.) G.L.Nesom
- Species Aster lucayanus Britton accepted as Symphyotrichum lucayanum (Britton) G.L.Nesom
- Species Aster lucens Kitam. accepted as Aster taiwanensis var. lucens (Kitam.) Kitam.
- Species Aster lucidulus Wend
- Species Aster lucidulus (A.Gray) Wiegand accepted as Symphyotrichum firmum (Nees) G.L.Nesom
- Species Aster lucidulus (A.Gray) Rydb. accepted as Symphyotrichum firmum (Nees) G.L.Nesom
- Species Aster lucidus Moench
- Species Aster lucidus Wend
- Species Aster lucidus Hort.Kew. ex Loudon accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster lucidus Wender. accepted as Symphyotrichum puniceum (L.) Á.Löve & D.Löve
- Species Aster luengoi Sennen
- Species Aster lusitanicus Brot. accepted as Aster willkommii Sch.Bip.
- Species Aster lutescens (Lindl. ex DC.) Torr. & A.Gray accepted as Solidago lutescens (Lindl. ex DC.) B.Boivin
- Species Aster luteus (N.E.Br.) Hutch. accepted as Felicia mossamedensis (Hiern) Mendonça
- Species Aster luxurians Spreng. accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster luxurifolius Tamamsch. accepted as Aster ageratoides Turcz.
- Species Aster luzonensis Elmer
- Species Aster lyallii Kuntze
- Species Aster lyallii (Hook.f.) F.Muell. accepted as Celmisia lyallii Hook.f.
- Species Aster lydenburgensis W.Lippert
- Species Aster lyratus Nees accepted as Olearia stellulata (Labill.) DC.
- Species Aster maackii Regel
- Species Aster maccallae Rydb. accepted as Symphyotrichum subspicatum (Nees) G.L.Nesom
- Species Aster macdougalii J.M.Coult. & Fisher
- Species Aster macdougalii B.L.Rob. & Seaton
- Species Aster macilentus Vaniot accepted as Inula nervosa Wall. ex DC.
- Species Aster mackaui (Raoul) F.Muell. accepted as Celmisia mackaui Raoul
- Species Aster macleaii E.Forst. ex J.Forbes
- Species Aster macounii Rydb. accepted as Symphyotrichum ascendens (Lindl.) G.L.Nesom
- Species Aster macraeanus (J.Rémy) Kuntze accepted as Haplopappus macraeanus (J.Rémy) Reiche
- Species Aster macrocephala DC.
- Species Aster macrocephalus (Baker) Hassl. accepted as Noticastrum macrocephalum (Baker) Cuatrec.
- Species Aster macrocephalus Kuntze accepted as Haplopappus macrocephalus (Poepp. ex Less.) DC.
- Species Aster macrodon H.Lév. & Vaniot accepted as Kalimeris incisa (Fisch.) DC.
- Species Aster macrodpm Lév. & Vaniot accepted as Kalimeris incisa (Fisch.) DC.
- Species Aster macrolophus H.Lév. & Vaniot accepted as Tripolium pannonicum subsp. tripolium (L.) Greuter
- Species Aster macronema (A.Gray) Kuntze accepted as Ericameria discoidea var. discoidea (Nutt.) G.L.Nesom
- Species Aster macrophyllus L. accepted as Eurybia macrophylla (L.) Cass.
- Species Aster macrorrhizus A.Cunn. ex DC. accepted as Minuria macrorhiza (DC.) Lander
- Species Aster macrorrhizus Thunb. accepted as Felicia macrorrhiza (Thunb.) DC.
- Species Aster madagascariensis (Humbert) Humbert accepted as Madagaster madagascariensis (Humbert) G.L.Nesom
- Species Aster madrensis M.E.Jones accepted as Symphyotrichum subulatum var. parviflorum (Nees) S.D.Sundb.
- Species Aster magellanicus Lam.
- Species Aster magellanicus Spreng. accepted as Chiliotrichum diffusum (G.Forst.) Kuntze
- Species Aster magniflorus F.Muell. accepted as Olearia magniflora (F.Muell.) F.Muell. ex Benth.
- Species Aster magnus Y.N.Lee & C.Kim
- Species Aster mairei H.Lév.
- Species Aster major (Hook.) Porter accepted as Canadanthus modestus (Lindl.) G.L.Nesom
- Species Aster majus (Hook.) Porter accepted as Canadanthus modestus (Lindl.) G.L.Nesom
- Species Aster majusculus Greene
- Species Aster mandrarensis Humbert accepted as Madagaster mandrarensis (Humbert) G.L.Nesom
- Species Aster mangshanensis Y.Ling
- Species Aster mangtaoensis Kitag. accepted as Kalimeris lautureana (Debeaux) Kitam.
- Species Aster marchandii H.Lév.
- Species Aster marchandii H.Lév. & Hand.-Mazz.
- Species Aster marcusii Kuntze accepted as Ericameria albida (M.E.Jones ex A.Gray) L.C.Anderson
- Species Aster marginalis (Phil.) Kuntze accepted as Haplopappus marginalis Phil.
- Species Aster marginatus Kunth accepted as Noticastrum marginatum (Kunth) Cuatrec.
- Variety Aster marginatus var. acaulis (Wedd.) Sch.Bip. accepted as Noticastrum marginatum (Kunth) Cuatrec.
- Variety Aster marginatus var. argenteus Wedd. accepted as Noticastrum argenteum Cabrera
- Variety Aster marginatus var. marginatus accepted as Aster marginatus Kunth
- Variety Aster marginatus var. tomentosus Wedd. accepted as Noticastrum sericeum (Less.) Less. ex Phil.
- Species Aster maritimus Salisb. accepted as Tripolium pannonicum subsp. tripolium (L.) Greuter
- Species Aster marshallii Kuntze accepted as Solidago missouriensis Nutt.
- Species Aster martii Baker accepted as Symphyotrichum martii (Baker) G.L.Nesom
- Species Aster maruyamae Kitam.
- Species Aster marylandicus Michx. accepted as Sericocarpus conyzoides Nees
- Species Aster masardiensis Rydb.
- Species Aster masardiensis E.S.Burgess
- Species Aster maximus (D.Don) Less. accepted as Leptostelma maximum D.Don
- Species Aster mayasanensis Kitam. accepted as Aster ovatus (Franch. & Sav.) Mot.Ito & Soejima
- Species Aster mearnsii Rydb. accepted as Symphyotrichum eatonii (A.Gray) G.L.Nesom
- Species Aster mediterraneus Soó accepted as Galatella sedifolia subsp. rigida (DC.) Greuter
- Species Aster medius (Krylov) Serg. accepted as Kalimeris altaica (Willd.) Nees ex Fisch.Mey. & Avé-Lall.
- Species Aster meehanii Jellett
- Species Aster megalanthus Y.Ling
- Species Aster megalodontus F.Muell. accepted as Olearia stuartii (F.Muell.) F.Muell. ex Benth.
- Species Aster megalophyllus (F.Muell.) F.Muell. accepted as Olearia megalophylla (F.Muell.) F.Muell. ex Benth.
- Species Aster megapotamicus Spreng.
- Species Aster mekongensis Onno accepted as Aster himalaicus C.B.Clarke
- Species Aster melenii H.Lév.
- Species Aster menelii H.Lév.
- Species Aster menthodorus (Benth.) Govaerts
- Species Aster menziesii Lindl.
- Species Aster menziesii Hook.
- Species Aster menziesii Lindl. ex DC. accepted as Symphyotrichum defoliatum (Parish) G.L.Nesom
- Species Aster meritus A.Nelson accepted as Eurybia merita (A.Nelson) G.L.Nesom
- Species Aster mesopotamicus Spreng.
- Species Aster mesopotamicus Steud.
- Species Aster mespilifolius Less. accepted as Microglossa mespilifolia (Less.) B.L.Rob.
- Species Aster mexicanus (L.) Kuntze accepted as Solidago sempervirens subsp. mexicana (L.) Semple
- Species Aster meyendorffii (Regel & Maack) Voss accepted as Kalimeris hispida (Thunb.) Nees
- Species Aster meyenii (Walp.) Kuntze accepted as Haplopappus meyenii Walp.
- Species Aster micranthus H.Lév. & Vaniot accepted as Aster fastigiatus Fisch.
- Species Aster microcephalus (Miq.) Franch. & Sav. accepted as Aster ovatus var. microcephalus (Miq.) Mot.Ito & Soejima
- Species Aster microlonchus Greene
- Species Aster micromaackii Nakai accepted as Aster maackii Regel
- Species Aster microphyllus Torr. ex Lindl.
- Species Aster microphyllus Labill. accepted as Olearia lepidophylla (Pers.) Benth.
- Species Aster microphyllus Vent. accepted as Olearia microphylla (Vent.) Maiden & Betche
- Species Aster microspermus (DC.) Harv. accepted as Felicia microsperma DC.
- Species Aster milanjiensis S.Moore
- Species Aster militaris Greene
- Species Aster millefolius Vaniot accepted as Kalimeris altaica (Willd.) Nees ex Fisch.Mey. & Avé-Lall.
- Species Aster milleri J.Forbes
- Species Aster minimus Hutch. accepted as Felicia minima (Hutch.) Grau
- Species Aster minor (A.Gray) Kuntze accepted as Oreochrysum parryi (A.Gray) Rydb.
- Species Aster minutus (L.) Kuntze accepted as Solidago virgaurea subsp. minuta (L.) Arcang.
- Species Aster miquelianus Hara
- Species Aster mirabilis Torr. & A.Gray accepted as Eurybia mirabilis (Torr. & A.Gray) G.L.Nesom
- Species Aster misellus Piper
- Species Aster miser L.
- Species Aster miser Dryand. ex Aiton accepted as Symphyotrichum tradescantii (L.) G.L.Nesom
- Species Aster miser Nutt. accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster miser Lam. accepted as Symphyotrichum laeve var. purpuratum (Nees) G.L.Nesom
- Species Aster missouriensis Britton & A.Brown
- Species Aster missouriensis Britton accepted as Symphyotrichum ontarionis (Wiegand) G.L.Nesom
- Species Aster missouriensis (Nutt.) Kuntze accepted as Solidago missouriensis Nutt.
- Species Aster mitchellii F.Muell. accepted as Olearia subspicata (Hook.) Benth.
- Species Aster miyabeanus Tatew. & Kitam. accepted as Erigeron miyabeanus (Tatew. & Kitam.) Tatew. & Kitam. ex Tatew. & Kita
- Species Aster miyagii Koidz.
- Species Aster modestus Lindl. accepted as Canadanthus modestus (Lindl.) G.L.Nesom
- Species Aster moelleri (Phil.) Reiche accepted as Aster squamatus (Spreng.) Hieron.
- Species Aster mohavensis Coville accepted as Xylorhiza tortifolia var. tortifolia (Torr. & A.Gray) Greene
- Species Aster mohavensis J.M.Coult. accepted as Xylorhiza tortifolia (Torr. & A.Gray) Greene
- Species Aster mohavensis (Greene) Kuntze accepted as Ericameria nauseosa var. mohavensis (Greene) G.L.Nesom & G.I.Baird
- Species Aster mohrii E.S.Burgess accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster mollescens E.S.Burgess
- Species Aster mollis Rydb. accepted as Symphyotrichum molle (Rydb.) G.L.Nesom
- Species Aster molliusculus (Lindl. ex DC.) C.B.Clarke
- Species Aster molliusculus Wall.
- Species Aster monactis (A.Gray) Kuntze accepted as Ericameria cooperi (A.Gray) H.M.Hall
- Species Aster monanthus Vell.
- Species Aster mongolicus Franch. accepted as Kalimeris mongolica (Franch.) Kitam.
- Species Aster monocephalus Boiss. accepted as Kemulariella caucasica (Willd.) Tamansch.
- Species Aster montanus R.Br. ex Richardson accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster montanus R.Br. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster montanus All. accepted as Inula montana L.
- Species Aster montanus Nutt. accepted as Symphyotrichum sericeum (Vent.) G.L.Nesom
- Species Aster montevidensis (Spreng.) Griseb. accepted as Noticastrum diffusum (Pers.) Cabrera
- Species Aster monticola Lindl. ex DC.
- Species Aster monticola (Torr. & A.Gray) Kuntze
- Species Aster monticolus Kuntze accepted as Solidago roanensis Porter
- Species Aster monticolus Lindl. ex DC. accepted as Erigeron monticolus DC.
- Species Aster mooneyi F.Muell.
- Species Aster moranensis Kunth
- Species Aster morrisonensis Hayata
- Species Aster moschatus Kuntze
- Species Aster moschatus (Hook.f.) F.Muell. accepted as Olearia moschata Hook.f.
- Species Aster moschatus Hort. ex Colla accepted as Olearia argophylla (Labill.) F.Muell. ex Benth.
- Species Aster motuoensis Y.L.Chen
- Species Aster moupinensis (Franch.) Hand.-Mazz. accepted as Erigeron moupinensis Franch.
- Species Aster mucronatus Sheldon
- Species Aster mucronatus E.Sheld.
- Species Aster muehlenbergianus Kuntze accepted as Solidago squarrosa Muhl. ex Nutt.
- Species Aster muehlenbergii Tausch accepted as Erigeron philadelphicus Michx.
- Species Aster muelleri (Sond.) F.Muell. accepted as Olearia muelleri (Sond.) Benth.
- Species Aster muirii (A.Gray) Onno accepted as Erigeron muirii A.Gray
- Species Aster muliensis Hand.-Mazz.
- Species Aster multibracteolatus (Colenso) Kuntze accepted as Olearia ilicifolia Hook.f.
- Species Aster multicaulis Kuntze accepted as Oonopsis multicaulis (Nutt.) Greene
- Species Aster multiceps Lindl.
- Species Aster multiceps Lindl. ex DC. accepted as Symphyotrichum oblongifolium (Nutt.) G.L.Nesom
- Species Aster multiflorus Dryand.
- Species Aster multiflorus Kuntze
- Species Aster multiflorus Bertol.
- Species Aster multiflorus Nutt. accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster multiflorus Dryand. ex Aiton accepted as Symphyotrichum ericoides (L.) G.L.Nesom
- Species Aster multifolius (Phil. ex Reiche) Kuntze accepted as Haplopappus multifolius Phil. ex Reiche
- Species Aster multiformis E.S.Burgess ex Britton & A.Brown
- Species Aster multiformis E.S.Burgess accepted as Eurybia macrophylla (L.) Cass.
- Species Aster multiradiatus Wall. accepted as Erigeron multiradiatus (Lindl. ex DC.) Benth. & Hook.f.
- Species Aster multiradiatus (Aiton) Kuntze accepted as Solidago multiradiata Aiton
- Species Aster muricatus (Steetz) F.Muell. accepted as Olearia muricata (Steetz) Benth.
- Species Aster muricatus Thunb. accepted as Felicia muricata subsp. muricata (Thunb.) Nees
- Species Aster mutabilis Vell.
- Species Aster mutabilis L.
- Species Aster mutabilis Dryand. ex Aiton accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster mutabilis Willd. accepted as Symphyotrichum versicolor (Willd.) G.L.Nesom
- Species Aster mutatus Torr. & A.Gray accepted as Canadanthus modestus (Lindl.) G.L.Nesom
- Species Aster mutisianus Cuatrec. accepted as Oritrophium limnophilum (Sch.Bip.) Cuatrec.
- Species Aster myriantus Carrière
- Species Aster myrsinoides Labill. accepted as Olearia myrsinoides (Labill.) F.Muell. ex Benth.
- Species Aster myrtifolius Willd. accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster nahanniensis Cody accepted as Symphyotrichum nahanniense (Cody) Semple
- Species Aster nakai H.Lév. & Vaniot
- Species Aster nakaii H.Lév. & Vaniot accepted as Aster tataricus L.f.
- Species Aster nakaoi Kitam.
- Species Aster namaquanus Harv. accepted as Felicia namaquana (Harv.) Merxm.
- Species Aster nanus (Nutt.) Kuntze accepted as Solidago nana Nutt.
- Species Aster nanus E.Mey. ex DC. accepted as Zyrphelis microcephala (Less.) Nees
- Species Aster nardophyllum Kuntze accepted as Nardophyllum bryoides (Lam.) Cabrera
- Species Aster natalensis (Sch.Bip.) Harv. accepted as Felicia rosulata Yeo
- Species Aster nebraskensis Britton & A.Brown
- Species Aster nebraskensis Britton accepted as Symphyotrichum praealtum (Poir.) G.L.Nesom
- Species Aster neesii Sch.Bip. accepted as Symphyotrichum chilense (Nees) G.L.Nesom
- Species Aster nelsonii Greene
- Species Aster nemoralis Dryand. ex Aiton accepted as Oclemena nemoralis (Aiton) Greene
- Species Aster neoelegans Grierson
- Species Aster neomexicanus Wooton & Standl. accepted as Symphyotrichum subulatum var. ligulatum (Shinners) S.D.Sundb.
- Species Aster neozelandicus Kuntze accepted as Pachystegia insignis (Hook.f.) Cheeseman
- Species Aster nernstii F.Muell. accepted as Olearia nernstii (F.Muell.) F.Muell. ex Benth.
- Species Aster nervosus Mill.
- Species Aster nevadensis (A.Gray) Kuntze accepted as Ericameria parryi var. nevadensis (A.Gray) G.L.Nesom & G.I.Baird
- Species Aster nevinii Kuntze accepted as Ericameria palmeri (A.Gray) H.M.Hall
- Species Aster nigrescens Vaniot
- Species Aster nigrocinctus Ling
- Species Aster nigromontanus Dunn
- Species Aster nikoensis Nakai ex Terazaki
- Species Aster nitens Kuntze accepted as Noticastrum sericeum (Less.) Less. ex Phil.
- Species Aster nitidulus DC.
- Species Aster nitidus C.C.Chang
- Species Aster nitidus Chang
- Species Aster nivalis Adams
- Species Aster nivalis Adam accepted as Aster alpinus L.
- Species Aster nobilis E.S.Burgess
- Species Aster nobilis E.S.Burgess ex Britton & A.Brown
- Species Aster noeanus Sch.Bip. ex Nyman accepted as Aster amellus L.
- Species Aster notosericeus Griseb. accepted as Noticastrum sericeum (Less.) Less. ex Phil.
- Species Aster novae-angliae L. accepted as Symphyotrichum novae-angliae (L.) G.L.Nesom
- Species Aster novae-belgiae
- Species Aster novae-scotiae J.Forbes
- Species Aster novi-belgii L. accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster novopokrovskyi Iljin
- Species Aster nubimontis W.Lippert
- Species Aster nudatus (Michx.) Kuntze
- Species Aster nudicaulis Comm. ex Lam. accepted as Lagenophora nudicaulis (Comm. ex Lam.) Dusén
- Species Aster nudiflorus Nutt. accepted as Eurybia radula (Sol. ex Aiton) G.L.Nesom
- Species Aster nummulariifolius (Hook.f.) Kuntze accepted as Olearia nummulariifolia (Hook.f.) Hook.f.
- Species Aster nutatus (DC.) Kuntze accepted as Bigelowia nudata (Michx.) DC.
- Species Aster nuttallii Torr. & A.Gray accepted as Symphyotrichum ascendens (Lindl.) G.L.Nesom
- Species Aster nuttallii (Torr. & A.Gray) Kuntze accepted as Xanthisma grindelioides (Nutt.) D.R.Morgan & R.L.Hartm.
- Species Aster obcordatus (Hook.f.) F.Muell. accepted as Olearia obcordata (Hook.f.) Benth.
- Species Aster obliquus DC. accepted as Symphyotrichum puniceum (L.) Á.Löve & D.Löve
- Species Aster obliquus Nees accepted as Symphyotrichum puniceum (L.) Á.Löve & D.Löve
- Species Aster oblongifolius Nutt. accepted as Symphyotrichum oblongifolium (Nutt.) G.L.Nesom
- Species Aster obovatus C.A.Mey.
- Species Aster obovatus (Nutt.) Elliott accepted as Oclemena reticulata (Pursh) G.L.Nesom
- Species Aster obtusatus Thunb. accepted as Chrysocoma obtusata (Thunb.) Ehr.Bayer
- Species Aster occidentalis (Nutt.) Torr. & A.Gray accepted as Symphyotrichum spathulatum var. spathulatum (Lindl.) G.L.Nesom
- Species Aster ochagavianus Kuntze
- Species Aster ochagaviensis (Phil.) Kuntze accepted as Haplopappus ochagavianus Phil.
- Species Aster ochraceus Kunth accepted as Diplostephium ochraceum (Kunth) Nees
- Species Aster ochroleucus (Klatt) Kuntze accepted as Diplostephium floribundum (Benth.) Wedd.
- Species Aster oculus Christi
- Species Aster oculus-christi (L.) Cav. accepted as Inula oculus-christi L.
- Species Aster odontophyllus Wall. accepted as Senecio linifolius (L.) L.
- Species Aster odoratus L. ex B.D.Jacks.
- Species Aster odorus All.
- Species Aster odorus (Aiton) Kuntze accepted as Solidago odora Aiton
- Species Aster officinalis All. accepted as Inula helenium L.
- Species Aster oharae Nakai
- Species Aster oharai Nakai accepted as Aster spathulifolius Maxim.
- Species Aster ohioensis (Riddell) Kuntze accepted as Solidago ohioensis Riddell
- Species Aster ohtanus Makino accepted as Aster sohayakiensis Koidz.
- Species Aster okanoganus Piper
- Species Aster oldhamii Hemsl. accepted as Kalimeris hispida (Thunb.) Nees
- Species Aster oleifolius (Kirk) Kuntze accepted as Olearia oleifolia Kirk
- Species Aster oleifolius (Lam.) Wagenitz accepted as Galatella villosa (L.) Rchb.f.
- Species Aster oliganthemus (Benth.) F.Muell.
- Species Aster oliganthus W.P.Li & Zhi Li
- Species Aster oligocephalus (Schrenk) Kitam. accepted as Chamaegeron oligocephalus Schrenk
- Species Aster oligodontus Kuntze accepted as Haplopappus glutinosus Cass.
- Species Aster olivaceus E.S.Burgess
- Species Aster omerophyllus Hayata accepted as Aster hispidus Thunb.
- Species Aster ontariensis Wiegand accepted as Symphyotrichum ontarionis (Wiegand) G.L.Nesom
- Species Aster ontarionis Wiegand accepted as Symphyotrichum ontarionis (Wiegand) G.L.Nesom
- Species Aster onustus Nees accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster oolentangiensis Riddell accepted as Symphyotrichum oolentangiense (Riddell) G.L.Nesom
- Species Aster operinus (Hook.f.) Kuntze accepted as Olearia chathamica Kirk
- Species Aster oppositifolius L. accepted as Felicia cymbalariae subsp. cymbalariae (Aiton) Bolus & Wolley-Dod ex Adamson & T.M.Salter
- Species Aster oppositifolius (A.Gray) Kuntze accepted as Ageratina mygindaefolia (A.Gray) R.M.King & H.Rob.
- Species Aster oppositifolius (F.Muell.) F.Muell. accepted as Olearia oppositifolia (F.Muell.) Lander
- Species Aster orarius F.Muell. accepted as Olearia glutinosa (Lindl.) Benth.
- Species Aster orbicularis E.S.Burgess
- Species Aster orcuttii Vasey & Rose accepted as Xylorhiza orcuttii (Vasey & Rose) Greene
- Species Aster oreaster (Onno) Farrer ex Onno accepted as Aster brachytrichus Franch.
- Species Aster oreganus Torr. & A.Gray
- Species Aster oregonensis (Nutt.) Cronquist accepted as Sericocarpus oregonensis Nutt.
- Species Aster oregonum (Nutt.) Torr. & A.Gray accepted as Symphyotrichum subspicatum (Nees) G.L.Nesom
- Species Aster oreophilus Franch.
- Species Aster oreophilus Farrer
- Species Aster orientalis S.G.Gmel. accepted as Inula britannica L.
- Species Aster ornatus Hort.Angl. ex Steud. accepted as Eurybia ×herveyi (A.Gray) G.L.Nesom
- Species Aster orthophyllus Greene
- Species Aster osterhoutii Rydb. accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster otagoensis Kuntze accepted as Olearia tomentosa (Wendl.) DC.
- Species Aster oticus Rydb.
- Species Aster ottomanum Velen. accepted as Aster amellus L.
- Species Aster ottonis E.Forst. ex J.Forbes
- Species Aster outeniquae Fourc.
- Species Aster ovalifolius Kitam.
- Species Aster ovatus (Franch. & Sav.) Mot.Ito & Soejima
- Species Aster oviformis (E.S.Burgess) E.S.Burgess
- Species Aster oxylepis Greene
- Species Aster oxyphyllus Greene
- Species Aster pallens Willd. accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster pallidulus B.Vogel accepted as Symphyotrichum cordifolium (L.) G.L.Nesom
- Species Aster palmeri A.Gray accepted as Neonesomia palmeri (A.Gray) Urbatsch & R.P.Roberts
- Species Aster paludicola Piper accepted as Symphyotrichum spathulatum var. yosemitanum (A.Gray) G.L.Nesom
- Species Aster paludosus Dryand.
- Species Aster paludosus Sol. ex Aiton accepted as Eurybia paludosa (Sol. ex Aiton) G.L.Nesom
- Species Aster palustris Lam. accepted as Tripolium pannonicum subsp. tripolium (L.) Greuter
- Species Aster panduratus Nees ex Walp.
- Species Aster paniculatus Muhl.
- Species Aster paniculatus Dryand.
- Species Aster paniculatus Mill.
- Species Aster paniculatus Nutt.
- Species Aster paniculatus Willd.
- Species Aster paniculatus Dryand. ex Aiton accepted as Symphyotrichum ciliolatum (Lindl.) Á.Löve & D.Löve
- Species Aster paniculatus Lam. accepted as Symphyotrichum lanceolatum var. lanceolatum (Willd.) G.L.Nesom
- Species Aster pannonicus Jacq. accepted as Tripolium pannonicum (Jacq.) Dobrocz.
- Species Aster pannosus (Hook.) F.Muell. accepted as Olearia pannosa subsp. pannosa Hook.
- Species Aster pansus (S.F.Blake) Cronquist accepted as Symphyotrichum ericoides (L.) G.L.Nesom
- Species Aster pantotrichus S.F.Blake accepted as Symphyotrichum ontarionis (Wiegand) G.L.Nesom
- Species Aster pappei Harv. accepted as Felicia amoena subsp. amoena (Sch.Bip.) Levyns
- Species Aster papposissimus H.Lév. accepted as Tripolium pannonicum subsp. tripolium (L.) Greuter
- Species Aster papposus Willd. ex Spreng. accepted as Printzia polifolia (L.) Hutch.
- Species Aster parafastigiatus Nakai
- Species Aster parishii (Greene) Kuntze accepted as Ericameria parishii (Greene) H.M.Hall
- Species Aster parryi A.Gray accepted as Xylorhiza glabriuscula Nutt.
- Species Aster parthianus E.S.Burgess
- Species Aster parviceps (E.S.Burgess) Mack. & Bush accepted as Symphyotrichum parviceps (E.S.Burgess) G.L.Nesom
- Species Aster parviflorus Darlingt.
- Species Aster parviflorus Phil.
- Species Aster parviflorus Nees accepted as Symphyotrichum parviflorum (Nees) Greuter
- Species Aster parviflorus (A.Gray) Hemsl. accepted as Arida parviflora (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster parviflorus (A.Gray) A.Gray accepted as Arida parviflora (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster parvifolius (DC.) Kuntze accepted as Haplopappus parvifolius (DC.) Gay
- Species Aster parvulus S.F.Blake accepted as Arida parviflora (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster patagonicus Kuntze
- Species Aster patagonicus Cabrera accepted as Symphyotrichum patagonicum (Cabrera) G.L.Nesom
- Species Aster patagoniensis (Phil.) Kuntze accepted as Grindelia brachystephana Griseb.
- Species Aster patanianus Hieron.
- Species Aster patens Dryand.
- Species Aster patens Dryand. ex Aiton accepted as Symphyotrichum patens (Aiton) G.L.Nesom
- Species Aster patentissimus Lindl. ex DC. accepted as Symphyotrichum patens var. patentissimum (Lindl. ex Lindl.) G.L.Nesom
- Species Aster paternus Cronquist accepted as Sericocarpus asteroides (L.) Britton, Sterns & Poggenb.
- Species Aster pattersonii A.Gray accepted as Dieteria bigelovii var. bigelovii (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster patulus Lam. accepted as Symphyotrichum patulum (Lam.) Karlsson
- Species Aster paucicapitatus (B.L.Rob.) B.L.Rob. accepted as Eucephalus paucicapitatus (B.L.Rob.) Greene
- Species Aster paucidentatus (Steetz) F.Muell. accepted as Olearia paucidentata (Steetz) Benth.
- Species Aster pauciflorus Lindl. ex DC.
- Species Aster pauciflorus Nutt. accepted as Almutaster pauciflorus (Nutt.) Á.Löve & D.Löve
- Species Aster pauciflorus M.Martens accepted as Symphyotrichum ericoides (L.) G.L.Nesom
- Species Aster pauciflosculosus (Michx.) Kuntze accepted as Chrysoma pauciflosculosa (Michx.) Greene
- Species Aster pectinatus (Phil.) Kuntze accepted as Grindelia anethifolia (Phil.) Adr.Bartoli & Tortosa
- Species Aster pedionomus Alexander accepted as Eurybia paludosa (Sol. ex Aiton) G.L.Nesom
- Species Aster peduncularis Wall. ex Nees
- Species Aster peduncularis Wall.
- Species Aster pedunculosus (J.Rémy) Kuntze accepted as Haplopappus pedunculosus J.Rémy
- Species Aster peglerae Bolus
- Species Aster peirsonii Sharsm. accepted as Oreostemma peirsonii (Sharsm.) G.L.Nesom
- Species Aster pekinensis (Homce) F.H.Chen
- Species Aster pekinensis (Hance) Merr. accepted as Kalimeris integrifolia Turcz. ex DC.
- Species Aster pekinensis (Hance) Kitag. accepted as Kalimeris integrifolia Turcz. ex DC.
- Species Aster pekinensis (Hance) Chen accepted as Kalimeris integrifolia Turcz. ex DC.
- Species Aster pellitus Kunth accepted as Oritrophium peruvianum (Lam.) Cuatrec.
- Species Aster pendulus Aiton
- Species Aster pendulus Dryand.
- Species Aster pensauensis Tamamsch. accepted as Aster ageratoides Turcz.
- Species Aster pensilvanicus Poir. accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster peregrinus Less. accepted as Symphyotrichum foliaceum (Lindl. ex DC.) G.L.Nesom
- Species Aster peregrinus Banks ex Pursh accepted as Erigeron peregrinus (Banks ex Pursh) Greene
- Species Aster perelegans A.Nelson & J.F.Macbr. accepted as Eucephalus elegans Nutt.
- Species Aster perezii Cuatrec. accepted as Noticastrum marginatum (Kunth) Cuatrec.
- Species Aster perezioides (Nees) Less. accepted as Zyrphelis perezioides (Less.) G.L.Nesom
- Species Aster perfoliatus Oliv.
- Species Aster perrugosus Nakai
- Species Aster persaliens E.S.Burgess
- Species Aster persoonioides (DC.) F.Muell.
- Species Aster persoonioides A.Cunn.
- Species Aster persoonioides (DC.) A.Cunn. ex DC. accepted as Olearia persoonioides (DC.) Benth.
- Species Aster peruvianus (Lam.) Cabrera accepted as Oritrophium peruvianum (Lam.) Cuatrec.
- Species Aster pesthiensis DC.
- Species Aster peteroanus Phil. accepted as Symphyotrichum peteroanum (Phil.) G.L.Nesom
- Species Aster petiolaris (Aiton) Kuntze accepted as Solidago petiolaris Aiton
- Species Aster petiolatus (Hook.f.) F.Muell. accepted as Celmisia verbascifolia Hook.f.
- Species Aster petiolatus Harv. accepted as Felicia petiolata (Harv.) N.E.Br.
- Species Aster philadelphicus Bart.
- Species Aster philippii Sch.Bip.
- Species Aster philippii Kuntze accepted as Haplopappus philippii (Kuntze) H.M.Hall
- Species Aster philippinensis S.Moore
- Species Aster phlogifolius Muhl. ex Willd. accepted as Symphyotrichum phlogifolium (Muhl. ex Willd.) G.L.Nesom
- Species Aster phlogopappus Labill. accepted as Olearia stellulata (Labill.) DC.
- Species Aster phlogotrichus Spreng.
- Species Aster phylicoides Kunth accepted as Diplostephium phylicoides (Kunth) Wedd.
- Species Aster phyllocephalus (DC.) Kuntze accepted as Rayjacksonia phyllocephala (DC.) R.L.Hartm. & M.A.Lane
- Species Aster phyllodes Rydb. accepted as Symphyotrichum foliaceum var. canbyi (A.Gray) G.L.Nesom
- Species Aster phyllolepis Torr. & A.Gray accepted as Symphyotrichum pratense (Raf.) G.L.Nesom
- Species Aster piccolii Hook.f. accepted as Miyamayomena piccolii (Hook.f.) Kitam.
- Species Aster pichinchensis Willd. ex Nees accepted as Diplostephium rupestre (Kunth) Wedd.
- Species Aster pickeringii Kuntze accepted as Stenotus lanuginosus (A.Gray) Greene
- Species Aster pickettianus Suksd. accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster pilosus Willd. accepted as Symphyotrichum pilosum (Willd.) G.L.Nesom
- Species Aster pimeleoides A.Cunn.
- Species Aster pimeleoides A.Cunn. ex DC. accepted as Olearia pimeleoides (DC.) Benth.
- Species Aster pineus (Phil.) Kuntze accepted as Haplopappus pinea (Phil.) Reiche
- Species Aster pinifolius Alexander accepted as Symphyotrichum kralii G.L.Nesom
- Species Aster pinifolius (Hook.f.) F.Muell. accepted as Olearia pinifolia (Hook.f.) Benth.
- Species Aster pinifolius Nees accepted as Symphyotrichum pilosum (Willd.) G.L.Nesom
- Species Aster pinnarus
- Species Aster pinnatifidus Sessé & Moc. accepted as Machaeranthera tanacetifolia (Kunth) Nees
- Species Aster pinnatifidus Makino accepted as Aster iinumae Kitam. ex Hara
- Species Aster pinnatifidus (Hook.) Kuntze accepted as Xanthisma spinulosum (Pursh) D.R.Morgan & R.L.Hartm.
- Species Aster pinnatus Cav. accepted as Dyssodia pinnata var. pinnata (Cav.) B.L.Rob.
- Species Aster pityphyllus Kuntze accepted as Ericameria pinifolia (A.Gray) H.M.Hall
- Species Aster plantagineus Poepp. ex DC. accepted as Senecio arnicoides Hook. & Arn.
- Species Aster plantaginifolius Nutt. ex Nees accepted as Sericocarpus conyzoides Nees
- Species Aster platylepis accepted as Doronicum latisquamatum C.E.C.Fisch.
- Species Aster pleiocephalus (Harv.) Hutch.
- Species Aster pleurophyllum F.Muell. accepted as Pleurophyllum speciosum Hook.f.
- Species Aster plumarius E.S.Burgess accepted as Symphyotrichum cordifolium (L.) G.L.Nesom
- Species Aster plumosus Small accepted as Symphyotrichum plumosum (Small) Semple
- Species Aster pluriflorus G.Don
- Species Aster poaceus Burgess
- Species Aster poaceus E.S.Burgess accepted as Symphyotrichum oolentangiense (Riddell) G.L.Nesom
- Species Aster podocomoides (Baker) Hassl.
- Species Aster pohlii Baker
- Species Aster polifolius L. accepted as Printzia polifolia (L.) Hutch.
- Species Aster polios C.K.Schneid.
- Species Aster poliothamnus Diels
- Species Aster politus Nees accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster polycephalus Rydb. accepted as Symphyotrichum ericoides var. ericoides (L.) G.L.Nesom
- Species Aster polyglossa Kuntze accepted as Solidago chilensis Meyen
- Species Aster polyphyllus Moench accepted as Eurybia macrophylla (L.) Cass.
- Species Aster polyphyllus (Phil.) Kuntze accepted as Haplopappus foliosus DC.
- Species Aster polyphyllus Pursh ex DC. accepted as Symphyotrichum tenuifolium (L.) G.L.Nesom
- Species Aster polyphyllus Willd. accepted as Symphyotrichum pilosum (Willd.) G.L.Nesom
- Species Aster poncinsii Franch. accepted as Erigeron poncinsii (Franch.) Botsch.
- Species Aster popovii Botsch.
- Species Aster populifolius (Colenso) Kuntze accepted as Olearia arborescens (G.Forst.) Cockayne & Laing
- Species Aster porteri A.Gray accepted as Symphyotrichum porteri (A.Gray) G.L.Nesom
- Species Aster potosinus A.Gray accepted as Symphyotrichum potosinum (A.Gray) G.L.Nesom
- Species Aster pradensis Phil. accepted as Noticastrum adscendens DC.
- Species Aster praealtus Torr. & A.Gray
- Species Aster praealtus Poir. accepted as Symphyotrichum praealtum (Poir.) G.L.Nesom
- Species Aster praecox Lindl. accepted as Symphyotrichum ciliolatum (Lindl.) Á.Löve & D.Löve
- Species Aster praecox Mill. accepted as Aster pyrenaeus Desf. ex DC.
- Species Aster praecox Willd. accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster praetermissus Drumm. ex S.Y.Hu
- Species Aster praetermissus Drumm. ex Hand.-Mazz. accepted as Heteropappus crenatifolius (Hand.-Mazz.) Grierson
- Species Aster prainii (J.R.Drumm.) Y.L.Chen
- Species Aster prascottii Lindl. ex DC. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster pratensis Raf. accepted as Symphyotrichum pratense (Raf.) G.L.Nesom
- Species Aster pratincola Greene
- Species Aster preissii F.Muell. accepted as Olearia heleophila F.Muell.
- Species Aster prenanthoides Muhl. ex Willd. accepted as Symphyotrichum prenanthoides (Muhl. ex Willd.) G.L.Nesom
- Species Aster prescottii Lindl.
- Species Aster priceae Britton accepted as Symphyotrichum priceae (Britton) G.L.Nesom
- Species Aster pringlei A.Gray
- Species Aster pringlei Britton & A.Brown
- Species Aster pringlei (A.Gray) Britton accepted as Symphyotrichum pilosum (Willd.) G.L.Nesom
- Species Aster pristiphyllus (J.Rémy) Kuntze accepted as Haplopappus pristiphyllus (J.Rémy) H.M.Hall
- Species Aster procerus Hemsl. accepted as Kalimeris procera (Hemsl.) S.Y.Hu
- Species Aster procumbens Houst. ex Mill. accepted as Erigeron procumbens (Houst. ex Mill.) G.L.Nesom
- Species Aster propinquus A.Cunn. ex DC. accepted as Olearia ramulosa (Labill.) Benth.
- Species Aster prostratus Phil. accepted as Erigeron othonnifolius Hook. & Arn.
- Species Aster proteus E.S.Burgess accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster proximus Greene
- Species Aster prunelloides (Poepp. ex Less.) Kuntze accepted as Haplopappus prunelloides (Poepp. ex Less.) Poepp. ex DC.
- Species Aster psammophila (Malme) Herter accepted as Noticastrum malmei Zardini
- Species Aster psammophilus (Malme) Herter
- Species Aster psammophilus (Malme) Klatt accepted as Noticastrum psammophilum (Klatt) Cuatrec.
- Species Aster psammophilus (Malme) Malag. accepted as Noticastrum malmei Zardini
- Species Aster pseudamellus Wender. accepted as Aster amellus L.
- Species Aster pseudamellus Hook.f. accepted as Aster indamellus Grierson
- Species Aster pseudoamellus DC. accepted as Aster amellus L.
- Species Aster pseudoasagrayi Makino
- Species Aster pseudobakeranus W.Lippert
- Species Aster pseudobarcincnensis Sennen accepted as Aster squamatus (Spreng.) Hieron.
- Species Aster pseudodiffusus E.Forst. ex J.Forbes
- Species Aster pseudodumosus (Thell.) Bergmans
- Species Aster pseudodumosus E.Forst. ex J.Forbes
- Species Aster pseudoglehnii Y.S.Lim, Hyun & H.Shin
- Species Aster psychensis Kem.-Nath.
- Species Aster ptarmicoides (Nees) Torr. & A.Gray accepted as Solidago ptarmicoides (Torr. & A.Gray) B.Boivin
- Species Aster pteronia Kuntze accepted as Pteronia paniculata Thunb.
- Species Aster pubens (M.A.Curtis ex Torr. & A.Gray) Kuntze accepted as Solidago bicolor L.
- Species Aster pubentior Cronquist accepted as Doellingeria umbellata (Mill.) Nees
- Species Aster pubescens Nees accepted as Symphyotrichum cordifolium (L.) G.L.Nesom
- Species Aster pubescens Lam. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster pubescens Hornem. accepted as Symphyotrichum cordifolium (L.) G.L.Nesom
- Species Aster pubescens Moench accepted as Inula conyza (Griess.) DC.
- Species Aster pujosii Quézel
- Species Aster pulchellus Hohen. accepted as Aster alpinus L.
- Species Aster pulchellus Turcz. ex Herder accepted as Aster flaccidus Bunge
- Species Aster pulchellus Willd. accepted as Erigeron caucasicus subsp. venustus (Botsch.) Grierson
- Species Aster pulchellus D.C.Eaton accepted as Oreostemma alpigenum var. haydenii (Porter) G.L.Nesom
- Species Aster pulcherrimus Lodd. accepted as Ionactis linariifolia (L.) Greene
- Species Aster pulimus Banks & Sol. ex Hook.f.
- Species Aster pulverulentis Hoffmanns.
- Species Aster pulverulentus Hoffmanns. accepted as Olearia stellulata (Labill.) DC.
- Species Aster pulverulentus (Nutt.) Kuntze accepted as Solidago puberula subsp. pulverulenta (Nutt.) Semple
- Species Aster pumilus Banks & Sol. ex Hook.f.
- Species Aster pumilus Fisch. accepted as Kalimeris altaica (Willd.) Nees ex Fisch.Mey. & Avé-Lall.
- Species Aster pumilus Kuntze accepted as Petradoria pumila (Nutt.) Greene
- Species Aster punctatus Lapeyr.
- Species Aster punctatus Waldst. & Kit. accepted as Galatella sedifolia (L.) Greuter
- Species Aster punctatus (Cass.) Parsa accepted as Galatella sedifolia (L.) Greuter
- Species Aster puniceus Elliott
- Species Aster puniceus Torr. & A.Gray
- Species Aster puniceus L. accepted as Symphyotrichum puniceum (L.) Á.Löve & D.Löve
- Species Aster purdomii Hutch. accepted as Aster flaccidus Bunge
- Species Aster purpurascens Sch.Bip.
- Species Aster purpuratus Nees accepted as Symphyotrichum laeve var. purpuratum (Nees) G.L.Nesom
- Species Aster purpureo-caerulescens Hill
- Species Aster purpureus Jacq. ex Steud.
- Species Aster purpureus Gueldenst. ex Ledeb. accepted as Aster amellus L.
- Species Aster purschianus Kuntze accepted as Solidago tortifolia Elliott
- Species Aster pusillus Hornem.
- Species Aster pusillus (N.E.Br.) Hutch. accepted as Felicia dubia Cass.
- Species Aster pycnophyllus Franch. ex Diels
- Species Aster pycnophyllus Franch. ex W.W.Sm.
- Species Aster pygmaeus Lindl. accepted as Symphyotrichum pygmaeum (Lindl.) Brouillet & Selliah
- Species Aster pyrenaeus Desf. ex DC.
- Species Aster pyrenaeus Pourr.
- Species Aster pyrenaicus Desf. ex DC.
- Species Aster pyrenaicus Pourr. accepted as Erigeron alpinus L.
- Species Aster pyropappus Boiss.
- Species Aster pyrrhocoma Kuntze accepted as Pyrrocoma racemosa (Nutt.) Torr. & A.Gray
- Species Aster pyrrhopappus Boiss. accepted as Kalimeris altaica (Willd.) Nees ex Fisch.Mey. & Avé-Lall.
- Species Aster quadratus E.S.Burgess
- Species Aster quelpaertensis H.Lév. & Vaniot accepted as Aster ageratoides Turcz.
- Species Aster quercifolius Sieber ex DC. accepted as Olearia stellulata (Labill.) DC.
- Species Aster quercifolius Less. ex Walp. accepted as Erigeron quercifolius Pursh
- Species Aster quiescens E.S.Burgess
- Species Aster quinquenervius Klatt accepted as Felicia quinquenervia (Klatt) Grau
- Species Aster quitensis Willd. ex Spreng.
- Species Aster racemosus Elliott accepted as Symphyotrichum racemosum (Elliott) G.L.Nesom
- Species Aster radicans (J.Rémy) Kuntze accepted as Haplopappus anthylloides Meyen & Walp.
- Species Aster radula Dryand.
- Species Aster radula Less.
- Species Aster radula Sol. ex Aiton accepted as Eurybia radula (Sol. ex Aiton) G.L.Nesom
- Species Aster radulinus A.Gray accepted as Eurybia radulina (A.Gray) G.L.Nesom
- Species Aster rafinesquii Kuntze accepted as Solidago shortii Torr. & A.Gray
- Species Aster ramosissimus Mill. accepted as Symphyotrichum pilosum (Willd.) G.L.Nesom
- Species Aster ramosus G.Don
- Species Aster ramosus K.Schum.
- Species Aster ramsbottomii Hand.-Mazz. accepted as Aster poliothamnus Diels
- Species Aster ramulosus Lindl.
- Species Aster ramulosus Nutt. accepted as Symphyotrichum ascendens (Lindl.) G.L.Nesom
- Species Aster ramulosus Lindl. accepted as Symphyotrichum falcatum var. falcatum (Lindl.) G.L.Nesom
- Species Aster ramulosus Labill. accepted as Olearia ramulosa (Labill.) Benth.
- Species Aster ramulosus Lindl. ex DC. accepted as Symphyotrichum falcatum (Lindl. ex Lindl.) G.L.Nesom
- Species Aster rani Kuntze
- Species Aster ranii Kuntze accepted as Olearia rani (A.Cunn.) Druce
- Species Aster ranunculoides Moench
- Species Aster rectifolius E.S.Burgess
- Species Aster recurvatus Spreng. accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster recurvatus Willd. accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster recurvatus Günther ex Nees accepted as Symphyotrichum tenuifolium (L.) G.L.Nesom
- Species Aster recurvatus Pursh accepted as Symphyotrichum tradescantii (L.) G.L.Nesom
- Species Aster reevesii A.Gray
- Species Aster reevesii (A.Gray) Bergmans accepted as Symphyotrichum ericoides (L.) G.L.Nesom
- Species Aster reflexus L. accepted as Polyarrhena reflexa subsp. reflexa (L.) Cass.
- Species Aster regalis Salisb. accepted as Callistephus chinensis (L.) Nees
- Species Aster regnellii Baker accepted as Symphyotrichum regnellii (Baker) G.L.Nesom
- Species Aster remyanus (Wedd.) Kuntze accepted as Haplopappus remyanus Wedd.
- Species Aster rengifoanus (J.Rémy) Kuntze accepted as Haplopappus rengifoanus J.Rémy
- Species Aster repens Kunth accepted as Oritrophium repens (Kunth) Cuatrec.
- Species Aster reptans Sessé & Moc. accepted as Osbertia stolonifera (DC.) Greene
- Species Aster resinotus Kuntze accepted as Ericameria nana Nutt.
- Species Aster reticulatus Pursh accepted as Oclemena reticulata (Pursh) G.L.Nesom
- Species Aster retinervius Kuntze accepted as Haplopappus diplopappus J.Rémy
- Species Aster retortus (DC.) Harv. accepted as Senecio retortus (DC.) Benth.
- Species Aster retroflexus A.Cunn. ex Hook.f.
- Species Aster retroflexus Lindl.
- Species Aster retroflexus Lindl. ex DC. accepted as Symphyotrichum retroflexum G.L.Nesom
- Species Aster retusus Ludlow
- Species Aster reversii Hort. ex Decne. accepted as Symphyotrichum ericoides (L.) G.L.Nesom
- Species Aster reversus Kuntze accepted as Haplopappus grindelioides (Less.) DC.
- Species Aster revolutus (Benth.) F.Muell. accepted as Olearia revoluta F.Muell. ex Benth.
- Species Aster rhomboideus Lindl. ex DC. accepted as Aster tataricus L.f.
- Species Aster richardii (Vatke) Kuntze accepted as Felicia dentata subsp. dentata (A.Rich.) Dandy
- Species Aster richardsonii Spreng. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster riciniatus E.S.Burgess accepted as Eurybia macrophylla (L.) Cass.
- Species Aster riddelii (Frank ex Frank) Kuntze accepted as Solidago riddellii Frank ex Riddell
- Species Aster riddellii (Frank) Kuntze
- Species Aster rigidulus Desf. accepted as Symphyotrichum puniceum (L.) Á.Löve & D.Löve
- Species Aster rigidulus Nees accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster rigidus (L.) Kuntze accepted as Solidago rigida L.
- Species Aster rigidus Moench accepted as Inula salicina L.
- Species Aster rigidus (Cass.) Soó accepted as Galatella sedifolia subsp. rigida (DC.) Greuter
- Species Aster rigidus L. accepted as Ionactis linariifolia (L.) Greene
- Species Aster riparius Kunth accepted as Arida riparia (Kunth) D.R.Morgan & R.L.Hartm.
- Species Aster riparius Nees accepted as Symphyotrichum peteroanum (Phil.) G.L.Nesom
- Species Aster rivesii Hort.
- Species Aster rivularis Sw.
- Species Aster rivularis Cass. ex Loudon
- Species Aster rivularis Less. accepted as Erigeron procumbens (Houst. ex Mill.) G.L.Nesom
- Species Aster robustus Nees
- Species Aster robustus (Makino) Yonek.
- Species Aster robynsianus Rousseau
- Species Aster robynsianus J.Rousseau accepted as Symphyotrichum robynsianum (J.Rousseau) Brouillet & Labrecque
- Species Aster rockianus Hand.-Mazz.
- Species Aster rolandii Shinners accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster roscidus E.S.Burgess ex Britton & A.Brown
- Species Aster roscidus E.S.Burgess
- Species Aster roseolus Rydb.
- Species Aster roseus Desf. accepted as Symphyotrichum novae-angliae (L.) G.L.Nesom
- Species Aster roseus M.Bieb. ex Steven accepted as Kemulariella rosea (Steven) Tamamsch.
- Species Aster rosmarinifolius Spreng. accepted as Chrysocoma obtusata (Thunb.) Ehr.Bayer
- Species Aster rosmarinifolius A.Cunn. ex DC. accepted as Olearia rosmarinifolia (DC.) Benth.
- Species Aster rosmarinifolius (DC.) F.Muell. accepted as Olearia rosmarinifolia (DC.) Benth.
- Species Aster rothrockii Kuntze accepted as Solidago spectabilis (D.C.Eaton) A.Gray
- Species Aster rotundifolius Thunb. accepted as Felicia amelloides (L.) Voss
- Species Aster roxburghii Hook.f. accepted as Commidendrum robustum (Roxb.) DC.
- Species Aster roylei Onno accepted as Erigeron multiradiatus (Lindl. ex DC.) Benth. & Hook.f.
- Species Aster ruber J.Forbes
- Species Aster rubicundus J.Forbes
- Species Aster rubiginosus (DC.) Kuntze
- Species Aster rubricaulis Lam. accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve
- Species Aster rubrotinctus S.F.Blake accepted as Dieteria bigelovii var. bigelovii (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster rufibarbis Harv. accepted as Felicia burkei (Harv.) L.Bolus
- Species Aster rufopappus Hayata accepted as Aster hispidus Thunb.
- Species Aster rugosus (Mill.) Kuntze accepted as Solidago rugosa Mill.
- Species Aster rugulosus Maxim.
- Species Aster ruoqiangensis Y.Wei & C.H.An
- Species Aster rupestris (Raf.) Kuntze accepted as Solidago rupestris Raf.
- Species Aster rupestris Kunth accepted as Diplostephium rupestre (Kunth) Wedd.
- Species Aster rupestris E.H.L.Krause accepted as Erigeron pulchellus Michx.
- Species Aster rupicola E.S.Burgess
- Species Aster rupicola H.Lév. & Vaniot accepted as Heteropappus rupicola (Vaniot & H.Lév.) Kitam.
- Species Aster rutaeodorus A.Cunn. ex DC. accepted as Olearia glandulosa (Labill.) Benth.
- Species Aster saboureaui Humbert accepted as Madagaster saboureaui (Humbert) G.L.Nesom
- Species Aster sabulosus E.S.Burgess
- Species Aster sachalinensis Kudô accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster sagei Phil.
- Species Aster sagittifolius Wedem. ex Willd. accepted as Symphyotrichum cordifolium (L.) G.L.Nesom
- Species Aster sagittifolius Elliott accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster salicifolius Lam.
- Species Aster salicifolius Nees
- Species Aster salicifolius accepted as Symphyotrichum ×salignum (Willd.) G.L.Nesom
- Species Aster salicifolius Richardson accepted as Symphyotrichum boreale (Torr. & A.Gray) Á.Löve & D.Löve
- Species Aster salicifolius Aiton accepted as Symphyotrichum praealtum (Poir.) G.L.Nesom
- Species Aster salicinus (L.) Scop. accepted as Inula salicina L.
- Species Aster salicinus Nees accepted as Symphyotrichum ×salignum (Willd.) G.L.Nesom
- Species Aster salignus L.
- Species Aster salignus Willd. accepted as Symphyotrichum ×salignum (Willd.) G.L.Nesom
- Species Aster salignus Schrad. accepted as Tripolium pannonicum subsp. tripolium (L.) Greuter
- Species Aster salinus Schrad.
- Species Aster salsuginosus Richardson ex R.Br.
- Species Aster salsuginosus Richardson accepted as Erigeron salsuginosus (Richardson ex R.Br.) A.Gray
- Species Aster salsuginosus Less. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster salsuginosus Hook. accepted as Erigeron peregrinus (Banks ex Pursh) Greene
- Species Aster salwinensis Onno
- Species Aster sampsonii (Hance) Hemsl.
- Species Aster sanczirii Kamelin & Gubanov
- Species Aster sandwicensis (A.Gray) Hieron. accepted as Aster squamatus (Spreng.) Hieron.
- Species Aster sanguineus Willd. ex Spreng. accepted as Symphyotrichum ciliolatum (Lindl.) Á.Löve & D.Löve
- Species Aster satonis (A.Gray) Howell
- Species Aster satsumensis Soejima
- Species Aster satureiaefolius Banks accepted as Pectis saturejoides (Mill.) Sch.Bip.
- Species Aster saundersii E.S.Burgess
- Species Aster savatieri Makino accepted as Miyamayomena savatieri (Makino) Kitam.
- Species Aster savianus Kuntze accepted as Solidago litoralis Savi
- Species Aster savii Arcang. accepted as Galatella linosyris (L.) Rchb.f.
- Species Aster saxatilis Novopokr.
- Species Aster saxatilis (J.Rémy) Kuntze accepted as Haplopappus saxatilis (J.Rémy) Reiche
- Species Aster saxatilis (Fernald) Blanch. accepted as Symphyotrichum tradescantii (L.) G.L.Nesom
- Species Aster saxicastelli J.J.N.Campb. & Medley accepted as Eurybia saxicastellii (J.J.N.Campb. & Medley) G.L.Nesom
- Species Aster saxomarinus Kom.
- Species Aster sayianus Nutt. accepted as Canadanthus modestus (Lindl.) G.L.Nesom
- Species Aster scaber Moench
- Species Aster scaber Elliott accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster scaber Thunb. accepted as Doellingeria scabra (Thunb.) Nees
- Species Aster scaberrimus Hayata
- Species Aster scaberrimus Less. accepted as Erigeron veracruzensis G.L.Nesom
- Species Aster scaberulus Miq. accepted as Aster ageratoides var. firmus (Diels) Hand.-Mazz.
- Species Aster scabricaulis Shinners accepted as Symphyotrichum puniceum var. scabricaule (Shinners) G.L.Nesom
- Species Aster scabridus (DC.) E.Mey. ex C.B.Clarke accepted as Felicia scabrida (DC.) Range
- Species Aster scabris Mill. accepted as Aster alpinus L.
- Species Aster scabrosus Bertol. accepted as Sericocarpus tortifolius (Michx.) Nees
- Species Aster scandens J.Jacq. ex Spreng. accepted as Ampelaster carolinianus (Walter) G.L.Nesom
- Species Aster scapigerus Ledeb.
- Species Aster scaposus (DC.) Kuntze accepted as Inulopsis scaposa (DC.) O.Hoffm.
- Species Aster scaposus Klatt accepted as Aster molliusculus (Lindl. ex DC.) C.B.Clarke
- Species Aster scepusiensis Kit. ex Kanitz accepted as Aster amellus subsp. bessarabicus (Bernh. ex Rchb.) Soó
- Species Aster scepusiensis Kit. accepted as Aster amellus L.
- Species Aster schaeferi Dinter accepted as Felicia filifolia subsp. schaeferi (Dinter) Grau
- Species Aster schaffneri Sch.Bip. ex S.D.Sundb. & A.G.Jones accepted as Symphyotrichum potosinum (A.Gray) G.L.Nesom
- Species Aster schistosus E.S.Steele accepted as Symphyotrichum schistosum (E.S.Steele) G.L.Nesom
- Species Aster schlechteri Compton accepted as Felicia filifolia subsp. schlechteri (Compton) Grau
- Species Aster schreberi Nees accepted as Eurybia schreberi (Nees) Nees
- Species Aster schumannii Kuntze accepted as Haplopappus schumannii (Kuntze) G.K.Br. & W.D.Clark
- Species Aster scoparius Nees accepted as Symphyotrichum tradescantii (L.) G.L.Nesom
- Species Aster scoparius (Kar. & Kir.) Kuntze accepted as Galatella scoparia (Kar. & Kir.) Novopokr.
- Species Aster scoparius DC. accepted as Symphyotrichum ericoides var. ericoides (L.) G.L.Nesom
- Species Aster scopiformis Kuntze accepted as Haplopappus velutinus J.Rémy
- Species Aster scopulorum A.Gray accepted as Ionactis alpina (Nutt.) Greene
- Species Aster scorpioides (L.) Scop. accepted as Doronicum glaciale (Wulfen) Nyman
- Species Aster scorzonerifolius Regel
- Species Aster scorzonerifolius (J.Rémy) Speg.
- Species Aster scribneri Rydb.
- Species Aster scrobiculatus (Nees) Kuntze accepted as Haplopappus scrobiculatus (Nees) DC.
- Species Aster scutiformis E.S.Burgess
- Species Aster secundiflorus Desf. accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster secundirameus Zeyh. ex Sch.Bip. accepted as Cotula nigellifolia var. nigellifolia (DC.) K.Bremer & Humphries
- Species Aster securiformis E.S.Burgess
- Species Aster sedifolius L. accepted as Galatella sedifolia (L.) Greuter
- Species Aster see-burejensis Tamamsch. accepted as Aster ageratoides Turcz.
- Species Aster sejaensis Kuntze accepted as Diplostephium haenkei (DC.) Wedd.
- Species Aster sekimotoi Makino
- Species Aster seliger Nees accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster sellowii Hieron. ex Malme
- Species Aster semiamplexicaulis (Makino) Makino ex Koidz.
- Species Aster semiamplexicaulis Makino
- Species Aster semidentatus Kuntze
- Species Aster semidentatus (Decne.) F.Muell. accepted as Olearia semidentata Decne.
- Species Aster semiprostratus (Grierson) H.Ikeda
- Species Aster sempervirens (L.) Kuntze accepted as Solidago sempervirens L.
- Species Aster senebierifolius Kuntze accepted as Haplopappus glutinosus Cass.
- Species Aster senecioides Franch.
- Species Aster serenoi Kuntze accepted as Ericameria watsonii (A.Gray) G.L.Nesom
- Species Aster sericeus (Less.) Nees accepted as Noticastrum sericeum (Less.) Less. ex Phil.
- Species Aster sericeus Vent. accepted as Symphyotrichum sericeum (Vent.) G.L.Nesom
- Species Aster sericocarpoides (Small) K.Schum. accepted as Doellingeria sericocarpoides Small
- Species Aster serotinus Willd. accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster serpentimontanus Tamamsch. accepted as Aster alpinus var. serpentimontanus (Tamamsch.)
- Species Aster serrata Anon.
- Species Aster serratifolius Schloss. & Vuk. accepted as Symphyotrichum ciliolatum (Lindl.) Á.Löve & D.Löve
- Species Aster serratus Thunb. accepted as Felicia serrata (Thunb.) Grau
- Species Aster serratus Lag. ex DC. accepted as Grindelia inuloides Willd.
- Species Aster serrulatus Harv. accepted as Aster harveyanus Kuntze
- Species Aster serrulatus (Greene) Frye & Rigg accepted as Eucephalus glaucescens (A.Gray) Greene
- Species Aster sessiliflorus (Hook.f.) F.Muell. accepted as Celmisia sessiliflora Hook.f.
- Species Aster sessilifolius Fisch. ex Steud.
- Species Aster setchuenensis Franch.
- Species Aster setiger Sessé & Moc.
- Species Aster setiger (Phil.) Kuntze accepted as Haplopappus pinnatifidus Nutt.
- Species Aster setosus Baker accepted as Apopyros corymbosus (Hook. & Arn.) G.L.Nesom
- Species Aster sextilis E.S.Burgess
- Species Aster shastensis (A.Gray) A.Gray accepted as Dieteria canescens var. shastensis (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster shennongjiaensis W.P.Li & Z.G.Zhang
- Species Aster sherriffianus Hand.-Mazz. accepted as Aster vestitus Franch.
- Species Aster shimadai (Kitam.) Nemoto accepted as Kalimeris shimadai (Kitam.) Kitam.
- Species Aster shortii Lindl. ex Hook.
- Species Aster shortii Lindl. accepted as Symphyotrichum shortii (Lindl.) G.L.Nesom
- Species Aster sibiricus Turcz. ex Torr. & A.Gray
- Species Aster sibiricus Lam.
- Species Aster sibiricus L. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster siemssenii F.Muell. accepted as Olearia viscidula (F.Muell.) Benth.
- Species Aster sikkimensis Hook.f.
- Species Aster sikkimmensis Hook.f. & Thomson
- Species Aster sikuensis W.W.Sm. & Farrer
- Species Aster silenifolius Turcz.
- Species Aster silenifolius Turcz. ex DC. accepted as Erigeron silenifolius (Turcz. ex Turcz.) Botsch.
- Species Aster simmondsii Small accepted as Symphyotrichum simmondsii (Small) G.L.Nesom
- Species Aster simplex Chang
- Species Aster simplex C.C.Chang accepted as Miyamayomena simplex (Hand.-Mazz.) Y.L.Chen
- Species Aster simplex accepted as Symphyotrichum subspicatum (Nees) G.L.Nesom
- Species Aster simplex Willd. accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster simulans Harv. accepted as Felicia hyssopifolia subsp. glabra (DC.) Grau
- Species Aster simulatus Small accepted as Symphyotrichum concolor var. concolor (L.) G.L.Nesom
- Species Aster sinensis Hoffm.
- Species Aster sinianus Hand.-Mazz.
- Species Aster sinoangustifolius Brouillet, Semple & Y. L. Chen
- Species Aster sinuatus A.Cunn. ex DC. accepted as Olearia quercifolia Sieber ex DC.
- Species Aster siskiyouensis A.Nelson & J.F.Macbr. accepted as Eucephalus glabratus (Greene) Greene
- Species Aster smallii Alexander
- Species Aster smithianus Hand.-Mazz. accepted as Kalimeris smithianus (Hand.-Mazz.) S.Y.Hu
- Species Aster sociabilis E.S.Burgess
- Species Aster sodiroi Hieron. accepted as Oritrophium limnophilum (Sch.Bip.) Cuatrec.
- Species Aster sodiroi Hieron. ex Sodiro accepted as Oritrophium limnophilum (Sch.Bip.) Cuatrec.
- Species Aster sohayakiensis Koidz.
- Species Aster solanderi Kuntze
- Species Aster solandri E.Forst. ex J.Forbes
- Species Aster solandri (Hook.f.) F.Muell. accepted as Olearia solandri (Hook.f.) Hook.f.
- Species Aster solidagineus Michx. accepted as Sericocarpus linifolius (L.) Britton, Sterns & Poggenb.
- Species Aster solidagineus Michx. ex Willd. accepted as Sericocarpus linifolius (L.) Britton, Sterns & Poggenb.
- Species Aster solidaginoides Pers. accepted as Sericocarpus linifolius (L.) Britton, Sterns & Poggenb.
- Species Aster sonderi F.Muell. accepted as Olearia grandiflora Hook.
- Species Aster sonomensis Greene
- Species Aster sonorae A.Gray accepted as Arida riparia (Kunth) D.R.Morgan & R.L.Hartm.
- Species Aster sonoriensis (A.Gray) Kuntze accepted as Xylothamia diffusa (Benth.) G.L.Nesom
- Species Aster sorrentini (Tod.) Lojac. accepted as Tripolium sorrentinoi (Tod.) Raimondo & Greuter
- Species Aster souliei Franch.
- Species Aster sparsiflorus Michx. accepted as Symphyotrichum dumosum (L.) G.L.Nesom
- Species Aster sparsiflorus (A.Gray) Kuntze accepted as Solidago velutina subsp. sparsiflora (A.Gray) Semple
- Species Aster sparsiflorus Pursh accepted as Symphyotrichum tenuifolium (L.) G.L.Nesom
- Species Aster spartioides C.B.Clarke accepted as Kalimeris altaica (Willd.) Nees ex Fisch.Mey. & Avé-Lall.
- Species Aster spatelliformis E.S.Burgess accepted as Symphyotrichum lateriflorum var. spatelliforme G.L.Nesom
- Species Aster spathularis Lag. ex Nees accepted as Grindelia inuloides Willd.
- Species Aster spathularis Steud. accepted as Inula salicina L.
- Species Aster spathularis Brouss. ex DC. accepted as Grindelia inuloides Willd.
- Species Aster spathulatus Lag. ex Nees
- Species Aster spathulatus Hort. ex Steud.
- Species Aster spathulatus Lindl. accepted as Symphyotrichum spathulatum (Lindl.) G.L.Nesom
- Species Aster spathulifolius Maxim.
- Species Aster speciosus Hornem. accepted as Eurybia spectabilis (Sol. ex Aiton) G.L.Nesom
- Species Aster speciosus (Nutt.) Kuntze accepted as Solidago speciosa Nutt.
- Species Aster spectabilis Dryand.
- Species Aster spectabilis Hook. & Arn.
- Species Aster spectabilis Willd. accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster spectabilis Sol. ex Aiton accepted as Eurybia spectabilis (Sol. ex Aiton) G.L.Nesom
- Species Aster spectatissimus F.Muell. accepted as Celmisia spectabilis subsp. spectabilis Hook.f.
- Species Aster sphaerotus Y.Ling accepted as Erigeron panduratus C.C.Chang
- Species Aster spicatus Nees
- Species Aster spinosus Benth. accepted as Chloracantha spinosa (Bentham) G. L. Nesom
- Species Aster spinuliger (A.Gray) Kuntze accepted as Xanthisma spinulosum (Pursh) D.R.Morgan & R.L.Hartm.
- Species Aster spinulosus Chapm. accepted as Eurybia spinulosa (Chapm.) G.L.Nesom
- Species Aster spithamaeus Greene
- Species Aster spithamaeus (M.A.Curtis ex A.Gray) Kuntze accepted as Solidago spithamaea M.A.Curtis ex A.Gray
- Species Aster spurius Willd. accepted as Symphyotrichum novae-angliae (L.) G.L.Nesom
- Species Aster squamatus (Spreng.) Hieron.
- Species Aster squamatus (Spreng.) Hieron. ex Sodiro
- Species Aster squarrosulus Nees accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster squarrosus G.L.Nesom
- Species Aster squarrosus Banks ex Steud.
- Species Aster squarrosus Walter accepted as Symphyotrichum walteri (Alexander) G.L.Nesom
- Species Aster squarrosus All. accepted as Inula spiraeifolia L.
- Species Aster squarrosus Sessé & Moc. accepted as Grindelia inuloides Willd.
- Species Aster staehelinoides (DC.) Kuntze accepted as Nardophyllum lanatum (Meyen) Cabrera
- Species Aster standleyi Davidson accepted as Xylorhiza cognata (H.M.Hall) T.J.Watson
- Species Aster staticifolius Franch. accepted as Aster batangensis Bureau & Franch.
- Species Aster steeleorum Shinners accepted as Symphyotrichum laeve var. laeve (L.) Á.Löve & D.Löve
- Species Aster steetzii F.Muell. accepted as Olearia strigosa (Steetz) Benth.
- Species Aster stelliger (J.Rémy) Kuntze accepted as Haplopappus stelliger J.Rémy
- Species Aster stellulatus Labill. accepted as Olearia stellulata (Labill.) DC.
- Species Aster stenactis E.H.L.Krause accepted as Erigeron annuus (L.) Desf.
- Species Aster stenomeres A.Gray accepted as Ionactis stenomeres (A.Gray) Greene
- Species Aster stenophyllus Lindl.
- Species Aster stenophyllus Lindl. ex DC. accepted as Symphyotrichum lanceolatum var. lanceolatum
- Species Aster stenophyllus (A.Gray) Kuntze accepted as Nestotus stenophyllus (A.Gray) R.P.Roberts, Urbatsch & Neubig
- Species Aster stenotus Kuntze accepted as Tonestus pygmaeus (Torr. & A.Gray) A.Nelson
- Species Aster sternbergii Kuntze accepted as Haplopappus angustifolius (DC.) Reiche
- Species Aster stewardensis Kuntze accepted as Haplopappus angustifolius (DC.) Reiche
- Species Aster stilettiformis E.S.Burgess accepted as Eurybia divaricata (L.) G.L.Nesom
- Species Aster stolonifer (DC.) Kuntze accepted as Osbertia stolonifera (DC.) Greene
- Species Aster stracheyi Hook.f.
- Species Aster striatus Champ. ex Benth.
- Species Aster stricticaulis (Torr. & A.Gray) Rydb. accepted as Symphyotrichum ericoides (L.) G.L.Nesom
- Species Aster strictus Pursh
- Species Aster strictus Wender. accepted as Galatella sedifolia subsp. dracunculoides (Lam.) Greuter
- Species Aster strictus Poir. accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster strictus (Aiton) Kuntze accepted as Solidago stricta Aiton
- Species Aster strigosus lichtenst. ex Harv. & Sond.
- Species Aster strigosus (A.Spreng.) Licht. ex Harv. accepted as Felicia ovata (Thunb.) Compton
- Species Aster strigosus Thunb. accepted as Amellus strigosus subsp. strigosus (Thunb.) Less.
- Species Aster stuartii (F.Muell.) F.Muell. accepted as Olearia stuartii (F.Muell.) F.Muell. ex Benth.
- Species Aster stuebelii Hieron. accepted as Diplostephium stuebelii (Hieron.) Cuatrec.
- Species Aster subasper Lindl. ex Hook.
- Species Aster subasper Lindl. accepted as Symphyotrichum praealtum var. subasperum (Lindl.) G.L.Nesom
- Species Aster subcaerulens S.Moore
- Species Aster subcaudatus Rydb.
- Species Aster subcoerulea S.Moore accepted as Aster tongolensis Franch.
- Species Aster subcoeruleus S.Moore
- Species Aster subcymosus Bernh. ex Nees accepted as Eurybia macrophylla (L.) Cass.
- Species Aster subgeminatus (Fernald) B.Boivin accepted as Symphyotrichum subgeminatum (Fernald) G.L.Nesom
- Species Aster subgriseus Rydb. accepted as Symphyotrichum ascendens (Lindl.) G.L.Nesom
- Species Aster subinteger E.P.Bicknell
- Species Aster subinteger E.P.Bicknell ex E.S.Burgess
- Species Aster subintegerrimus Trautv.
- Species Aster subintegerrimus Ostenf.
- Species Aster subintegerrimus (Trautv.) Ostenf. & Resvoll accepted as Eurybia sibirica subsp. subintegerrima (Trautv.) Greuter
- Species Aster sublitoralis (Torr. & A.Gray) Kuntze accepted as Solidago latissimifolia Mill.
- Species Aster suborbiculatus (Colenso) Kuntze accepted as Olearia arborescens (G.Forst.) Cockayne & Laing
- Species Aster subracemosus Rydb.
- Species Aster subsalignus Rydb.
- Species Aster subsessilis E.S.Burgess accepted as Symphyotrichum patens var. patentissimum (Lindl. ex Lindl.) G.L.Nesom
- Species Aster subspathulatus Rydb. accepted as Symphyotrichum sericeum (Vent.) G.L.Nesom
- Species Aster subspicatus Nees accepted as Symphyotrichum subspicatum (Nees) G.L.Nesom
- Species Aster subtropicus Morong accepted as Aster squamatus (Spreng.) Hieron.
- Species Aster subulatus Michx.
- Species Aster subulatus Hort. ex Steud.
- Species Aster succulentus Gilib. accepted as Tripolium pannonicum subsp. tripolium (L.) Greuter
- Species Aster suffruticosus (Nutt.) Kuntze accepted as Ericameria suffruticosa (Nutt.) G.L.Nesom
- Species Aster sugimotoi Kitam.
- Species Aster sulznerae Small accepted as Symphyotrichum simmondsii (Small) G.L.Nesom
- Species Aster suputinicus Tamamsch. accepted as Aster ageratoides Turcz.
- Species Aster surculosus Michx. accepted as Eurybia surculosa (Michx.) G.L.Nesom
- Species Aster sutschanensis Kom. accepted as Aster ageratoides Turcz.
- Species Aster sylvestris E.S.Burgess accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster sylvicola E.S.Burgess
- Species Aster sympodialis E.S.Burgess
- Species Aster tagetinus (Greene) S.F.Blake accepted as Machaeranthera tagetina Greene
- Species Aster taiwanensis Kitam.
- Species Aster takasagomontanus Sasaki
- Species Aster taliangshanensis Y.Ling
- Species Aster tanacetifolius Kunth accepted as Machaeranthera tanacetifolia (Kunth) Nees
- Species Aster tansaniensis W.Lippert
- Species Aster taoyuenensis S.S.Ying
- Species Aster tarbagatensis (K.Koch) Merxm. accepted as Galatella tatarica (Less.) Novopokr.
- Species Aster tardiflorus Willd.
- Species Aster tardiflorus L. accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster tataricus L.f.
- Species Aster tataricus Turcz. accepted as Eurybia sibirica (L.) G.L.Nesom
- Species Aster taxifolius L. accepted as Zyrphelis taxifolia (L.) Nees
- Species Aster techinensis Y.Ling
- Species Aster tenebrosus E.S.Burgess ex Britton & A.Brown
- Species Aster tenebrosus E.S.Burgess accepted as Eurybia divaricata (L.) G.L.Nesom
- Species Aster tenellus L.
- Species Aster tenellus Thunb.
- Species Aster tenellus L. accepted as Felicia tenella subsp. tenella (L.) Nees
- Species Aster tener (DC.) Harv. accepted as Felicia tenera (DC.) Grau
- Species Aster tenerrimus Less. accepted as Tetramolopium tenerrimum (Less.) Nees
- Species Aster tenue Kellogg
- Species Aster tenuicaulis (C.Mohr) E.S.Burgess accepted as Symphyotrichum patens var. gracile (Hook.) G.L.Nesom
- Species Aster tenuiculus W.P.C.Barton
- Species Aster tenuiculus Barton
- Species Aster tenuiculus Bart.
- Species Aster tenuifolius Elliott
- Species Aster tenuifolius Willd.
- Species Aster tenuifolius Nees
- Species Aster tenuifolius L. accepted as Symphyotrichum tenuifolium (L.) G.L.Nesom
- Species Aster tenuipes Makino
- Species Aster tenuipes (Wiegand) Shinners accepted as Symphyotrichum lateriflorum var. tenuipes (Wiegand) G.L.Nesom
- Species Aster tenuis Less. ex Ledeb.
- Species Aster tenuissimus Dunn
- Species Aster tephrodes (A.Gray) S.F.Blake accepted as Dieteria asteroides var. asteroides Torr.
- Species Aster teretifolius (Sond.) F.Muell. accepted as Olearia teretifolia (Sond.) F.Muell. ex Benth.
- Species Aster terrae-novae (Torr. & A.Gray) Kuntze accepted as Solidago uliginosa Nutt.
- Species Aster texanus Burgess
- Species Aster texanus E.S.Burgess accepted as Symphyotrichum drummondii var. texanum (E.S.Burgess) G.L.Nesom
- Species Aster thermalis M.E.Jones
- Species Aster thomsonii C.B.Clarke
- Species Aster thunbergii Farrer
- Species Aster thyrsiflorus Hoffm. accepted as Symphyotrichum novi-belgii (L.) G.L.Nesom
- Species Aster thyrsodeus (E.Mey.) Kuntze accepted as Solidago macrophylla Banks ex Pursh
- Species Aster tianmenshanensis G. J.Zhang & T.G. Gao
- Species Aster tibeticus Hook.f. accepted as Aster flaccidus var. flaccidus Bunge
- Species Aster tientschwanensis Hand.-Mazz.
- Species Aster tilesii Wichstr. accepted as Erigeron peregrinus (Banks ex Pursh) Greene
- Species Aster tinctorius Wallr. accepted as Aster amellus L.
- Species Aster tolmatschevii Tamamsch. accepted as Aster alpinus subsp. tolmatschevii (Tamamsch.) Á.Löve & D.Löve
- Species Aster tolmieanus (A.Gray) Kuntze accepted as Solidago missouriensis Nutt.
- Species Aster tomentellus (Greene) S.F.Blake
- Species Aster tomentellus (Greene) Frye & Rigg accepted as Eucephalus tomentellus (Greene) Greene
- Species Aster tomentellus Hook. & Arn. accepted as Corethrogyne filaginifolia (Hook. & Arn.) Nutt.
- Species Aster tomentosus Schrad.
- Species Aster tomentosus Wendland
- Species Aster tomentosus Schrad. ex J.C.Wendl. accepted as Olearia tomentosa (Wendl.) DC.
- Species Aster tonglingensis G.J. Zhang & T.G. Gao
- Species Aster tonglingensis G.J.Zhang & T.G.Gao
- Species Aster tongolensis Franch.
- Species Aster torreyi Porter
- Species Aster torreyi Kuntze accepted as Solidago drummondii Torr. & A.Gray
- Species Aster tortifolius (Torr. & A.Gray) A.Gray accepted as Xylorhiza tortifolia (Torr. & A.Gray) Greene
- Species Aster tortifolius Michx. accepted as Sericocarpus tortifolius (Michx.) Nees
- Species Aster townshendii Hook.f. accepted as Dieteria bigelovii var. bigelovii (A.Gray) D.R.Morgan & R.L.Hartm.
- Species Aster trachytectus Phil. accepted as Diplostephium meyenii (Sch.Bip.) Wedd.
- Species Aster trachyticus Phil. accepted as Diplostephium meyenii (Sch.Bip.) Wedd.
- Species Aster tradescanti Nees
- Species Aster tradescanti Hoffm.
- Species Aster tradescanti L.
- Species Aster tradescanti Michx.
- Species Aster tradescantii L. accepted as Symphyotrichum tradescantii (L.) G.L.Nesom
- Species Aster traillii (Kirk) Kuntze accepted as Olearia traillii Kirk
- Species Aster transiens F.Muell. accepted as Celmisia bellidioides Hook.f.
- Species Aster traversii Kuntze
- Species Aster traversii (F.Muell.) F.Muell. accepted as Olearia traversii (F.Muell.) Hook.f.
- Species Aster triangularis (E.S.Burgess) E.S.Burgess accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster trianthus Vell. accepted as Calea triantha (Vell.) Pruski
- Species Aster tricapitatus Vaniot
- Species Aster tricephalus C.B.Clarke
- Species Aster trichanthus Hand.-Mazz. accepted as Kalimeris longipetiolata (C.C.Chang)
- Species Aster trichocarpus (DC.) Druce accepted as Aster striatus Champ. ex Benth.
- Species Aster trichoneurus Y.Ling
- Species Aster tricolor Spreng. accepted as Felicia elongata (Thunb.) O.Hoffm. ex O.Hoffm.
- Species Aster tricolor (Nees) Harv. accepted as Felicia elongata (Thunb.) O.Hoffm. ex O.Hoffm.
- Species Aster trifurcatus Banks & Sol. ex Hook.f. accepted as Senecio trifurcatus (G.Forst.) Less.
- Species Aster trigonicus E.S.Burgess
- Species Aster trilineatus Sch.Bip. ex Klatt accepted as Symphyotrichum trilineatum (Sch.Bip. ex Klatt) G.L.Nesom
- Species Aster trinervifolius Less. accepted as Galatella sedifolia subsp. dracunculoides (Lam.) Greuter
- Species Aster trinervis Desf.
- Species Aster trinervis Pers.
- Species Aster trinervis Ruiz & Pav. ex DC. accepted as Lycoseris trinervis (D.Don) S.F.Blake
- Species Aster trinervis (Pers.) Nees accepted as Galatella sedifolia subsp. rigida (DC.) Greuter
- Species Aster trinervis Ruiz & Pav. ex D.Don accepted as Lycoseris trinervis subsp. trinervis
- Species Aster trinervius Roxb. ex Roxb.
- Species Aster trinervius Roxb. ex D.Don
- Species Aster trinervius Gilib. accepted as Aster amellus L.
- Species Aster tripolium L. accepted as Tripolium pannonicum subsp. tripolium (L.) Greuter
- Species Aster tripolium Walter
- Species Aster truellius E.S.Burgess accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster tsarungensis (Grierson) Y.Ling
- Species Aster tsuneoi (Tatew.) Miyabe & Tatew. accepted as Erigeron thunbergii var. angustifolius (Tatew.) Hara
- Species Aster tuberosum Less.
- Species Aster tuberosus Less. ex Baker accepted as Apopyros corymbosus (Hook. & Arn.) G.L.Nesom
- Species Aster tubiflorus F.Muell.
- Species Aster tubuliflorus (Sond. & F.Muell. ex Sond.) F.Muell. accepted as Olearia tubuliflora Benth.
- Species Aster tubulosus (Kitam.) Kitam. accepted as Aster ageratoides Turcz.
- Species Aster tugana
- Species Aster tuganianus Albov accepted as Kemulariella tuganiana (Albov) Tamamsch.
- Species Aster tuganus Albov
- Species Aster turbinatus S.Moore
- Species Aster turbinellus Lindl. accepted as Symphyotrichum turbinellum (Lindl.) G.L.Nesom
- Species Aster turczaninowii F.Muell. accepted as Olearia imbricata (Turcz.) Benth.
- Species Aster turkestanicus Franch.
- Species Aster tweediei (Hook. & Arn.) Herter accepted as Leptostelma tweediei (Hook. & Arn.) D.J.N.Hind & G.L.Nesom
- Species Aster tweedyi Rydb. accepted as Symphyotrichum foliaceum var. canbyi (A.Gray) G.L.Nesom
- Species Aster uchiyamae Nakai
- Species Aster uchiyamae Nakai
- Species Aster ujiinsularis Kitam.
- Species Aster uliginosus J.M.Wood & M.S.Evans accepted as Solidago uliginosa Nutt.
- Species Aster uliginosus (Nutt.) Kuntze accepted as Solidago uliginosa Nutt.
- Species Aster ulmarius E.S.Burgess
- Species Aster ulmifolius (Muhl. ex Willd.) Kuntze accepted as Solidago ulmifolia Muhl. ex Willd.
- Species Aster umbachii Rydb.
- Species Aster umbellatus Mill. accepted as Doellingeria umbellata (Mill.) Nees
- Species Aster umbelliformis E.S.Burgess
- Species Aster umbraticus E.Sheld.
- Species Aster umbraticus Sheldon
- Species Aster umbrosus (Benth.) Govaerts accepted as Erigeron umbrosus (Kar. & Kir.) Boiss.
- Species Aster unalaschkensis Less. accepted as Erigeron peregrinus (Banks ex Pursh) Greene
- Species Aster unalaschkensis Less. ex Bong. accepted as Erigeron salsuginosus (Richardson ex R.Br.) A.Gray
- Species Aster uncinatus (Phil.) Kuntze accepted as Haplopappus uncinatus Phil.
- Species Aster unctuosus Steud.
- Species Aster underwoodii Rydb.
- Species Aster undulatus Moench
- Species Aster undulatus Elliott
- Species Aster undulatus L. accepted as Symphyotrichum undulatum (L.) G.L.Nesom
- Species Aster uniflorus (L.) E.H.L.Krause
- Species Aster uniflorus Moench
- Species Aster uniflorus Michx. accepted as Oclemena nemoralis (Aiton) Greene
- Species Aster uniflorus (Bunge ex DC.) B.Fedtsch. accepted as Aster limonifolius (Less.) B.Fedtsch.
- Species Aster uniflorus (Hook.) Kuntze accepted as Pyrrocoma uniflora (Hook.) Greene
- Species Aster uniformis E.S.Burgess
- Species Aster uniligulatus (DC.) Kuntze accepted as Solidago uliginosa Nutt.
- Species Aster urophyllus Lindl.
- Species Aster urophyllus Lindl. ex DC. accepted as Symphyotrichum urophyllum (Lindl. ex Lindl.) G.L.Nesom
- Species Aster ursinus E.S.Burgess
- Species Aster ursinus Lév. & Vaniot accepted as Aster indicus L.
- Species Aster ursinus H.Lév. accepted as Kalimeris indica var. indica
- Species Aster vaccinus Piper
- Species Aster vagans E.Forst. ex J.Forbes
- Species Aster vahlii Gaudich.
- Species Aster vahlii (Gaudich.) Hook. & Arn. accepted as Symphyotrichum vahlii (Gaudich.) G.L.Nesom
- Species Aster vaillantii All. accepted as Inula helvetica Weber
- Species Aster vallicola Greene accepted as Symphyotrichum spathulatum var. intermedium (A.Gray) G.L.Nesom
- Species Aster valparaisanus Kuntze accepted as Haplopappus pulchellus (Bertero) DC.
- Species Aster vaniotii H.Lév. accepted as Aster tricapitatus Vaniot
- Species Aster variabilis Sessé & Moc. accepted as Erigeron longipes DC.
- Species Aster vaseyi (A.Gray) Kuntze accepted as Chrysothamnus vaseyi (A.Gray) Greene
- Species Aster vaurealis Rousseau
- Species Aster vaurealis J.Rousseau accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster veitchianus Hutch. & J. R. Drumm. ex G. J. Zhang & T. G. Gao
- Species Aster vellereus Franch. accepted as Inula nervosa Wall. ex DC.
- Species Aster velutinosus Y.Ling
- Species Aster velutinus (DC.) Kuntze accepted as Solidago velutina DC.
- Species Aster venetus Kuntze accepted as Isocoma veneta (Kunth) Greene
- Species Aster venosus Kuntze accepted as Haplopappus diplopappus J.Rémy
- Species Aster venustus Fourc. accepted as Felicia linifolia (Harv.) Grau
- Species Aster venustus M.E.Jones accepted as Xylorhiza venusta (M.E.Jones) A.Heller
- Species Aster vernalis Engelm. ex E.S.Burgess accepted as Symphyotrichum oolentangiense (Riddell) G.L.Nesom
- Species Aster vernicifluus F.Muell. accepted as Damnamenia vernicosa (Hook.f.) Given
- Species Aster vernicosus (Hook.f.) F.Muell. accepted as Damnamenia vernicosa (Hook.f.) Given
- Species Aster vernus (M.A.Curtis ex Torr. & A.Gray) Kuntze accepted as Solidago verna M.A.Curtis ex Torr. & A.Gray
- Species Aster vernus L. accepted as Erigeron vernus (L.) Torr. & A.Gray
- Species Aster versicolor Hort. ex Steud.
- Species Aster versicolor Willd. accepted as Symphyotrichum versicolor (Willd.) G.L.Nesom
- Species Aster verutifolius Alexander accepted as Eurybia paludosa (Sol. ex Aiton) G.L.Nesom
- Species Aster vestitus Franch.
- Species Aster vialis (Bradshaw) S.F.Blake accepted as Eucephalus vialis Bradshaw
- Species Aster villarsii E.H.L.Krause accepted as Erigeron atticus Vill.
- Species Aster villiger Kuntze accepted as Haplopappus diplopappus J.Rémy
- Species Aster villosus Thunb. accepted as Felicia muricata subsp. muricata (Thunb.) Nees
- Species Aster villosus (L.) Sch.Bip. accepted as Galatella villosa (L.) Rchb.f.
- Species Aster villosus (L.) J.Wagner accepted as Galatella villosa (L.) Rchb.f.
- Species Aster villosus Michx. accepted as Symphyotrichum pilosum var. pilosum (Willd.) G.L.Nesom
- Species Aster vilmorinii Franch. accepted as Aster diplostephioides (DC.) Benth. ex C.B.Clarke
- Species Aster vimineus Nees
- Species Aster vimineus Willd.
- Species Aster vimineus Lam. accepted as Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve
- Species Aster violaceus Greene
- Species Aster violaris E.S.Burgess
- Species Aster violaris E.S.Burgess ex Britton & A.Brown
- Species Aster virgatus Nees accepted as Symphyotrichum puniceum (L.) Á.Löve & D.Löve
- Species Aster virgatus Elliott accepted as Symphyotrichum patens var. patens (Aiton) G.L.Nesom
- Species Aster virgatus Moench accepted as Symphyotrichum tenuifolium (L.) G.L.Nesom
- Species Aster virgineus Nees accepted as Symphyotrichum novi-belgii var. novi-belgii (L.)
- Species Aster virginiensis Shinners
- Species Aster virgularis E.S.Burgess
- Species Aster viridis Nees ex E.S.Burgess
- Species Aster viridis Nees
- Species Aster viscidiflorus Kuntze accepted as Chrysothamnus viscidiflorus (Hook.) Nutt.
- Species Aster viscidulus (Makino) Makino
- Species Aster viscifluus F.Muell. accepted as Celmisia viscosa Hook.f.
- Species Aster viscosus Labill. accepted as Olearia viscosa (Labill.) Benth.
- Species Aster vittatus E.S.Burgess
- Species Aster vvedenskyi Bondarenko
- Species Aster walpersianus Nees
- Species Aster walteri Alexander ex Small
- Species Aster walteri Alexander accepted as Symphyotrichum walteri (Alexander) G.L.Nesom
- Species Aster wardii (A.Gray) Kuntze accepted as Haplopappus fremontii A.Gray
- Species Aster warmingii Baker accepted as Apopyros warmingii (Baker) G.L.Nesom
- Species Aster wasatchensis (M.E.Jones) S.F.Blake accepted as Herrickia wasatchensis (M.E.Jones) Brouillet
- Species Aster watsonii A.Gray accepted as Erigeron watsonii (A.Gray) Cronquist
- Species Aster wattii Piper
- Species Aster wattii C.B.Clarke accepted as Aster trinervius var. wattii (C.B.Clarke) Grierson
- Species Aster welshii Cronquist accepted as Symphyotrichum welshii (Cronquist) G.L.Nesom
- Species Aster westae Fourc. accepted as Felicia westae (Fourc.) Grau
- Species Aster whitneyi (A.Gray) Kuntze accepted as Hazardia whitneyi (A.Gray) Greene
- Species Aster willdenovii E.Forst. ex J.Forbes
- Species Aster williamsii Rydb.
- Species Aster willkommii Sch.Bip.
- Species Aster willkommii Sch.Bip. ex Willk.
- Species Aster wilsonii Greene
- Species Aster wilsonii Rydb. accepted as Symphyotrichum ciliolatum (Lindl.) Á.Löve & D.Löve
- Species Aster wimmeri Sloboda.
- Species Aster woldeni Rydb.
- Species Aster woldenii Rydb.
- Species Aster wolfii Favrat accepted as Aster alpinus L.
- Species Aster woodhousei Wooton accepted as Brachyactis woodhousei (Wooton) Wooton & Standl.
- Species Aster woodii Klatt accepted as Felicia quinquenervia (Klatt) Grau
- Species Aster wootonii (Greene) Greene accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom
- Species Aster worcesterensis Kuntze accepted as Polyarrhena imbricata (DC.) Grau
- Species Aster woroschilovii Zdor. & Schapoval
- Species Aster wrightii A.Gray accepted as Xylorhiza wrightii (A.Gray) Greene
- Species Aster xerophilus (F.Muell.) F.Muell. accepted as Olearia xerophila (F.Muell.) F.Muell. ex Benth.
- Species Aster xylophyllus Klatt accepted as Aster harveyanus subsp. harveyanus Kuntze
- Species Aster xylorhiza (Nutt.) Torr. & A.Gray accepted as Xylorhiza glabriuscula Nutt.
- Species Aster yakushimensis (Kitam.) Soejima & Yahara
- Species Aster yamatsutae Matsuda
- Species Aster yamatsutanus Kitag. accepted as Galatella dahurica DC.
- Species Aster yamazutae Matsuda accepted as Aster veitchianus Hutch. & J. R. Drumm. ex G. J. Zhang & T. G. Gao
- Species Aster yangtzensis Migo accepted as Kalimeris indica var. indica
- Species Aster yokusaianus Kitam. accepted as Aster savatieri var. pygmaeus Makino
- Species Aster yokusaianus Kitam. ex H.Hara accepted as Aster savatieri var. pygmaeus Makino
- Species Aster yomena (Kitam.) Honda
- Species Aster yomena Makino
- Species Aster yosemitanus (A.Gray) Greene accepted as Symphyotrichum spathulatum var. yosemitanum (A.Gray) G.L.Nesom
- Species Aster yoshinaganus (Kitam.) Mot.Ito & Soejima
- Species Aster yoshinaganus Kitam.
- Species Aster yukonensis Cronquist accepted as Symphyotrichum yukonense (Cronquist) G.L.Nesom
- Species Aster yunnanensis Franch.
- Species Aster zayuensis Y.L.Chen accepted as Duhaldea eupatorioides (Wall. ex DC.) Steetz
- Species Aster zeyheri Less. accepted as Felicia zeyheri subsp. zeyheri (Less.) Nees
- Species Aster zosterifolius Reiche accepted as Aster vahlii var. tenuifolius (Phil.) Cabrera
- Species Aster zuluensis W.Lippert
- Genus Asteromoea Blume accepted as Aster L.
- Genus Asterothamnus Novopokr. (7)
- Genus Bellidiaster Dumort. accepted as Aster L.
- Genus Bindera Raf. accepted as Aster L.
- Genus Brachyaster Ambrosi accepted as Aster L.
- Genus Callistephus Cass. (1)
- Genus Cardiagyris G.L. Nesom (10)
- Genus Chaochienchangia G.L. Nesom (1)
- Genus Chlamydites J.R.Drumm.
- Genus Cordiofontis G.L. Nesom (5)
- Genus Deinosmos Raf. accepted as Aster L.
- Genus Diplactis Raf. accepted as Aster L. (1)
- Genus Galatea Cass. accepted as Aster L.
- Genus Geothamnus G.L. Nesom (1)
- Genus Griersonia G.L. Nesom (3)
- Genus Helodeaster G.L. Nesom (3)
- Genus Heteropappus Less. (12)
- Genus Iteroloba G.L. Nesom (1)
- Genus Kalimeris (Cass.) Cass. (16)
- Genus Kemulariella Tamamsch. (6)
- Genus Metamyriactis G.L. Nesom (6)
- Genus Miyamayomena Kitam. (5)
- Genus Myriactis Less. (16)
- Genus Neobrachyactis Brouillet (4)
- Genus Psychrogeton Boiss. (18)
- Genus Rhinactinidia Novopokr. (1)
- Genus Rhynchospermum Reinw. ex Reinw. (1)
- Genus Sheareria S.Moore (1)
- Genus Sinobouffordia G.L. Nesom (2)
- Genus Sinosidus G.L. Nesom (8)
- Genus Tibetiodes G.L. Nesom (27)
- Genus Turczaninovia DC.
- Genus Yonglingia G.L. Nesom (2)
- Genus Zollingeria Sch.Bip. accepted as Aster L.
- Subtribe Astranthiinae G.L.Nesom (37)
- Subtribe Baccharidinae Less. (684)
- Subtribe Bellidinae Willk. (55)
- Subtribe Bellidinae Benth. & Hook.f. accepted as Bellidinae Willk.
- Subtribe Bellidinae (Cass. ex D.Don) G.L.Nesom accepted as Bellidinae Willk.
- Subtribe Boltoniinae G.L.Nesom (12)
- Subtribe Brachycominae G.L. Nesom accepted as Brachyscominae G.L.Nesom
- Subtribe Brachyscominae G.L.Nesom (410)
- Subtribe Celmisiinae Saldivia (88)
- Subtribe Chaetopappinae G.L.Nesom (14)
- Subtribe Chamaegerinae G.L. Nesom (6)
- Subtribe Chiliotrichinae Bonif. (29)
- Subtribe Chrysopsidinae G.L.Nesom (75)
- Subtribe Conyzinae Horan. (623)
- Subtribe Conyzinae Benth. & Hook.f. accepted as Conyzinae Horan. (2)
- Subtribe Denekiinae G.L.Nesom (1)
- Subtribe Doellingeriinae G.L. Nesom (13)
- Subtribe Egletinae G.L. Nesom (11)
- Subtribe Erigeroneae Gren. & Godr. accepted as Conyzinae Horan.
- Subtribe Eschenbachiinae G.L. Nesom (60)
- Subtribe Feliciinae G.L.Nesom accepted as Homochrominae Benth.
- Subtribe Formaniinae G.L.Nesom (1)
- Subtribe Geissolepinae G.L.Nesom (1)
- Subtribe Grangeinae Benth. (51)
- Subtribe Grangeinae Benth. & Hook.f. accepted as Grangeinae Benth.
- Subtribe Gutierreziinae G.L.Nesom (69)
- Subtribe Heterochrominae Benth. accepted as Asterinae (Cass.) Dumort.
- Subtribe Heterochrominae Benth. & Hook.f.
- Subtribe Heterothalaminae Endl. accepted as Baccharidinae Less.
- Subtribe Hinterhuberinae Cuatrec. accepted as Baccharidinae Less.
- Subtribe Homochrominae Benth. (166)
- Subtribe Homochrominae Benth. & Hook.f.
- Subtribe Ionactinae G.L. Nesom (6)
- Subtribe Iranoasterinae G.L.Nesom
- Subtribe Lageniferinae G.L.Nesom accepted as Lagenophorinae G.L. Nesom
- Subtribe Lagenophorinae Y.R.Ling
- Subtribe Lagenophorinae G.L. Nesom (28)
- Subtribe Machaerantherinae G.L.Nesom (283)
- Subtribe Madagasterinae G.L. Nesom (18)
- Subtribe Mairiinae G.L. Nesom (3)
- Subtribe Nannoglottidinae G.L. Nesom (3)
- Subtribe Oclemininae G.L.Nesom (4)
- Subtribe Oritrophiinae G.L. Nesom (21)
- Subtribe Pentachaetinae G.L.Nesom (45)
- Subtribe Podocominae G.L.Nesom accepted as Baccharidinae Less.
- Subtribe Printziinae G.L. Nesom (6)
- Subtribe Pteroniinae G.L. Nesom (72)
- Subtribe Solidagininae O.Hoffm. (197)
- Subtribe Symphyotrichinae G.L.Nesom (111)
- Genus ×Asterigeron Tzvelev
- Genus ×Heterokalimeris Kitam.
- Genus Albinia
- Genus Alix Comm. ex DC. accepted as Psiadia Jacq. ex Willd.
- Genus Allittia P.S.Short accepted as Brachyscome Cass. (2)
- Genus Amellus P.Browne accepted as Melanthera Rohr
- Genus Amellus Adans. accepted as Amellus L.
- Genus Amellus Ortega ex Willd. accepted as Amellus L.
- Genus Ammodia Nutt. accepted as Heterotheca Cass.
- Genus Amphirhapis DC. accepted as Duhaldea DC.
- Genus Aphantochaeta A.Gray accepted as Chaetopappa DC.
- Genus Aplactis Raf. accepted as Solidago L.
- Genus Arida (R.L.Hartm.) D.R.Morgan & R.L.Hartm. accepted as Leucosyris Greene (6)
- Genus Asteridium Engelm. ex Walp. accepted as Chaetopappa DC.
- Genus Asteropterus Vaill. accepted as Printzia Cass.
- Genus Bellidiopsis (DC.) Spach
- Genus Bellidium Bertol. accepted as Bellis L.
- Genus Belliopsis Pomel accepted as Bellis L.
- Genus Biotia DC. accepted as Eurybia (Cass.) Gray (1)
- Genus Borkonstia Ignatov accepted as Rhinactinidia Novopokr.
- Genus Botryadenia Fisch. & C.A.Mey. accepted as Myriactis Less.
- Genus Bourdonia Greene accepted as Chaetopappa DC.
- Genus Brachyachyris Spreng. accepted as Gutierrezia Lag.
- Genus Brachychaeta Torr. & A.Gray accepted as Solidago L.
- Genus Brachycome Gaudich. accepted as Vittadinia A.Rich.
- Genus Brachycome Cass. accepted as Brachyscome Cass.
- Genus Brachyridium Meisn. accepted as Lepidophyllum Cass.
- Genus Brachyris Nutt. accepted as Gutierrezia Lag.
- Genus Brachystephium Less. accepted as Brachyscome Cass.
- Genus Brephocton Raf. accepted as Rochonia DC.
- Genus Brintonia Greene accepted as Solidago L.
- Genus Cacotanis Raf. accepted as Boltonia L'Hér.
- Genus Callistemma Cass. accepted as Callistephus Cass.
- Genus Calycium Elliott accepted as Heterotheca Cass.
- Genus Centauridium Torr. & A.Gray accepted as Xanthisma DC.
- Genus Chaetanthera Nutt. accepted as Chaetopappa DC.
- Genus Chaetaphora Nutt. accepted as Chaetopappa DC.
- Genus Cheiroloma F.Muell. accepted as Calotis R.Br.
- Genus Chihuahuana Urbatsch & R.P.Roberts accepted as Medranoa Urbatsch & R.P.Roberts
- Genus Chondrophora Raf. ex Porter & Britton accepted as Bigelowia DC.
- Genus Chondrophora Raf. accepted as Bigelowia DC.
- Genus Chroilema bernhardi ex Bernh. accepted as Haplopappus Cass.
- Genus Collomia Sieber ex Steud.
- Genus Commidendron Lem. accepted as Commidendrum Burch. ex DC.
- Genus Conyzella Rupr.
- Genus Crinita Moench accepted as Galatella (Cass.) Cass.
- Genus Crinitaria Cass. accepted as Galatella (Cass.) Cass. (1)
- Genus Dasiorima Raf. accepted as Solidago subsect. Maritimae (Torr. & A.Gray) G.L.Nesom
- Genus Dectis Raf. accepted as Commidendrum Burch. ex DC.
- Genus Diotosperma A.Gray accepted as Ceratogyne Turcz.
- Genus Diplocoma D.Don ex D.Don accepted as Heterotheca Cass.
- Genus Diplogon Raf. accepted as Chrysopsis (Nutt.) Elliott
- Genus Diplopappus Cass. accepted as Chrysopsis (Nutt.) Elliott
- Genus Diplostelma A.Gray accepted as Chaetopappa DC.
- Genus Diplostelma Raf. accepted as Chaetopappa DC.
- Genus Distasis DC. accepted as Chaetopappa DC.
- Genus Dolichogyne DC. accepted as Nardophyllum (Hook. & Arn.) Hook. & Arn.
- Genus Doria Fabr. accepted as Solidago L. (1)
- Genus Dysaster H.Rob. & V.A.Funk accepted as Diplostephium Kunth
- Genus Elachothamnos DC. accepted as Minuria DC.
- Genus Elphegea Cass. accepted as Psiadia Jacq. ex Willd.
- Genus Emphysopus Hook.f. accepted as Solenogyne Cass.
- Genus Eremiastrum A.Gray accepted as Monoptilon Torr. & A.Gray
- Genus Eriocarpum Nutt. accepted as Xanthisma DC.
- Genus Eurybiopsis DC. accepted as Minuria DC.
- Genus Exothamnus D.Don ex Hook. accepted as Haplopappus Cass.
- Genus Eyselia Rchb.
- Genus Frappieria Cordem. accepted as Psiadia Jacq. ex Willd.
- Genus Frivaldia Endl. accepted as Microglossa DC.
- Genus Galatea (Cass.) Cass. ex Less. accepted as Galatella (Cass.) Cass.
- Genus Glycideras DC.
- Genus Glycyderas Cass. accepted as Psiadia Jacq. ex Willd.
- Genus Glyphia Cass. accepted as Psiadia Jacq. ex Willd.
- Genus Goniopogon Turcz. accepted as Calotis R.Br.
- Genus Greenella A.Gray accepted as Gutierrezia Lag.
- Genus Grindeliopsis Sch.Bip. accepted as Xanthocephalum Willd.
- Genus Guenthera Regel accepted as Xanthocephalum Willd.
- Genus Gymnaster Kitam. accepted as Miyamayomena Kitam. (1)
- Genus Haenelia Walp.
- Genus Haplodiscus (Benth.) Phil. accepted as Haplopappus Cass. (1)
- Genus Haxtonia A.Cunn. accepted as Olearia Moench
- Genus Hecatactis F. v. Mueller ex Mattf. accepted as Lagenophora Cass.
- Genus Heleastrum DC.
- Genus Hemiachyris DC. accepted as Gutierrezia Lag.
- Genus Hemibaccharis S.F.Blake accepted as Archibaccharis Heering
- Genus Henricia Cass. accepted as Psiadia Jacq. ex Willd.
- Genus Hesperastrum A.Gray accepted as Machaeranthera Nees
- Genus Hesperodoria Greene accepted as Chrysothamnus Nutt.
- Genus Heteractis DC. accepted as Gymnostephium Less.
- Genus Heterochaeta DC. accepted as Erigeron L.
- Genus Heyfeldera Sch.Bip.
- Genus Hisutsua DC.
- Genus Homochroma DC. accepted as Zyrphelis Cass.
- Genus Homopappus Nutt. accepted as Pyrrocoma Hook.
- Genus Isopappus Torr. & A.Gray accepted as Croptilon Raf.
- Genus Kaulfussia Nees accepted as Felicia Cass.
- Genus Keerlia DC. accepted as Aphanostephus DC.
- Genus Krylovia Schischk. accepted as Rhinactinidia Novopokr.
- Genus Laestadia Kunth accepted as Laestadia Kunth ex Less.
- Genus Lagenithrix G.L.Nesom accepted as Pappochroma Raf.
- Genus Lagenopappus G.L.Nesom accepted as Pappochroma Raf.
- Genus Leiachenis Raf. accepted as Eurybia (Cass.) Gray
- Genus Leioligo Raf. accepted as Solidago L.
- Genus Lepiactis Raf. accepted as Solidago subsect. Maritimae (Torr. & A.Gray) G.L.Nesom
- Genus Leptilon Raf. accepted as Conyza Less.
- Genus Leptocoma Less.
- Genus Leptothamnus DC.
- Genus Leucelene Greene accepted as Chaetopappa DC.
- Genus Leucopsidium Charpent. ex DC. accepted as Aphanostephus DC.
- Genus Leucopsis (DC.) Baker accepted as Noticastrum DC.
- Genus Linosyris Cass. accepted as Chrysocoma L. (2)
- Genus Luteidiscus H.St.John accepted as Tetramolopium Nees
- Genus Macronema Nutt. accepted as Ericameria Nutt.
- Genus Marsea Adans. accepted as Conyza Less.
- Genus Martinia Vaniot
- Genus Mauchia Kuntze
- Genus Mesoligus Raf. accepted as Symphyotrichum Nees
- Genus Microcalia A.Rich. accepted as Lagenophora Cass.
- Genus Microgynella Grau accepted as Microgyne Less.
- Genus Microtrichia DC. accepted as Grangea Adans.
- Genus Munychia Cass. accepted as Felicia Cass.
- Genus Musteron Raf. accepted as Erigeron L.
- Genus Neonesomia Urbatsch & R.P.Roberts accepted as Medranoa Urbatsch & R.P.Roberts (1)
- Genus Neosyris Greene accepted as Llerasia Triana
- Genus Notopappus Klingenb. accepted as Grindelia Willd. (5)
- Genus Novopokrovskia Tzvelev accepted as Psychrogeton Boiss.
- Genus Oligactis Raf. accepted as Sericocarpus Nees
- Genus Oreastrum Greene accepted as Oreostemma Greene
- Genus Paleaepappus Cabrera accepted as Nardophyllum (Hook. & Arn.) Hook. & Arn. (1)
- Genus Pembertonia P.S.Short accepted as Brachyscome Cass. (1)
- Genus Phalacroloma Cass. accepted as Erigeron L.
- Genus Piofontia Cuatrec. accepted as Linochilus Benth.
- Genus Plagiochilus Lindl.
- Genus Platystephium Gardner accepted as Egletes Cass.
- Genus Podocoma R.Br. accepted as Ixiochlamys F.Muell. & Sond.
- Genus Podopappus Hook. & Arn. accepted as Podocoma Cass.
- Genus Polyactidium DC. accepted as Erigeron L.
- Genus Polyactis Less. accepted as Erigeron L.
- Genus Polygyne Phil. accepted as Plagiocheilus Arn. ex DC.
- Genus Pseudolinosyris Novopokr. accepted as Crinitaria Cass. (3)
- Genus Psiadia Jacq. accepted as Psiadia Jacq. ex Willd.
- Genus Psiadiella Humbert accepted as Psiadia Jacq. (1)
- Genus Pterophora L. accepted as Pteronia L.
- Genus Pterophorus Boehm. accepted as Pteronia L.
- Genus Remya Hillebr. accepted as Remya Hillebr. ex Benth. & Hook.f.
- Genus Rhinactina Less. accepted as Rhinactinidia Novopokr.
- Genus Rhynchospermum Lindl. accepted as Rhynchospermum Reinw.
- Genus Sarcanthemum Cass. accepted as Psiadia Jacq.
- Genus Selloa Spreng. accepted as Gymnosperma Less. (2)
- Genus Shawia J.R.Forst. & G.Forst. accepted as Olearia Moench
- Genus Sideranthus Nutt. ex Nees accepted as Xanthisma DC.
- Genus Sideranthus Nutt. accepted as Sideranthus Nutt. ex Nees
- Genus Solidago Mill.
- Genus Steetzia Sond. accepted as Olearia Moench
- Genus Steiractis DC. accepted as Olearia Moench
- Genus Stenactis Cass. accepted as Erigeron L. (1)
- Genus Stereosanthus Franch. accepted as Nannoglottis Maxim.
- Genus Terranea Colla accepted as Erigeron L.
- Genus Trimorpha Cass. accepted as Erigeron L.
- Genus Trimorphaea Cass. accepted as Erigeron L.
- Genus Unamia Greene accepted as Oligoneuron Small
- Genus Vanclevea Greene accepted as Chrysothamnus Nutt.
- Genus Vierhapperia Hand.-Mazz. accepted as Nannoglottis Maxim.
- Genus Virgulaster Semple accepted as Symphyotrichum Nees
- Genus Virgulus Raf. accepted as Symphyotrichum Nees
- Genus Wardaster J.Small accepted as Aster L. (1)
- Genus Weberaster Á.Löve & D.Löve accepted as Eurybia (Cass.) Gray
- Genus Woodvillea DC. accepted as Erigeron L.
- Genus Wyomingia A.Nelson accepted as Erigeron L.
- Genus Xanthocoma Kunth accepted as Xanthocephalum Willd.
- Genus Xerobius Cass. accepted as Egletes Cass.
- Genus Xylovirgata Urbatsch & R.P.Roberts accepted as Medranoa Urbatsch & R.P.Roberts
- Tribe Athroismeae Panero (82)
- Tribe Bahieae B.G.Baldwin (86)
- Tribe Bellideae Cass. ex D.Don accepted as Astereae Cass.
- Tribe Bellieae DC. ex Godr. accepted as Bellidinae Willk.
- Tribe Bidentideae Godr. accepted as Coreopsideae Lindl.
- Tribe Calenduleae Cass. (121)
- Tribe Chaenactideae B.G.Baldwin (21)
- Tribe Chrysthellinae Ryding & K.Bremer accepted as Chrysanthellinae Ryding & K.Bremer
- Tribe Coreopsideae Lindl. (527)
- Tribe Cotuleae Lowe accepted as Anthemideae Cass.
- Tribe Doroniceae Panero (39)
- Tribe Eupatorieae Cass. (2 752)
- Tribe Feddeeae Pruski, Herrera, Anderb. & Franc.-Ort.
- Tribe Gnaphalieae Cass. ex Lecoq & Juill. (2 268)
- Tribe Helenieae Lindl. (138)
- Tribe Heliantheae Cass. (1 728)
- Tribe Inuleae Cass. (665)
- Tribe Iveae Rydb. accepted as Heliantheae Cass.
- Tribe Madieae Jeps. (228)
- Tribe Millerieae Lindl. (478)
- Tribe Neurolaeneae Rydb. (188)
- Tribe Perityleae B.G.Baldwin (78)
- Tribe Plucheeae Anderb. accepted as Inuleae Cass.
- Tribe Polymnieae (H.Rob.) Panero (8)
- Tribe Senecioneae Cass. (3 803)
- Tribe Tageteae Cass. (267)
- Tribe Ursinieae H.Rob. & Brettell accepted as Anthemideae Cass.
- Subtribe Nannoglottidinae Y.R.Ling accepted as Nannoglottidinae G.L. Nesom
- Genus Callilepis DC. (5)
- Genus Zoutpansbergia Hutch. accepted as Callilepis DC.
- Subfamily Baccharidoideae Burmeist. accepted as Asteroideae (Cass.) Lindl.
- Subfamily Barnadesioideae (Benth. & Hook.) K.Bremer & R.K.Jansen accepted as Barnadesioideae (D.Don) Bremer & Jansen
- Subfamily Barnadesioideae (D.Don) Bremer & Jansen (88)
- Subfamily Carduoideae Cass. ex Sweet (3 634)
- Subfamily Cichorioideae Chevall. (6 817)
- Subfamily Corymbioideae Panero & V.A.Funk (10)
- Subfamily Dicomoideae S. Ortiz (113)
- Subfamily Famatinanthoideae S.E.Freire, Ariza & Panero (1)
- Subfamily Gochnatioideae (Benth. & Hook.f.) Panero & V.A.Funk (103)
- Subfamily Gymnarrhenoideae Panero & V.A.Funk (2)
- Subfamily Hecastocleidoideae Panero & V.A.Funk (1)
- Subfamily Lactucoideae (Cass.) Lindl. accepted as Cichorioideae Chevall.
- Subfamily Lactucoideae Solbrig accepted as Cichorioideae Chevall.
- Subfamily Mutisioideae (Cass.) Lindl. (632)
- Subfamily Pertyoideae Panero & V.A.Funk (99)
- Subfamily Stifftioideae (D.Don) Panero (45)
- Subfamily Vernonioideae B.L.Turner ex R.K.Jansen & Stuessy accepted as Vernonioideae Lindl.
- Subfamily Vernonioideae Lindl. (2 357)
- Subfamily Wunderlichioideae Panero & V.A.Funk (42)
- Genus ×Anthisma
- Genus ×Anthocephalum
- Genus ×Chrysaboltonia
- Genus Absynthium G.Gaertn., B.Mey. & Scherb.
- Genus Acanthosonchus Don ex Hoffm.
- Genus Acarphaea Harv., Gray & ex.A.Gray
- Genus Achyrobaccharis Sch.Bip. ex Walp.
- Genus Achyrocoma Post & Kuntze
- Genus Achyrophorus Vaill. accepted as Hypochaeris L. (4)
- Genus Achyrostephus Kunze ex Rchb.
- Genus Acrolinium Engl.
- Genus Actispermum Raf.
- Genus Adenochaena Steud.
- Genus Adenochaena DC.
- Genus Adenoselen Spach
- Genus Aetheorrhiza Rchb.
- Genus Agalma Steud.
- Genus Aganippea Moc. ex Sessé ex DC. accepted as Jaegeria Kunth
- Genus Agathea Endl.
- Genus Agathomeris Laun.
- Genus Ageratiopsis Sch.Bip. ex Benth. accepted as Ageratina Spach
- Genus Aglaodendron J.Rémy
- Genus Agnesia Zuloaga & Judz.
- Genus Ailotheca Hemsl.
- Genus Aimorra Raf.
- Genus Ainsliea Kuntze
- Genus Alcinia Kunth
- Genus Aliconia Herrera
- Genus Allendea La Llave & Lex. accepted as Liabum Adans.
- Genus Alloeospermum Spreng.
- Genus Alloizonium Walp.
- Genus Aloiozonium Lindl.
- Genus Alymnia Neck. ex Spach
- Genus Amblycarpum Lem.
- Genus Amblyopelis Steud.
- Genus Ambraria Cruse
- Genus Ammanthus Boiss. & Heldr.
- Genus Amoleiachyris Sch.Bip.
- Genus Amphipappus Torr. & A.Gray
- Genus Anactis (Cass. ex DC.) Spach
- Genus Andriala Decne.
- Genus Andromachia Humb.
- Genus Anemonospermos Möhring
- Genus Anemonospermum Comm. ex Steud.
- Genus Anisorhamphus Endl.
- Genus Anisorrhamphus Rchb.
- Genus Anonymos Walter
- Genus Anthe-matricaria Geisenh. ex Domin
- Genus Anthemi-matricaria P.Fourn.
- Genus Anthochytrum Rchb. accepted as Crepis L.
- Genus Anticona E.Linares, J.Campos & A.Galán
- Genus Antitrixia Decaisne
- Genus Aplochlamis Steud.
- Genus Aptilon Raf.
- Genus Aquilula G.L.Nesom
- Genus Arachnopogon Berg ex Haberl
- Genus Archaetogeron Greenm.
- Genus Archanthemis Lo Presti & Oberpr.
- Genus Arctotheca Wendl.
- Genus Argyranthus Neck.
- Genus Argyrocome Breyne
- Genus Arnicula Kuntze
- Genus Arraschkoolia Sch.Bip. ex Hochst.
- Genus Arthemisia Neck.
- Genus Artimisia Roxb.
- Genus Asaemia Harv. ex Benth.
- Genus Ascaridia Rchb.
- Genus Aschenbornia Schauer accepted as Calea L.
- Genus Asiris Anonymous
- Genus Astartoseris N.Kilian, Hand, Hadjik., Christodoulou & Bou Dagh.-Kharr.
- Genus Asterago Everett
- Genus Asteridia N.T.Burb.
- Genus Asterigeron Tzvelev
- Genus Asteriscus Siegesb.
- Genus Asteromaea DC.
- Genus Athalmus Neck.
- Genus Atheolaena Rchb.
- Genus Atractylia Rchb.
- Genus Attractilis Hall. ex Scop.
- Genus Aucheria Steud.
- Genus Autunesia O.Hoffm.
- Genus Balladonia P.S.Short (1)
- Genus Barattia A.Gray & Engelm.
- Genus Barbeya Albov
- Genus Barckhausenia Menke
- Genus Barkhusenia Hoppe
- Genus Barrattia A.Gray & Engelm. ex A.Gray accepted as Simsia Pers.
- Genus Barroetia Post & Kuntze
- Genus Bartolia Adans. accepted as Tridax L.
- Genus Bastera J.F.Gmel.
- Genus Bastia Steud.
- Genus Behrinia Sieber ex Steud.
- Genus Bellidiastrum Vaill.
- Genus Bellidistrum Rchb.
- Genus Bembecodium Lindl.
- Genus Bennetia DC.
- Genus Berarda "Vill."St-Lager
- Genus Berckheya Pers.
- Genus Berinia Brignol.
- Genus Bernardia Endl.
- Genus Bertholetia Rchb.
- Genus Bertilia Cron
- Genus Bethencourtia Choisy
- Genus Binectaria Forssk.
- Genus Bizanilla J.Rémy
- Genus Blanchea Boiss.
- Genus Bojera Steud.
- Genus Bowmannia Gardner accepted as Trixis P.Browne
- Genus Brachioglottis Desportes
- Genus Brachyachaenium Baker accepted as Dicoma Cass.
- Genus Brachycladus Wittstein
- Genus Brachyglottis Forst.
- Genus Brachyoglotis Lam.
- Genus Brachyoglottis Scop.
- Genus Brachyrrhamphus Wittstein
- Genus Bracteantha Anderb.
- Genus Breteuillia Buc'hoz
- Genus Breteuillia Buc'hoz ex DC.
- Genus Buphthalmum Mill.
- Genus Cabralia F. von Paula von Schrank
- Genus Cacalia Burm.
- Genus Calendella Kuntze
- Genus Calimeris Nees
- Genus Callias Cass.
- Genus Calophthalmum Rchb.
- Genus Caltha Tourn. ex Adans.
- Genus Calycosorus Endl.
- Genus Calymnandra Lindl.
- Genus Campylochinium Endl.
- Genus Caputia B.Nord. & Pelser
- Genus Carelia Fabr. accepted as Ageratum L.
- Genus Carelia Möhring
- Genus Carelia Cav.
- Genus Carnutia Baker accepted as Melampodium L.
- Genus Carpezium Gouan
- Genus Catanance St.-Lag.
- Genus Catyona Lindl.
- Genus Centroclinion Orb.
- Genus Cephalopterum T.Post & Kuntze
- Genus Ceratogyna T.Post & Kuntze
- Genus Cereopsis Blanco
- Genus Cervana Endl.
- Genus Chaenolobus Small
- Genus Chaetantera Less.
- Genus Chaethymenia Endl.
- Genus Chaetophora Nutt. ex DC.
- Genus Chaetophora Schrank
- Genus Chakiatella DC.
- Genus Chalarium Poit. ex DC.
- Genus Chamaemelum Adans.
- Genus Chamissomenia Kuntze accepted as Schlechtendalia Less.
- Genus Chaptalia Royle
- Genus Chareis N.T.Burb.
- Genus Chersodoma Phil. & Cabrera
- Genus Chicorium Dumort.
- Genus Childsia Childs
- Genus Chilodia R.Br. accepted as Wulffia Neck.
- Genus Chiroloma T.Post & Kuntze
- Genus Chlaotrachelus Hook.f.
- Genus Chone Dulac
- Genus Chrisanthemum Neck. accepted as Chrysanthemum L.
- Genus Chrysaboltonia Arends
- Genus Chrysanthemoides Tourn. ex Medik.
- Genus Chrysocome St.-Lag.
- Genus Chrysogonum L. & F.Br.
- Genus Chrysopelta Tausch
- Genus Claotrachelus Zoll. & Moritz ex Zoll. accepted as Vernonia Schreb.
- Genus Clariona Spreng.
- Genus Clarionea Cass. accepted as Perezia Lag.
- Genus Clarionia D.Don accepted as Perezia Lag.
- Genus Cleistanthium Kunze
- Genus Cleithria Steud.
- Genus Clomenolepis Cass.
- Genus Cnenamum Tausch
- Genus Coelestina Hill
- Genus Coelestinia Endl.
- Genus Coenotus Benth. & Hook.f.
- Genus Colonnea Endl.
- Genus Colycea Fern.Casas & Susanna accepted as Centaurea L.
- Genus Conisa Desf. ex Steud.
- Genus Coniza Neck.
- Genus Conopsis Nutt. ex Less. accepted as Coreopsis L.
- Genus Conysa Adans.
- Genus Conysa Burm.f.
- Genus Conyza Hill
- Genus Conyzella Fabric. accepted as Conyza Less.
- Genus Conyzoides Tourn. ex DC.
- Genus Coriopsis Post & Kuntze
- Genus Coronocarpus Schumach.
- Genus Cosmus Pers. accepted as Cosmos Cav. (1)
- Genus Cotyla Kuntze & Post accepted as Cotula Tourn. ex L.
- Genus Covola Neck. ex Raf.
- Genus Cremocephalium Miq.
- Genus Crepidospermum Benth. & Hook.f.
- Genus Criscianthus Grossi & J.N.Nakaj.
- Genus Crossocephalum Britten
- Genus Crossolepsis N.T.Burb.
- Genus Cryptodia Sch.Bip.
- Genus Cryptopetalum Cass. accepted as Pectis L.
- Genus Cryptopetalum DC.
- Genus Ctenosperma F.Muell. ex Pfeiff.
- Genus Culcitum N.T.Burb.
- Genus Cupidone Lemaire
- Genus Cyclolepsis Endl.
- Genus Cyclopis Guill.
- Genus Cylindrachne Rchb.
- Genus Cyrethrum Boiss.
- Genus Dalea P.Browne accepted as Critonia P.Browne
- Genus Damatras Rchb.
- Genus Damatrias Rchb.
- Genus Delilea Kuntze
- Genus Delwiensia W.A.Weber & R.C.Wittmann
- Genus Dendrocacalia (Nakai) Nakai
- Genus Dendroviguiera E.E.Schill. & Panero
- Genus Deneckia Sch.Bip.
- Genus Denekea Dinter
- Genus Denneckia Steud.
- Genus Desmocephalus Benth. & Hook.f.
- Genus Dewildemania O.Hoffm. ex De Wild.
- Genus Diaspanthus Kitam.
- Genus Diatonta Walp. accepted as Bidens L.
- Genus Diatosperma Mueller Hal.
- Genus Diatosperma Müll.Berol.
- Genus Dichaeta Sch.Bip. accepted as Macvaughiella R.M.King & H.Rob.
- Genus Dicrocephala Royle
- Genus Diospermum Hook.f.
- Genus Diotis Schreb.
- Genus Diplopapus Raf.
- Genus Diplostylis Sond.
- Genus Diplothria Walp.
- Genus Disynanthes Rchb.
- Genus Disynapheia Steud.
- Genus Dithrichum DC.
- Genus Dolicholasium Spreng.
- Genus Dolicotheca Benth. & Hook.f.
- Genus Doria Adans.
- Genus Doroboea DC.
- Genus Dracopsis Cass. accepted as Rudbeckia L.
- Genus Duguldea Meisn.
- Genus Duhaldia Sch.Bip.
- Genus Dysinanthus Raf. ex DC.
- Genus Dysodea Borkh. accepted as Crepis L.
- Genus Dysodia DC.
- Genus Dysodia Spreng.
- Genus Ecliptica Rumph.
- Genus Edwardsia Endl.
- Genus Eizaguirrea J.Rémy
- Genus Electranthera Mesfin, D.J.Crawford & Pruski
- Genus Eleutheranthera Poit. ex Bosc
- Genus Elvina Steud.
- Genus Emelia Wight
- Genus Enchelya Lem.
- Genus Enchydra F.Muell.
- Genus Engelmannia Torr. & A.Gray
- Genus Englemannia A.Gray & ex.Nutt.
- Genus Enula Neck.
- Genus Epalthes Walp.
- Genus Epilasia Benth. & Hook.f.
- Genus Epilatoria Comm. ex Steud.
- Genus Epilepsis Lindl.
- Genus Erechthites Less.
- Genus Ericentrodea Blake, Sherff & Sherff
- Genus Eriocarpha Cass. accepted as Montanoa Cerv.
- Genus Erioclepis Fourr.
- Genus Eriocoryna Steud.
- Genus Erytheremia Endl.
- Genus Espletia Steud.
- Genus Eualcida Hemsl.
- Genus Eucalia Raeusch.
- Genus Eupatoriophalacron Adans.
- Genus Euphrosine Endl.
- Genus Euphrosinia Rchb.
- Genus Eurybia (Cass.) Cass. (1)
- Genus Euthamia Elliott
- Genus Eyselia Reichb. accepted as Egletes Cass.
- Genus Faberia Hemsl. ex Forb. & Hemsl.
- Genus Feea Kuntze
- Genus Filfia Holub
- Genus Fivaldia Walp.
- Genus Fleurotia Rchb.
- Genus Fornea Steud.
- Genus Frageria Delile ex Steud.
- Genus Frankia Steud. ex Steud.
- Genus Frankoeria Steud.
- Genus Freemannia Steud.
- Genus Frivaldzkia Rchb.
- Genus Gaillarda St.-Lag.
- Genus Gaillardia Fouger.: Biddulph
- Genus Galactella Raf.
- Genus Galardia Lam.
- Genus Galasia W.D.J.Koch
- Genus Galinsogaea Himpel accepted as Galinsoga Ruiz & Pav.
- Genus Galinsogaea Zucc.
- Genus Galinsogea Willd. accepted as Galinsoga Ruiz & Pav.
- Genus Galinsoja Roth accepted as Galinsoga Ruiz & Pav.
- Genus Galinzoga Dumort.
- Genus Galisongea Willd.
- Genus Gallinsoga St.Hil. accepted as Galinsoga Ruiz & Pav.
- Genus Gallinsoga J.St.-Hil.
- Genus Gamazygis Pritz.
- Genus Garaleum Sch.Bip.
- Genus Garcillasoa Post & Kuntze
- Genus Gareilassa Walp.
- Genus Garulium Bartl.
- Genus Gazaniopsis C.Huber
- Genus Gazzania
- Genus Geblera Kitag. accepted as Crepidifolium Sennikov
- Genus Geigera Less.
- Genus Gemmaria Noronha
- Genus Geracium Mössler accepted as Crepis L.
- Genus Gerbera Gronov.
- Genus Gerbera Cass.
- Genus Gerberia Cass.
- Genus Ginura Vidal y Soler
- Genus Ginura S.Vidal
- Genus Gnaphalium Adans.
- Genus Gnaphalodes Tourn. ex Adans.
- Genus Golionema "S.Wats." ex O.Hoffm.
- Genus Gomesia La Llave
- Genus Gomezia Benth. & Hook.f.
- Genus Gonzalezia E.E.Schill. & Panero
- Genus Gortera Hill
- Genus Grammartheon Rchb.
- Genus Grantia Griff.
- Genus Greenmaniella Sharp
- Genus Guandiola Steud.
- Genus Guardiola Cerv. ex Bonpl.
- Genus Guntheria Benth. & Hook.f.
- Genus Guzmannia F.Phil.
- Genus Gymnarrhea Steud.
- Genus Gymnema Endl.
- Genus Gymnoloma Ker Gawl.
- Genus Gymnostyles Raf.
- Genus Gymnoxis Steud.
- Genus Gymostyles Willd.
- Genus Gyneteria Spreng.
- Genus Gynoxis Rchb.
- Genus Haberlea Pohl ex Baker
- Genus Hacub Boehm.
- Genus Haegiela P.S.Short
- Genus Haenslera Steud.
- Genus Hainanecio Y.Liu & Q.E.Yang
- Genus Halea L. accepted as Eupatorium Tourn. ex L.
- Genus Hamalium Hemsl.
- Genus Hapalochlamys Kuntze
- Genus Hapalochlamys Rchb.
- Genus Hapalostephium D.Don accepted as Crepis L.
- Genus Hapalostephium D.Don ex Sweet
- Genus Hapalus Endl.
- Genus Haplopappus Endl.
- Genus Haradjania Rech.f.
- Genus Harpachaena Bunge accepted as Acanthocephalus Kar. & Kir.
- Genus Harpalyce D.Don
- Genus Harpocarpus Endl. accepted as Acanthocephalus Kar. & Kir.
- Genus Harrisonia Neck.
- Genus Hartwrightia A.Gray
- Genus Havanella Kuntze
- Genus Haxtonia Caley ex G.Don
- Genus Hecatactis F.Muell.
- Genus Hectorea DC.
- Genus Hedraiophyllum Less. ex Steud.
- Genus Hedypnois Schreb.
- Genus Heiseria E.E.Schill. & Panero
- Genus Helemonium Steud.
- Genus Heleneum Buckley
- Genus Helenia Mill.
- Genus Helenia Zinn
- Genus Heleniastrum Mill.
- Genus Heleniastrum Kuntze
- Genus Helenomoium Willd. ex DC. accepted as Heliopsis Pers.
- Genus Helianthemum Gray
- Genus Helichryson
- Genus Helicta Less.
- Genus Heliochroa A.Gray
- Genus Helipteron St.-Lag.
- Genus Helmentia J.St.-Hil.
- Genus Helminta Willd.
- Genus Helminthia DC.
- Genus Helminthion St.-Lag.
- Genus Helminthoteca Vaill. ex Juss.
- Genus Helminthotheca Vaill. ex Boehm.
- Genus Heloseris Rchb. ex Steud.
- Genus Hemilepis Schltdl. accepted as Leontodon L.
- Genus Hemilepis Kunze
- Genus Hemiptilium A.Gray accepted as Stephanomeria Nutt.
- Genus Hemolepis Hort. ex E.Vilm.
- Genus Henanthus Less
- Genus Henslera Rchb.
- Genus Heocarphus Phil.
- Genus Heraclea Hill
- Genus Herbichia Zaw.
- Genus Herbichia Zaw. ex Guill.
- Genus Herotium Steud.
- Genus Hersilea Klotzsch
- Genus Hertia Neck.
- Genus Hesperoseris Skottsb. accepted as Dendroseris D.Don
- Genus Heteracantha Link ex Steud.
- Genus Heteracea Steud.
- Genus Heteranthus Bonpl. ex Cass. accepted as Perezia Lag.
- Genus Heterodonta Nutt. ex Benth. & Hook.f.
- Genus Heterolaena Sch.Bip. ex Benth. & Hook.f. accepted as Chromolaena DC.
- Genus Heteromorpha Viv. ex Coss.
- Genus Heteropleura Sch.Bip. accepted as Hieracium Tourn. ex L.
- Genus Heterorachis Sch.Bip.
- Genus Heterospermum Willd. accepted as Heterosperma Cav.
- Genus Hieraceum Hoppe
- Genus Hierachium Hill
- Genus Hieraciastrum Heist. ex Fabr.
- Genus Hieracioides Fabr.
- Genus Hieracion St.-Lag.
- Genus Hieracum
- Genus Hierapicra Kuntze
- Genus Hingcha Roxb.
- Genus Hinghstonia Steud.
- Genus Hinterhubera Sch.Bip. accepted as Chrysanthellum Rich.
- Genus Hinterhubera Sch.Bip. ex Hochst. accepted as Chrysanthellum Rich.
- Genus Hinterhubera Sch.Bip.
- Genus Hiorthia Neck.
- Genus Hiortia Juss.
- Genus Hipochaeris Nocca
- Genus Hipochoeris Neck.
- Genus Hippia L.f. accepted as Cotula Tourn. ex L.
- Genus Hippophaestum Gray
- Genus Hisutua
- Genus Hochstettera Spach
- Genus Hohenwartha Vest
- Genus Homalanthus Wittst.
- Genus Homalotes Endl.
- Genus Homalotheca Rchb.
- Genus Homostylium Nees
- Genus Hookia Neck.
- Genus Hoorebeckia Steud.
- Genus Hoorebekia Corneliss.
- Genus Hopkirkia Spreng. accepted as Salmea DC.
- Genus Hopkirkia DC. accepted as Schkuhria Roth.
- Genus Huenefeldia Walp.
- Genus Hunefeldia Lindl.
- Genus Hunteria ex DC.
- Genus Hyalospermum Benth. & Hook.f.
- Genus Hylethale Link
- Genus Hymenomena Less.
- Genus Hymenostephium Benth. & Hook.f.
- Genus Hypochoeris L.
- Genus Hyppochaeris Biv.
- Genus Hysteronica Endl.
- Genus Hysterophorus Adans.
- Genus Ichthyothera [Klotzsch & ex]
- Genus Ichtyothere DC.
- Genus Icthyothere Baker
- Genus Ictinus Cass. accepted as Gorteria L.
- Genus Idianthes Desv. accepted as Crepis L.
- Genus Idicium Neck.
- Genus Indoixeris Kitam.
- Genus Infantea Remy accepted as Amblyopappus Hook. & Arn.
- Genus Ingenhousia Kuntze
- Genus Ingenhousia Steud.
- Genus Ingenhouzia Bertero ex DC.
- Genus Inthybus Herder
- Genus Intybellia Monn.
- Genus Intybus Fr. accepted as Crepis L.
- Genus Intybus Zinn
- Genus Inyonia M.E.Jones
- Genus Iocaste E.Mey. ex DC.
- Genus Iodocephalopsis S. Bunwong & H.Rob. (1)
- Genus Iodocephalopsis Bunwong & H.Rob.
- Genus Iranoaster Kaz.Osaloo, Farhani & Mozaff. (1)
- Genus Isanthus DC. accepted as Perezia Lag.
- Genus Ischnaea
- Genus Ismaria Raf. accepted as Brickellia Elliott
- Genus Isocarpha Less. accepted as Ageratum L.
- Genus Isomeria D.Don ex DC.
- Genus Iteria Hort.
- Genus Ixauchenus Cass. accepted as Lagenophora Cass.
- Genus Ixiauchenus Less.
- Genus Ixine Hill
- Genus Ixiochlamys F.Muell. ex Sond.
- Genus Jacobaea Burm.
- Genus Jacobaea Burm. ex Kuntze
- Genus Jacobea Thunb.
- Genus Jacosta DC.
- Genus Jacquemontia Bél.
- Genus Jalambica Raf.
- Genus Jamesia Nees
- Genus Japonicalia C.Ren & Q.E.Yang
- Genus Jardinia Sch.Bip.
- Genus Jeffreya Cabrera
- Genus Jeffreyzia
- Genus Jessenia F.Muell. ex Sond.
- Genus Jobaphes Phil. accepted as Aphyllocladus Wedd. (1)
- Genus Jocaste Meisn.
- Genus junceum (Poljakov) Filatova
- Genus Kahiria Forssk.
- Genus Kalimares Raf.
- Genus Kallophyllon Pohl ex Baker
- Genus Karthemia Sch.Bip.
- Genus Keerlia A.Gray & Engelm.
- Genus Kegelia Sch.Bip. accepted as Eleutheranthera Poit.
- Genus Keringa Raf.
- Genus Kiliana Sch.Bip. ex Hochst.
- Genus Kiliania Sch.Bip. ex Benth. & Hook.f.
- Genus Kitamuraea Rauschert accepted as Miyamayomena Kitam.
- Genus Kitamuraster Soják accepted as Miyamayomena Kitam.
- Genus Kleina Cothen.
- Genus Klenzea Sch.Bip. ex Steud.
- Genus Klenzea Sch.Bip. ex Hochst.
- Genus Koanophyllon Arruda ex H.Kost.
- Genus Koanophyllum Arruda ex H.Kost.
- Genus Koechlea Endl.
- Genus Kralikia Sch.Bip.
- Genus Kraussia Sch.Bip.
- Genus Krenamon Adans.
- Genus Kuhniodes Post & Kuntze
- Genus Kyberia Neck.
- Genus Kymapleura (Nutt.) Nutt. accepted as Agoseris Raf.
- Genus Kyrstenia Neck. ex Greene accepted as Ageratina Spach
- Genus Kyrstenia Neck. accepted as Ageratina Spach
- Genus Lachanostachys Endl.
- Genus Lachnothalamus F.Muell.
- Genus Laciala Kuntze
- Genus Laciniaria Kuntze
- Genus Laciniaria Hill
- Genus Lactucopsis Sch.Bip. ex Vis.
- Genus Laenecia Sch.Bip. ex Walp.
- Genus Laenecia Sch.Bip.
- Genus Lagaseris
- Genus Lagenifera Cass.
- Genus Lagerophora Domin
- Genus Laggera Sch.Bip. ex Walp. accepted as Cotula Tourn. ex L.
- Genus Laggera Sch.Bip. ex Benth.
- Genus Lagoseris Hoffmanns. ex Hoffmanns. & Link
- Genus Lagothamnus Nutt.
- Genus Lalda Bubani
- Genus Lamprochlaena F.Muell.
- Genus Lampsana Mill.
- Genus Lampsana Rupp.
- Genus Lancisia Ponted. ex Adans.
- Genus Langsdorffia Willd. ex Steud.
- Genus Lapeirousia Thunb.
- Genus Lapeyrousia Thunb.
- Genus Lapeyrousia Spreng.
- Genus Lapsyoungia Hiyama
- Genus Lasallea Greene accepted as Aster L.
- Genus Lasianthea Endl.
- Genus Lasiocarphus Pohl ex Baker
- Genus Lasiophyton Hook. & Arn.
- Genus Lasiopus D.Don
- Genus Lasiorhiza Kuntze
- Genus Lasiospermum Fisch.
- Genus Launaea Auct. accepted as Launaea Cass.
- Genus Launaya Kuntze
- Genus Launaya Rchb.
- Genus Launea Endl.
- Genus Laurencellia Neumann
- Genus Laurentia Steud. accepted as Sanvitalia Lam.
- Genus Lavidia Phil.
- Genus Laxanon Raf.
- Genus Laxmannia J.R.Forst. & G.Forst. accepted as Petrobium R.Br.
- Genus Laxmannia Forst.
- Genus Laxopetalum Pohl ex Baker
- Genus Laya Endl.
- Genus Lebianthus K.Schum.
- Genus Leeria Steud.
- Genus Leiodon Shuttlew. ex Sherff
- Genus Lejica Hill ex DC. accepted as Zinnia L.
- Genus Leo Phil. accepted as Helogyne Nutt.
- Genus Leontodon Adans.
- Genus Leontondon Robin
- Genus Leontonix Heynh.
- Genus Leontopodion St.-Lag.
- Genus Lepicline Less.
- Genus Lepidonema Fisch. & C.A.Mey.
- Genus Lepidopappus Moc. & Sessé ex DC.
- Genus Lepidophorum Neck. ex DC.
- Genus Lepidopogon Tausch
- Genus Lepidoseris (H. G. L. Reichenbach) Fourr.
- Genus Leptalea D.Don ex Hook. & Arn.
- Genus Leptica E.Mey. ex DC.
- Genus Leptocarpha Endl.
- Genus Leptoclinium Benth.
- Genus Leptorhynchus F.Muell.
- Genus Leptotis Hoffmanns.
- Genus Lerchia Rchb.
- Genus Lestadia Spach accepted as Laestadia Kunth ex Less.
- Genus Lestibodea Neck.
- Genus Lestibudaea Juss.
- Genus Lettowia H.Rob. & Skvarla
- Genus Leucaeria DC.
- Genus Leucampyx A.Gray accepted as Hymenopappus L'Hér.
- Genus Leucanthemum Burm.
- Genus Leucanthemum Burm. ex Kuntze
- Genus Leuceria Lag. accepted as Leucheria Lag.
- Genus Leuchaeria Less.
- Genus Leucoglossum S.Imai
- Genus Leucophyton Less. accepted as Leucophyta R.Br.
- Genus Leucopodon Benth. & Hook.f.
- Genus Leucopodum Gardner accepted as Chevreulia Cass.
- Genus Leucoseris Fourr.
- Genus Leucostemma D.Don
- Genus Leuctodon Auct.
- Genus Leukeria Endl.
- Genus Leyseria Neck.
- Genus Liathris Müll.Berol.
- Genus Libinhania N.Kilian, Galbany, Oberpr. & A.G.Mill.
- Genus Lidbecka Cothen.
- Genus Lidbekia Spreng.
- Genus Lieberkuehna Rchb.
- Genus Lieberkuehnia Rchb.
- Genus Lieberkuhnia Less.
- Genus Limnocrepis Fourr. accepted as Crepis L.
- Genus Limnogenneton Sch.Bip. accepted as Micractis DC.
- Genus Limnoseris 'Peterm.'
- Genus Limonoseris Peterm. accepted as Crepis L.
- Genus Lioydia Neck.
- Genus Lioydia Neck. ex Raf.
- Genus Lipochaete Benth.
- Genus Lipotriche Less. accepted as Lipochaeta DC.
- Genus Lloydia Benth. & Hook.f.
- Genus Locheria Neck.
- Genus Lomanthus B.Nord. & Pelser
- Genus Lomaxeta Raf.
- Genus Lophactis Raf.
- Genus Lophoclinium Endl.
- Genus Lophoptilon Gagnep.
- Genus Lorantea Steud.
- Genus Loranthea Steud.
- Genus Lorentia Sweet
- Genus Luthera Sch.Bip.
- Genus Lycotis Hoffmanns.
- Genus Lyonetia Willk.
- Genus Lyonettia Endl.
- Genus Macrocephalus Lindl.
- Genus Macropertya Honda
- Genus Macrorrhyncus Brongn.
- Genus Madacarpus Wight
- Genus Madaraglossa Hook.
- Genus Madea Sol. ex DC.
- Genus Maecharanthera Pritz.
- Genus Mahometa DC.
- Genus Maja Wedd.
- Genus Malacocephalus Tausch
- Genus Mallinoa J. Coulter accepted as Ageratina Spach
- Genus Mandonia Sch.Bip. accepted as Hieracium Tourn. ex L.
- Genus Margacola Buckley
- Genus Margaritaria Opiz
- Genus Mariacantha Bubani
- Genus Marizia Gand.
- Genus Marschallia Bartl.
- Genus Martrasia Lag. accepted as Jungia L.f.
- Genus Maruta (Cass.) Cass.
- Genus Mastigophorus Cass. accepted as Nassauvia Comm. ex Juss.
- Genus Matamoria La Llave
- Genus Matricaria Hall. ex Scop.
- Genus Matricarioides (Less.) Spach
- Genus Mausolea Bunge ex Podlech
- Genus Medicasia Willk.
- Genus Medicula Medik.
- Genus Medicusia Moench accepted as Picris L.
- Genus Meistera Cothen.
- Genus Meisteria Scop. accepted as Pacourina Aubl.
- Genus Melanenthera Link
- Genus Melissopsis Sch.Bip. ex Baker
- Genus Menomphalus Pomel
- Genus Metagnanthus Endl.
- Genus Metagnathus Benth. & Hook.f.
- Genus Metaxanthus Walp.
- Genus Metazanthus Meyen
- Genus Meteorina Cass. accepted as Dimorphotheca Vaill. ex Moench
- Genus Meyerafra Kuntze
- Genus Michauxia Neck.
- Genus Micrauchenia Froel.
- Genus Microcoecia Hook. accepted as Delilia Spreng.
- Genus Microcoecia Hook.f.
- Genus Microderis D.Don ex Gand.
- Genus Microlecana Sch.Bip. accepted as Bidens L.
- Genus Microlecane Sch.Bip. accepted as Bidens L.
- Genus Microlonchoides P.Candargy
- Genus Microlophopsis Czerep.
- Genus Micropappus (Sch.Bip.) C.F.Baker
- Genus Microrynchus Sch.Bip.
- Genus Miegia Neck.
- Genus Millefolium Tourn. ex Adans.
- Genus Millefolium Hill
- Genus Millera St.-Lag.
- Genus Millera Cothen.
- Genus Millottia Stapf
- Genus Mimela Phil. accepted as Leucheria Lag.
- Genus Minuriella Tate
- Genus Miradoria Sch.Bip. ex Benth. & Hook.f.
- Genus Mischanthus Coss.
- Genus Mitina Adans.
- Genus Mnesitheon Spreng.
- Genus Moehnia Neck.
- Genus Moerkensteinia Opiz
- Genus Molpadia (Cass.) Cass. accepted as Telekia Baumg.
- Genus Monilifera Adans.
- Genus Monophalacrus Cass. accepted as Tessaria Ruiz & Pav.
- Genus Montagnaea DC. accepted as Montanoa Cerv.
- Genus Montagnea Seem.
- Genus Moritzia Sch.Bip. ex Benth. & Hook.f.
- Genus Morna Lindl.
- Genus Moronoa Hort. ex Kunze
- Genus Morrenia Kunze accepted as Mikania Willd.
- Genus Moscaria Pers.
- Genus Moschifera Molina
- Genus Mosigia Spreng.
- Genus Munrozia Steud.
- Genus Mutisa Cothen.
- Genus Myconia Vent.
- Genus Mycropus Gouan
- Genus Mycroseris Hook. & Arn.
- Genus Myctanthes Raf.
- Genus Myoseris Link accepted as Crepis L.
- Genus Myriogyne Less. accepted as Centipeda Lour.
- Genus Nacrea A.Nelson
- Genus Nahuatlea V.A.Funk
- Genus Namibithamnus H.Rob., Skvarla & V.A.Funk
- Genus Narbalia Raf.
- Genus Nassavia Spreng.
- Genus Nassawia Lag.
- Genus Nassovia Batsch
- Genus Neactelis Raf.
- Genus Nematopus A.Gray
- Genus Nemolepis E.Vilm.
- Genus Neobartlettia R.M.King & H.Rob. accepted as Bartlettina R.M.King & H.Rob.
- Genus Neo-taraxacum Y.R.Ling & X.D.Sun
- Genus Neurelmis Raf.
- Genus Neurochlaena Less.
- Genus Newtonia O.Hoffm.
- Genus Nicolettia Benth. & Hook.f.
- Genus Niebuhria Neck. ex Britton accepted as Wedelia Jacq.
- Genus Niebuhria Neck. accepted as Wedelia Jacq.
- Genus Noccaea Kuntze accepted as Lagascea Cav. (1)
- Genus Nothonia Endl.
- Genus Notisia P.S.Short (1)
- Genus Obaejaca (Cass.) Cass. accepted as Senecio L.
- Genus Obeliscaria Cass. accepted as Ratibida Raf.
- Genus Obeliscotheca Vaill. ex Adans. accepted as Rudbeckia L. (1)
- Genus Obelisteca Raf. accepted as Ratibida Raf.
- Genus Oboejaca Steud.
- Genus Ocneron Raf.
- Genus Odoglossa Raf.
- Genus Odontocarpha Poepp. ex DC. accepted as Gutierrezia Lag.
- Genus Odontophyllum (Less.) Spach
- Genus Odontoptera Cass. accepted as Arctotis L.
- Genus Oederia DC.
- Genus Oegroe Phil.
- Genus Ogcerostylus Cass. accepted as Siloxerus Labill.
- Genus Oligaerion Cass.
- Genus Oliganthemum F.Muell. accepted as Pluchea Cass.
- Genus Oligocarpha Cass. accepted as Brachylaena R.Br.
- Genus Oligodorella Turcz.
- Genus Oligodorum Spach
- Genus Oligoglossa DC.
- Genus Oligotheca
- Genus Onopix Raf.
- Genus Onopyxos Spreng.
- Genus Onopyxus Bubani
- Genus Ooclinium DC. accepted as Praxelis Cass.
- Genus Ophyrosporus Baker
- Genus Opicrina Raf.
- Genus Oporina Less.
- Genus Oporinea W.H.Baxter
- Genus Orchaenactis "coville" ex O.Hoffm.
- Genus Oreodoxa
- Genus Oreophila D.Don accepted as Hypochaeris L.
- Genus Oreoseris DC.
- Genus Oresigonia Willd. ex DC. accepted as Senecioneae Cass.
- Genus Oresigonia Willd. ex Less.
- Genus Orestion Raf.
- Genus Oriastrum Poepp. (1)
- Genus Orsina Bertol. accepted as Inula L.
- Genus Osmia Sch.Bip. accepted as Chromolaena DC.
- Genus Osmitiphyllum Sch.Bip.
- Genus Osteiza Steud.
- Genus Oswaldia Cass. accepted as Clibadium F.Allam. ex L.
- Genus Oswaldia Less. accepted as Clibadium F.Allam. ex L.
- Genus Otoglyphis Pomel
- Genus Oxerostylus Steud.
- Genus Oxiphoeria Hort. ex Dum.Cours.
- Genus Oxodon Steud.
- Genus Oxylaena Benth.
- Genus Oxylobus Moc. ex DC.
- Genus Oxyodon DC. accepted as Chaptalia Vent.
- Genus Oxyphaeria Steud.
- Genus Oxypheria DC.
- Genus Oxyphoeria Dum.Cours.
- Genus Oxytripolium Anonymous
- Genus Pachycentron Pomel
- Genus Pachychaeta Sch.Bip. ex Baker
- Genus Pachyderis Cass. accepted as Pteronia L.
- Genus Pachylepis Less. accepted as Crepis L.
- Genus Pachyrhynchus DC. accepted as Lucilia Cass.
- Genus Pachyrynchus Steud.
- Genus Pachysurus Steetz
- Genus Pachythrix Hook.f.
- Genus Pacquerina Cass. ex Sond.
- Genus Paleolaria Cass. accepted as Palafoxia Lag.
- Genus Panargyrum D.Don accepted as Nassauvia Comm. ex Juss.
- Genus Panargyrus Lag.
- Genus Paneroa E.E.Schill.
- Genus Panetia Fenzl
- Genus Paniopsis Raf.
- Genus Panios Adans.
- Genus Paquerina Cass. accepted as Bellis L. (1)
- Genus Paquirea Panero & S.E.Freire
- Genus Parasenaria J.M.H.Shaw
- Genus Parasyncalathium J.W. Zhang, Boufford & H.Sun (1)
- Genus Pardisium Burm.f.
- Genus Parthenopsis Kellogg
- Genus Passacardoa Wild accepted as Pasaccardoa Kuntze
- Genus Pegolletia Less.
- Genus Penanthes Vell.
- Genus Pentanthus Hook. & Arn.
- Genus Pentanthus Less.
- Genus Pentataxis D.Don
- Genus Penthanthus Steud.
- Genus Pentheriella O.Hoffm. & Muschl.
- Genus Pentiphragma Hook.
- Genus Pereuphora Hoffmanns.
- Genus Pereziopsis Coult. accepted as Onoseris Willd.
- Genus Pericallis Webb & Berthel.
- Genus Perimenium Steud.
- Genus Peripleura Clifford & Ludlow
- Genus Peritris Raf.
- Genus Personaria Lam.
- Genus Perymeniopsis Sch.Bip. ex Klatt
- Genus Petalactella N.E.Br. accepted as Ifloga Cass.
- Genus Petalolepis Cass. accepted as Ozothamnus R.Br.
- Genus Petalolepis Less.
- Genus Petasitis Mill.
- Genus Petrantha DC.
- Genus Petrodavisia Holub
- Genus Petrollinia Chiov. accepted as Inula L.
- Genus Petronia Jungh.
- Genus Peurousea Steud.
- Genus Phacellothrix F.Muell. accepted as Helichrysum Mill. (1)
- Genus Phaenopoda Cass. accepted as Podosperma Labill.
- Genus Phaethusia Raf.
- Genus Phaetusa Schreb.
- Genus Phalacroglossum Sch.Bip.
- Genus Phalacromesus Cass. accepted as Tessaria Ruiz & Pav.
- Genus Pharia Steud.
- Genus Phenopus Hook.f.
- Genus Phialis Spreng. accepted as Trichophyllum Nutt.
- Genus Philaginopsis Walp.
- Genus Phoenicopus Spach
- Genus Phoenicoseris (Skottsb.) Skottsb. accepted as Sonchus L.
- Genus Phoenixopus Rchb.
- Genus Phoenocoma G.Don
- Genus Phoenopus Nyman
- Genus Phrenanthes Wigg.
- Genus Phyllactinia Benth.
- Genus Phyllactis Steud.
- Genus Phyllochilium Cabrera accepted as Chiliophyllum Phil.
- Genus Phyllopappus Walp.
- Genus Phyllostelidium Beauverd
- Genus Phyllymena Blume ex Miq.
- Genus Picardenia Steud.
- Genus Picrina Rchb. ex Steud.
- Genus Pietrosia Nyár. accepted as Andryala L.
- Genus Pietrosia Nyár.
- Genus Pilosanthus Steud.
- Genus Pilosella F.W.Schultz & Sch.Bip.
- Genus Pinardia Neck.
- Genus Pinillosia Ossa
- Genus Piptopogon Cass. accepted as Hypochaeris L.
- Genus Piptostemma (D.Don) Spach
- Genus Piptostemum Steud.
- Genus Pirarda Adans.
- Genus Pitchia Auct.
- Genus Plagion St.-Lag.
- Genus Plancia Neck.
- Genus Platzchaeta Sch.Bip.
- Genus Pleocarpus Walp.
- Genus Pluechea Zoll. & Moritzi
- Genus Pluridens Neck.
- Genus Podia Neck.
- Genus Poecilotriche Dulac
- Genus Pogonura DC. ex Lindl.
- Genus Poilania Gagnep.
- Genus Polatherus Raf.
- Genus Poljakanthema Kamelin
- Genus Poloa DC.
- Genus Polyacantha Hill
- Genus Polyachris Walp.
- Genus Polycalymma F.Muell. ex Sond.
- Genus Polycantha Hill
- Genus Polyclados Phil. accepted as Parastrephia Nutt.
- Genus Polymniastrum Small accepted as Smallanthus Mack.
- Genus Polypappus Nutt.
- Genus Polypteris Nutt.
- Genus Polypteris Less. accepted as Gaillardia Foug.
- Genus Ponaea Bubani
- Genus Pontesia Vell. accepted as Riencourtia Cass.
- Genus Portalesia Meyen
- Genus Postia Boiss. & C.I.Blanche
- Genus Praenanthes Hook.
- Genus Prenanthenia Svent.
- Genus Prenanthos St.-Lag.
- Genus Prenantus Raf.
- Genus Prestinaria Sch.Bip. ex Hochst.
- Genus Prianthes Pritz.
- Genus Priestleya ex DC.
- Genus Prionolepis Poepp. & Endl.
- Genus Proselia D.Don
- Genus Protolepis Steud.
- Genus Psanacetum Neck.
- Genus Pseudalomia Zoll. & Moritzi
- Genus Pseudevax DC. ex Steud.
- Genus Pseudoclinium Kuntze
- Genus Pseudoglossanthis Poljakov (1)
- Genus Pseudomatricaria Domin
- Genus Pseudopegolettia H.Rob., Skvarla & V.A.Funk
- Genus Pseudoseris Baill.
- Genus Psilachenia Benth.
- Genus Psilochenia Nutt. accepted as Crepis L.
- Genus Psilochlaena Walp.
- Genus Psilopogon Phil. accepted as Picrosia D.Don
- Genus Psilosanthus Neck.
- Genus Psilothamnus DC.
- Genus Psilothonna E.Mey. ex DC.
- Genus Psora Hill
- Genus Ptarmica Neck.
- Genus Pterigeron A.Gray
- Genus Pternix Hill
- Genus Pternix Raf.
- Genus Pterochaete Boiss.
- Genus Pterocladis Lamb. ex G.Don
- Genus Pteropappus Pritz.
- Genus Pterophora Neck.
- Genus Pterophorus Vaill. ex Adans.
- Genus Pterophyton Cass. accepted as Verbesina L.
- Genus Pteropogon Fenzl
- Genus Pterosenecio Sch.Bip. ex Baker
- Genus Pterostephanus Kellogg
- Genus Ptilepida Raf.
- Genus Ptileris Raf. accepted as Erechtites Raf.
- Genus Ptilocalais Torr. ex Greene accepted as Microseris D.Don
- Genus Ptilophora (Torr. & A.Gray ex Hook.) A.Gray accepted as Microseris D.Don
- Genus Ptiloria Raf. accepted as Stephanomeria Nutt. (1)
- Genus Ptilosia Tausch
- Genus Ptilurus D.Don accepted as Leucheria Lag.
- Genus Publicaria Deflers
- Genus Pulicaria Gaertn. ex Schreb.
- Genus Pulicarioidea Bunwong, Chantar. & S.C.Keeley
- Genus Pumilo Schltdl.
- Genus Pycarda Less.
- Genus Pycnocomon St.-Lag.
- Genus Pycnocomus Hill
- Genus Pyrarda Cass. accepted as Grangea Adans.
- Genus Pyrethraria Pers. ex Steud.
- Genus Pyrethron St.-Lag.
- Genus Pyrethropsis (1)
- Genus Pyrethrum Scop.
- Genus Pyrethrum Hall.
- Genus Pyretrum Burm.
- Genus Pyropsis Hort. ex Fisch., C.A.Mey. & Avé-Lall.
- Genus Pyrrhocoma Wall.
- Genus Pyrrhopappus A.Rich.
- Genus Pythecoseris Spach
- Genus Raillarda Endl.
- Genus Raillardella Benth.
- Genus Railliarda DC.
- Genus Raoulia Hook.f.
- Genus Ratabida Loudon
- Genus Razumovia Spreng.
- Genus Razumovia Spreng. ex Juss.
- Genus Rea Bertero ex Decne. accepted as Dendroseris D.Don
- Genus Reicharda Cothen.
- Genus Reichardia Roth.
- Genus Resinocaulon Lunell
- Genus Rhagadiolus Zinn
- Genus Rhagadiolus Tourn. ex Scop.
- Genus Rhantherium Sch.Bip.
- Genus Rhea Endl.
- Genus Rhigiothamnus (Less.) Spach
- Genus Rhinactina Willd. accepted as Jungia L.f. (2)
- Genus Rhodactinia Benth. & Hook.f.
- Genus Rhyditospermum Walp.
- Genus Rhynchopappus Dulac accepted as Crepis L.
- Genus Rhynchospermum Reinw.
- Genus Ridan Kuntze
- Genus Ridania Kuntze
- Genus Riddelliinae O.Hoffm.
- Genus Roberta St.-Lag.
- Genus Roccardia Neck. ex Raf.
- Genus Roccardia Neck.
- Genus Rodigia Spreng accepted as Crepis L.
- Genus Roebuckia P.S.Short accepted as Brachyscome Cass.
- Genus Roebuckiella P.S.Short
- Genus Rolfinkia Zenker
- Genus Rosaura Noronha
- Genus Rothia Schreb. accepted as Andryala L.
- Genus Rothia Lam. accepted as Hymenopappus L'Hér.
- Genus Rudbecka Cothen.
- Genus Rudbekia Scop.
- Genus Ruthrum Hill
- Genus Rutidochlamys Sond.
- Genus Rytidea Spreng.
- Genus Sabbata Vell.
- Genus Salmia Post & Kuntze
- Genus Salviastrum Heist. ex Fabr.
- Genus Sanhilaria leandr. ex DC.
- Genus Sanrobertia G.L.Nesom
- Genus Santolina Tourn.
- Genus Santonica Griff.
- Genus Sanvitalia L.
- Genus Scalia Sieber ex Sims
- Genus Scaliopsis Walp.
- Genus Scepinia Neck. ex Cass. accepted as Pteronia L.
- Genus Scepinia Neck.
- Genus Schaeffnera Benth. & Hook.f.
- Genus Schaetzelia Walp.
- Genus Schaetzelia Sch.Bip.
- Genus Schaetzellia Sch.Bip.
- Genus Schaffnera Sch.Bip.
- Genus Schawia Cothen.
- Genus Scheuchleria Heynh.
- Genus Schistocarpia Pritz.
- Genus Schkuhria Roth.
- Genus Schlechtendahlia Benth. & Hook.f.
- Genus Schmidtia Moench accepted as Tolpis Adans.
- Genus Schnittspahnia Sch.Bip.
- Genus Schortia Hort. ex E.Vilm.
- Genus Sciadioseris Kunze
- Genus Sciadoseris Müll.Berol.
- Genus Scirrhophorus Turcz.
- Genus Sckuhria Moench
- Genus Sclerobasis Cass. accepted as Senecio L.
- Genus Scleroleima Hook.f.
- Genus Sclerolepis Monnier accepted as Crepis L.
- Genus Sclerolepis Monn.
- Genus Sclerophyllum Gaudin accepted as Crepis L.
- Genus Scolopospermum Hemsl. accepted as Baltimora L.
- Genus Scolymanthus Willd. ex DC. accepted as Perezia Lag.
- Genus Scytala E.Mey. ex DC.
- Genus Sebastiana Benth. & Hook.f. accepted as Chrysanthellum Rich.
- Genus Sebastiania Bertol.
- Genus Selenocera Zipp. ex Span.
- Genus Selenogyne DC.
- Genus Senecillicacalia Kitam.
- Genus Seneciunculus Opiz
- Genus Seneico Hill
- Genus Sericocarpus Greene (1)
- Genus Seridia Juss. accepted as Centaurea L.
- Genus Seriphidium (Besser) Poljakov
- Genus Seruneum Rumph.
- Genus Setachna Dulac
- Genus Seubertia H.C.Watson
- Genus Shawia Forst. (2)
- Genus Sidneya E.E.Schill. & Panero
- Genus Siegesbecka Cothen.
- Genus Siegesbeckia Steud.
- Genus Silphion St.-Lag.
- Genus Silphiosperma Steetz
- Genus Silybon St.-Lag.
- Genus Simblocline DC. accepted as Diplostephium Kunth
- Genus Simlera Bubani
- Genus Sincalia
- Genus Sinclairea Sch.Bip.
- Genus Siphonogyne Cass.
- Genus Sitilias Raf. accepted as Pyrrhopappus DC.
- Genus Skirrhophorus DC. ex Lindl.
- Genus Skirrophorus Müll.Berol.
- Genus Sobreya Pers. accepted as Enydra Lour.
- Genus Sobrya Pers.
- Genus Sogaligna Steud.
- Genus Soldevilla Lag.
- Genus Solidaster Wehrhahn
- Genus Solivaea Cass. accepted as Soliva Ruiz & Pav.
- Genus Sonchidium Pomel accepted as Sonchus L.
- Genus Sonchos St.-Lag.
- Genus Sonchoseris Fourr. accepted as Sonchus L.
- Genus Sonchustenia Svent.
- Genus Sonnea Greene
- Genus Soyera St.-Lag.
- Genus Soyeria Monn.
- Genus Spadactis Cass. accepted as Atractylis L.
- Genus Spadactis Cass. ex Less.
- Genus Spanioptilon Less.
- Genus Spanotrichum E.Mey. ex DC.
- Genus Spermophylla Neck.
- Genus Sphaeranthoides A.Cunn. ex DC.
- Genus Sphaereupatorium Kuntze
- Genus Sphaerocephala Hill
- Genus Sphaerocephalus Kuntze
- Genus Sphaerocephalus Lag. ex DC.
- Genus Sphaerophyllum Auct.
- Genus Spheranthus Hill
- Genus Spilacron Cass. accepted as Centaurea L.
- Genus Spilanthus L.
- Genus Spinoliva G.Sancho, Luebert & Katinas
- Genus Spiralepis D.Don
- Genus Spiridanthus Fenzl
- Genus Sprunira Sch.Bip. ex Hochst.
- Genus Sprunnera Sch.Bip. ex Walp.
- Genus Sprunnera Sch.Bip.
- Genus Staebe Hill
- Genus Stanfieldia Small
- Genus Starkia Juss. ex Steud.
- Genus Stegonotus Cass. accepted as Arctotis L.
- Genus Steiractis Raf.
- Genus Steirocoma (DC.) Rchb.
- Genus Steiroglossa DC.
- Genus Steleocodon Gilli
- Genus Stelmanis Raf.
- Genus Stematella Wedd. ex Sch.Bip. accepted as Galinsoga Ruiz & Pav.
- Genus Stemmatella Wedd. ex Sch.Bip.
- Genus Stemmatella Wedd. ex Benth.
- Genus Stenogyne Cass.
- Genus Stenotheca Monn.
- Genus Stenotopsis Rydb. accepted as Ericameria Nutt.
- Genus Stephania (Kuntze) Kuntze
- Genus Stephanocoma Less.
- Genus Stephanopholis S.F.Blake (1)
- Genus Steriphe Phil.
- Genus Stictophyllum Edgew.
- Genus Stilpnophytum Less. accepted as Athanasia L.
- Genus Stoechas Gueldenst.
- Genus Strabonia DC.
- Genus Streckera Sch.Bip.
- Genus Streptorhamphus Regel
- Genus Strongyloma DC.
- Genus Strongylomopsis Speg.
- Genus Strumarium Raf.
- Genus Stylesia Nutt. accepted as Bahia Lag.
- Genus Stylopappus Nutt. accepted as Agoseris Raf.
- Genus Succisocrepis Fourr. accepted as Crepis L.
- Genus Sulzeria J. J. Roemer & J. A. Schultes
- Genus Susanna E.Phillips
- Genus Swertia All.
- Genus Swertia Boehm.
- Genus Swertya Steud.
- Genus Swinburnia Ewart
- Genus Sycodium Pomel
- Genus Symphipappus Klatt (1)
- Genus Synarthron Benth. & Hook.f.
- Genus Synarthrum Cass. accepted as Senecio L.
- Genus Syncephalanthus Benth. & Hook.f.
- Genus Synchodendron Bojer ex DC.
- Genus Synosma Raf. ex Britton accepted as Hasteola Raf.
- Genus Synosma Raf.
- Genus Tafalla D.Don accepted as Loricaria Wedd.
- Genus Tagetinae Less.
- Genus Taimingasa (Kitam.) C.Ren & Q.E.Yang
- Genus Tamayoa V.M.Badillo
- Genus Tanaxion Raf.
- Genus Taraxacum Weber
- Genus Teichostemma R.Br.
- Genus Telfordia accepted as Ozothamnus R.Br.
- Genus Terana La Llave
- Genus Tessenia Bubani (1)
- Genus Tetracanthus C.Wright ex Griseb.
- Genus Tetralix Hill
- Genus Tetralyx Hill
- Genus Tetrantha Poit. ex DC. accepted as Riencourtia Cass.
- Genus Tetratrichia Dinter
- Genus Thamnoseris F.Phil.
- Genus Thelosperma Post & Kuntze
- Genus Thelythamnos A.Spreng.
- Genus Theophroseris Andrae
- Genus Therogeron DC.
- Genus Therolepta Raf.
- Genus Thespidium F.Muell. ex Benth.
- Genus Thinobia Phil.
- Genus Thlipsocarpus Kunze accepted as Hyoseris L.
- Genus Thouarsia Vent. ex DC.
- Genus Thrica Gray
- Genus Thrincia Roth. accepted as Leontodon L.
- Genus Thrixia Dulac
- Genus Thuraria [Nutt.]
- Genus Thymophyllum Benth. & Hook.f.
- Genus Thyopsis Ascherson & Graebner
- Genus Thyopsis Wedd.
- Genus Thyrsanthema Neck. ex Kuntze
- Genus Thysanurus O.Hoffm.
- Genus Thysopsis Wedd. accepted as Loricaria Wedd.
- Genus Timanthea Salisb. accepted as Baltimora L.
- Genus Tola Wedd. ex Benth. & Hook.f.
- Genus Tolbonia Kuntze accepted as Calotis R.Br. (1)
- Genus Toxacanthus (2)
- Genus Toxanthus Benth.
- Genus Trachodes D.Don accepted as Sonchus L. (1)
- Genus Tragantha Wallr. ex Endl.
- Genus Traganthes Wallr.
- Genus Tragoceras Spreng. accepted as Isostigma Less.
- Genus Tragopogonodes Kuntze
- Genus Tragopogum St.-Lag.
- Genus Triachne Cass. accepted as Nassauvia Comm. ex Juss.
- Genus Trianthus Hook.f.
- Genus Trichandrum Neck.
- Genus Trichocrepis Vis. accepted as Crepis L.
- Genus Trichoseris Poepp. & Endl.
- Genus Trichoseris Sch.Bip.
- Genus Trichostegia Turcz.
- Genus Trichostephus Cass. accepted as Wedelia Jacq.
- Genus Trigonopterum Steetz ex Andersson
- Genus Trigonotheca Sch.Bip.
- Genus Trimorphoea Benth. & Hook.f.
- Genus Trinacte Gaertn. accepted as Jungia L.f.
- Genus Trinciatella Adans.
- Genus Tripleurocota Starm.
- Genus Tripolion Raf.
- Genus Tripterachaenium Kuntze
- Genus Triptilium DC.
- Genus Trixis Sw. accepted as Clibadium F.Allam. ex L. (1)
- Genus Trixis Lag.
- Genus Trochoseris Poepp. & Endl. ex Endl.
- Genus Tropidolepis Tausch
- Genus Troximon Nutt.
- Genus Troximon [Nutt.]
- Genus Troximum Steud.
- Genus Trychinolepis B.L.Rob. accepted as Ophryosporus Meyen
- Genus Tuberostyles Benth. & Hook.f. (1)
- Genus Tubilium Cass. accepted as Pulicaria Gaertn.
- Genus Tulakenia Raf.
- Genus Tumionella Greene
- Genus Turanecio Hamzaoglu
- Genus Turpinia Lex.
- Genus Tylloma D.Don
- Genus Ubiaea J.Gay ex J.Gay
- Genus Ucacea Cass.
- Genus Uhdea Kunth accepted as Montanoa Cerv.
- Genus Ulina Opiz
- Genus Uniyala H.Rob. & Skvarla
- Genus Unxia Bertero ex Colla
- Genus Unxia Kunth
- Genus Urbanisol Kuntze accepted as Piptocarpha R.Br. (1)
- Genus Urostylis Meisn.
- Genus Vartheimia Benth. & Hook.f.
- Genus Varthemia Caruel
- Genus Vasquesia Phil. accepted as Unxia L.f.
- Genus Vasquesia Rydb.
- Genus Vazquezia Pritz.
- Genus Vea
- Genus Veltis Adans.
- Genus Venatris Raf.
- Genus Vendredia Baill.
- Genus Venegazia Benth. & Hook.f.
- Genus Vernasolis Raf.
- Genus Verutina Cass. accepted as Centaurea L.
- Genus Viborgia Spreng. accepted as Galinsoga Ruiz & Pav.
- Genus Vieria Webb ex Sch.Bip.
- Genus Villanovaea Post & Kuntze
- Genus Villaria DC.
- Genus Viraya Gaudich.
- Genus Virga-aurea Rupp.
- Genus Virgaria Raf. ex DC. accepted as Symphyotrichum Nees
- Genus Virgaurea Rupp.
- Genus Virgilia L'Hér.
- Genus Virletia Sch.Bip. ex Benth. & Hook.f. accepted as Bahia Lag.
- Genus Vittadenia Steud.
- Genus Voigtia Roth
- Genus Vosacan Adans.
- Genus Vosakan Adans.
- Genus Wahlenbergia Schumach. accepted as Enydra Lour.
- Genus Warthemia Boiss.
- Genus Wendelboa Soest accepted as Taraxacum Weber ex F.H.Wigg.
- Genus Wernera Kuntze accepted as Senecioneae Cass.
- Genus Wettsteinia Petr.
- Genus Wibelia Roehl.
- Genus Wiestia Sch.Bip. accepted as Lactuca L. (1)
- Genus Wigandia Neck. ex Less.
- Genus Wigandia Neck.
- Genus Wightia Spreng. ex DC.
- Genus Wikstroemia Spreng. accepted as Mikania Willd.
- Genus Willdenowia Steud.
- Genus Willkommia Sch.Bip. ex Nyman
- Genus Wirtgenia Sch.Bip. accepted as Wedelia Jacq.
- Genus Wollastonia DC. ex Decne.
- Genus Wootonella Standl. accepted as Verbesina L.
- Genus Wootonia Greene
- Genus Wurdackia Moldenke
- Genus Wurmschnittia Benth.
- Genus Xalkitis Raf.
- Genus Xantho J.Rémy
- Genus Xantholepis Willd. ex Less.
- Genus Xantium Gilib.
- Genus Xantophtalmum Sang.
- Genus Xenophonta Benth. & Hook.f.
- Genus Xeranthium Lepech.
- Genus Xeropappus Wall.
- Genus Xerotium Bluff & Fingerhuth
- Genus Xetoligus Raf.
- Genus Xylanthema Neck.
- Genus Xylothermia Greene
- Genus Yermo Dorn
- Genus Youngia Cass. descr. ampl. Babc. & Stebbins
- Genus Zacyntha Adans.
- Genus Zalucania Steud.
- Genus Zarabellia Neck. accepted as Berkheya Ehrh.
- Genus Zazintha Hall.
- Genus Zeyheria A.Spreng. accepted as Geigeria Griess.
