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- Compositae (33 071)
- Subfamily Asteroideae (Cass.) Lindl. (19 091)
- 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)
- Tribe Cardueae Cass. (3 610)
- Subtribe Arctiinae Garcia-Jacas & Susanna (718)
- Subtribe Berardiinae Garcia-Jacas & Susanna (1)
- Subtribe Cardopatiinae Less. (3)
- Subtribe Carduinae Dumort. (678)
- Genus ×Carduogalactites P.Fourn. (1)
- Genus ×Cirsio-carduus P.Fourn. (5)
- Genus Acarna Hill accepted as Cirsium Mill.
- Genus Acarna Vaill. accepted as Picnomon Adans.
- Genus Acroptilon Cass. accepted as Leuzea DC.
- Genus Afrocarduus (Kazmi) Garcia-Jacas, Moreyra & Susanna (10)
- Genus Afrocirsium Calleja, Garcia-Jacas, Moreyra & Susanna (3)
- Genus Arcyna Wiklund accepted as Cynara L.
- Genus Ascalea Hill accepted as Carduus L.
- Genus Bourgaea Coss. accepted as Cynara L.
- Genus Breea Less. accepted as Cirsium Mill. (1)
- Genus Carduus L. (124)
- Genus Cephalanophlos Fourr. accepted as Cirsium Mill.
- Genus Cephalanophlos Neck. accepted as Cirsium Mill.
- Genus Cirsio-carduus P.Fourn.
- Genus Cirsium Mill. (487)
- Subgenus Cirsium subg. Breea (Less.) Tzvelev
- Subgenus Cirsium subg. Eucirsium
- Section Cirsium sect. Acaulia (Petr.) Tzvelev
- Section Cirsium sect. Anacantha Iljin
- Section Cirsium sect. Cirsium
- Section Cirsium sect. Epitrachys DC.
- Section Cirsium sect. Hymenolepis C.Shih
- Section Cirsium sect. Isolepis C.Shih
- Section Cirsium sect. Lamyropsis Kharadze accepted as Lamyropsis (Kharadze) Dittrich
- Section Cirsium sect. Microcentron (Cass.) Tzvelev
- Section Cirsium sect. Pseudepitrachys Petr.
- Section Cirsium sect. Spanioptilon (Less.) C.Shih
- Section Cirsium sect. Tricholepis C.Shih
- Subsection Cirsium subsect. Acaulia Petr.
- Subsection Cirsium subsect. Amplexifolia Kadota
- Subsection Cirsium subsect. Angustiinvolucrae Kadota
- Subsection Cirsium subsect. Caucasigena Kharadze
- Subsection Cirsium subsect. Erecta (Kitam.) Kadota
- Subsection Cirsium subsect. Nipponensia Kadota
- Subsection Cirsium subsect. Nutantia (Kitam.) Kadota
- Subsection Cirsium subsect. Ogapeninsulae Kadota
- Subsection Cirsium subsect. Praticola Kadota
- Subsection Cirsium subsect. Ramosa Kadota
- Subsection Cirsium subsect. Reflexae (Kitam.) Kadota
- Subsection Cirsium subsect. Schantarensia (Kitam.) Kadota
- Subsection Cirsium subsect. Stolonifera Kadota
- Subsection Cirsium subsect. Suffulta Kadota
- Series Cirsium ser. Aggregata Kharadze
- Series Cirsium ser. Arachnoidea Kharadze
- Series Cirsium ser. Argillosa Kharadze
- Series Cirsium ser. Asiatica Kharadze
- Series Cirsium ser. Cana Kharadze
- Series Cirsium ser. Caucasica (Petr.) Kharadze
- Series Cirsium ser. Colchica Kharadze
- Series Cirsium ser. Cosmeliana Kharadze
- Series Cirsium ser. Elodea Kharadze
- Series Cirsium ser. Erecta Kitam.
- Series Cirsium ser. Fimbriata (Petr.) Kharadze
- Series Cirsium ser. Heterophylla Kharadze
- Series Cirsium ser. Hygrophila Kharadze
- Series Cirsium ser. Lappacea Petr.
- Series Cirsium ser. Leucopsia Kharadze
- Series Cirsium ser. Macrocephala Kharadze
- Series Cirsium ser. Nutantia Kitam.
- Series Cirsium ser. Pubigera Kharadze
- Series Cirsium ser. Pugnacia Kharadze
- Series Cirsium ser. Reflexae Kitam.
- Series Cirsium ser. Schantarensis Kitam.
- Series Cirsium ser. Subinermia Kharadze
- Series Cirsium ser. Tomentosa Kharadze
- Series Cirsium ser. Turkestanica Kharadze
- Series Cirsium ser. Turkestanica Petr.
- Series Cirsium ser. Vlassoviana Kharadze
- Species Cirsium ×ambiguum
- Species Cirsium ×canalense Petr.
- Species Cirsium ×erisithaloides Huter ex Treuinf.
- Species Cirsium ×lojkae Somm. & Levier.
- Species Cirsium ×petrakii kozl. & Woronow ex Grossh.
- Species Cirsium ×schultzianum M.Loehr
- Species Cirsium ×wankelii H. Reichardt.
- Species Cirsium ×xenogenum Petrak.
- Species Cirsium abkhasicum (Petr.) Grossh. accepted as Cirsium osseticum subsp. abkhasicum Petr.
- Species Cirsium abruptum Formánek
- Species Cirsium abukumense Kadota
- Species Cirsium abyssinicum Sch.Bip. ex A.Rich. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium acanthifolium Arv.-Touv.
- Species Cirsium acanthifolium Porta
- Species Cirsium acanthodontum S.F.Blake accepted as Cirsium remotifolium var. rivulare Jeps.
- Species Cirsium acantholepis (Hemsl.) Petr.
- Species Cirsium acantholepis Hemsl. accepted as Cirsium acantholepis (Hemsl.) Petr.
- Species Cirsium acarna (L.) Moench accepted as Picnomon acarna (L.) Cass.
- Species Cirsium acaule (L.) Scop.
- Species Cirsium acaule (L.) All.
- Species Cirsium acaule (L.) A.A.Weber ex Wigg. accepted as Cirsium acaulon (L.) Scop.
- Species Cirsium acaule (L.) F.H.Wigg. accepted as Cirsium acaulon (L.) Scop.
- Species Cirsium acaule Ledeb. accepted as Cirsium esculentum (Siev.) C.A.Mey.
- Species Cirsium acaulescens Jeps.
- Species Cirsium acaulescens (A.Gray) Daniels accepted as Cirsium scariosum var. americanum (A.Gray) D.J.Keil
- Species Cirsium acaulescens (A.Gray) K.Schum. accepted as Cirsium scariosum var. americanum (A.Gray) D.J.Keil
- Species Cirsium acaulon (L.) Scop.
- Species Cirsium acaulos Scop.
- Species Cirsium accedens Rouy
- Species Cirsium aciculare Tausch
- Species Cirsium acrolepis (Petr.) G.B.Ownbey
- Species Cirsium acuatum (Osterh.) Petr. accepted as Cirsium tracyi (Rydb.) Petr.
- Species Cirsium acuatum (Osterh.) Cockerell accepted as Cirsium tracyi (Rydb.) Petr.
- Species Cirsium acuatum (Osterh.) Rydb. accepted as Cirsium tracyi (Rydb.) Petr.
- Species Cirsium acutatum
- Species Cirsium adjaricum Sommier & Levier
- Species Cirsium adulterinum Porta ex Fiori & Bég.
- Species Cirsium adulterinum Porta
- Species Cirsium aduncum Fisch. & C.A.Mey. ex DC.
- Species Cirsium affine Tausch
- Species Cirsium afghanicum Gilli accepted as Cirsium turkestanicum (Regel) Petr.
- Species Cirsium afrum DC.
- Species Cirsium afrum (Jacq.) Fisch. accepted as Ptilostemon afer (Jacq.) Greuter
- Species Cirsium aggregatum Ledeb.
- Species Cirsium aggregatum Merino accepted as Cirsium filipendulum Lange
- Species Cirsium aidzuense Nakai ex Kitam.
- Species Cirsium aitchisonii Boiss.
- Species Cirsium akimontanum Kadota
- Species Cirsium akimotoi Kadota & Mas.Saito
- Species Cirsium alatum (S.G.Gmel.) Bobrov
- Species Cirsium albanum Wettst. accepted as Cirsium ligulare Boiss.
- Species Cirsium alberti Regel & Schmalh.
- Species Cirsium albertii Regel & Schmalh.
- Species Cirsium albescens Kitam.
- Species Cirsium albicans Willk. accepted as Dasyphyllum tomentosum var. multiflorum (Baker) Cabrera
- Species Cirsium albidum Velen.
- Species Cirsium albiflorum (Kitag.) Kitag. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium albowianum Sommier & Levier
- Species Cirsium albrechtii Kudô ex Tatew. accepted as Cirsium heiianum Koidz.
- Species Cirsium albrechtii (Maxim.) Kudô accepted as Cirsium heiianum Koidz.
- Species Cirsium aleutrense Porta ex Kern.
- Species Cirsium alixense Gand.
- Species Cirsium allionii Thurm. accepted as Cirsium monspessulanum (L.) Hill
- Species Cirsium allionii Thurm. ex Ardoino accepted as Cirsium alsophilum (Pollini) Soldano
- Species Cirsium allionii Spenn. accepted as Cirsium acaulon (L.) Scop.
- Species Cirsium alpestre Treuinf.
- Species Cirsium alpestre Nägeli accepted as Cirsium acaulon (L.) Scop.
- Species Cirsium alpicola Nakai
- Species Cirsium alpini Vierh. accepted as Ptilostemon chamaepeuce (L.) Less.
- Species Cirsium alpinum All. accepted as Saussurea alpina (L.) DC.
- Species Cirsium alpis-lunae Brilli-Catt. & Gubellini
- Species Cirsium alsophilum (Pollini) Soldano
- Species Cirsium alsophilum (Pollini) Greuter accepted as Cirsium alsophilum (Pollini) Soldano
- Species Cirsium altissimum (L.) Hill
- Species Cirsium altissimum (L.) Spreng. accepted as Cirsium altissimum (L.) Hill
- Species Cirsium amani Post
- Species Cirsium ambiguum All. accepted as Cirsium heterophyllum (L.) Hill
- Species Cirsium amblylepis Petr. accepted as Cirsium remotifolium var. odontolepis Petr.
- Species Cirsium americanum Jeps.
- Species Cirsium americanum (A.Gray) Daniels accepted as Cirsium scariosum var. americanum (A.Gray) D.J.Keil
- Species Cirsium americanum (A.Gray) B.L.Rob. accepted as Cirsium scariosum var. americanum (A.Gray) D.J.Keil
- Species Cirsium americanum (A.Gray) K.Schum. accepted as Cirsium scariosum var. americanum (A.Gray) D.J.Keil
- Species Cirsium amplexifolium (Nakai) Kitam.
- Species Cirsium amplifolium (Greene) Petr.
- Species Cirsium amplum Gand.
- Species Cirsium anartiolepis Petr.
- Species Cirsium anatolicum (Petr.) Petr. ex Grossh. accepted as Cirsium leucocephalum (Willd.) Spreng.
- Species Cirsium andersonii (A.Gray) Petr.
- Species Cirsium andersonii (A.Gray) Jeps. accepted as Cirsium andersonii (A.Gray) Petr.
- Species Cirsium andreanszkyanum Kárpáti
- Species Cirsium andrewsii (A.Gray) Jeps.
- Species Cirsium andrewsii (A.Gray) Petr. accepted as Cirsium andrewsii (A.Gray) Jeps.
- Species Cirsium anglicum Mill. accepted as Cirsium dissectum (L.) Hill
- Species Cirsium anglicum (Lam.) DC. accepted as Cirsium dissectum (L.) Hill
- Species Cirsium angulosum Tausch
- Species Cirsium angustatum Peterm.
- Species Cirsium angustifolium Tausch accepted as Cirsium tauschii DC.
- Species Cirsium angustifolium (Lam.) DC. accepted as Carduus angustifolius Lam.
- Species Cirsium angustissimum DC. accepted as Tricholepis stictophyllum C.B.Clarke
- Species Cirsium aomorense Nakai
- Species Cirsium apiculatum DC. accepted as Cirsium libanoticum DC.
- Species Cirsium apoense Nakai
- Species Cirsium appendiculatum Griseb.
- Species Cirsium arachnoideum (M.Bieb.) M.Bieb.
- Species Cirsium arachnoideum Besser
- Species Cirsium aragonense Sennen
- Species Cirsium araneans Rydb. accepted as Cirsium clavatum var. osterhoutii (Rydb.) D.J.Keil
- Species Cirsium araneosum (Desf. ex A.DC.) Steud. accepted as Cnicus araneosus Desf. ex DC.
- Species Cirsium araricum Gand.
- Species Cirsium arctioides Scop. accepted as Carduus carduelis (L.) Gren.
- Species Cirsium arctotidifolium Sch.Bip.
- Species Cirsium arctotidifolium Sch.Bip. ex Schweinf. accepted as Cirsium schimperi (Vatke) C.Jeffrey ex Cufod.
- Species Cirsium arcuum A.Nelson accepted as Cirsium neomexicanum A.Gray
- Species Cirsium arenarium
- Species Cirsium arenesi Milliat
- Species Cirsium arenesii Milliat & Arènes
- Species Cirsium arenesii Milliat
- Species Cirsium argentatum (L.) Druce accepted as Carduus cephalanthus Viv.
- Species Cirsium argenteum Peyer ex Vest accepted as Dasyphyllum tomentosum var. multiflorum (Baker) Cabrera
- Species Cirsium argentoides Porta
- Species Cirsium argentum Peyer ex Vest
- Species Cirsium argillosum Petrov ex Kharadze
- Species Cirsium argunense DC. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium argyracanthum DC.
- Species Cirsium aridum Dorn
- Species Cirsium arisanense Kitam.
- Species Cirsium aristatum DC.
- Species Cirsium arizonicum (A.Gray) Petr.
- Species Cirsium armatum Velen. accepted as Cirsium ligulare subsp. armatum (Velen.) Petr.
- Species Cirsium armenum DC. accepted as Cirsium simplex subsp. armenum (DC.) Petr.
- Species Cirsium arvense (L.) Scop.
- Species Cirsium aschersonii Čelak.
- Species Cirsium ashinokuraense Kadota
- Species Cirsium ashiuense
- Species Cirsium asiaticum Schischk. accepted as Cirsium serratuloides (L.) Hill
- Species Cirsium asperum Nakai accepted as Cirsium japonicum var. maackii (Maxim.) Matsum.
- Species Cirsium aspinellum Soják
- Species Cirsium atriplicifolium Fisch. ex Steud. accepted as Synurus deltoides (Aiton) Nakai
- Species Cirsium atticum Sch.Bip. ex Nyman accepted as Cirsium vulgare subsp. crinitum (Boiss. ex DC.) Arènes
- Species Cirsium auriculatum E.G.Camus ex Beleze accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium ausserdorferi Hausm. ex Treuinf.
- Species Cirsium austriacum Khek
- Species Cirsium austrinum O.E.Schulz
- Species Cirsium austrinum (Small) E.D.Schulz accepted as Cirsium texanum Buckley
- Species Cirsium austrohidakaense Kadota
- Species Cirsium austrokiushianum Kitam. accepted as Cirsium sieboldii Miq.
- Species Cirsium austrosatsumense Kitam. accepted as Cirsium sieboldii Miq.
- Species Cirsium autareticum Mutel accepted as Cirsium heterophyllum (L.) Hill
- Species Cirsium autumnale Kitam. accepted as Cirsium oligophyllum (Franch. & Sav.) Matsum.
- Species Cirsium aytachii H.Duman & R.R.Mill
- Species Cirsium aytatchii H. Duman & R.R. Mill.
- Species Cirsium babanum Koidz.
- Species Cirsium babingtonii Rouy
- Species Cirsium bactiacense Gand.
- Species Cirsium badakhschanicum Kharadze
- Species Cirsium baeticum Spreng. accepted as Cynara baetica (Spreng.) Pau
- Species Cirsium balcanicum Sagorski ex Huter
- Species Cirsium balearicum Willk. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium balearicum (Willk.) Porta accepted as Cirsium vulgare subsp. crinitum (Boiss. ex DC.) Arènes
- Species Cirsium balikesirense Yıldız, Arabacı & Dirmenci
- Species Cirsium balkharicum Kharadze
- Species Cirsium barduanum Petr.
- Species Cirsium barnebyi S.L.Welsh & Neese
- Species Cirsium baytopae P.H.Davis & Parris
- Species Cirsium beckii Petr.
- Species Cirsium belingschanicum Petr.
- Species Cirsium belingshanicum Petr. ex Hand.-Mazz. accepted as Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium bellunense Pamp.
- Species Cirsium benacense Treuinf.
- Species Cirsium benaci Porta
- Species Cirsium benearnense Rouy
- Species Cirsium benzii Murr
- Species Cirsium bernadense Pavar.
- Species Cirsium bernardinum (Greene) Petr. accepted as Cirsium occidentale var. californicum (A.Gray) D.J.Keil & C.E.Turner
- Species Cirsium bernardinum (Greene) Davidson & Moxley accepted as Cirsium occidentale var. californicum (A.Gray) D.J.Keil & C.E.Turner
- Species Cirsium bertolonii Spreng.
- Species Cirsium bicentenariale Rzed.
- Species Cirsium bichroophyllum Gand.
- Species Cirsium bicolor Porta
- Species Cirsium biebersteinii Kharadze accepted as Dasyphyllum tomentosum var. tomentosum
- Species Cirsium bifrons Arv.-Touv.
- Species Cirsium bigelowii DC. accepted as Cirsium muticum Michx.
- Species Cirsium bigerriense Rouy
- Species Cirsium bipinnatum (Eastw.) Petr.
- Species Cirsium bipinnatum (Eastw.) Rydb. accepted as Cirsium calcareum (M.E.Jones) Wooton & Standl.
- Species Cirsium bipontinum F.W.Schultz accepted as Cirsium acaulon (L.) Scop.
- Species Cirsium bitchuense Nakai
- Species Cirsium blumeri Petr. accepted as Cirsium wheeleri (A.Gray) Petr.
- Species Cirsium bodinieri (Vaniot) H.Lév. accepted as Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium bohemicum J.Fleisch.
- Species Cirsium bohemicum Fleischer
- Species Cirsium boissieri strib. ex Hayek
- Species Cirsium bolocephalum Petr.
- Species Cirsium bolocephalum Petr. ex Hand.-Mazz. accepted as Cirsium eriophoroides (Hook.f.) Petr.
- Species Cirsium boluense P.H.Davis & Parris
- Species Cirsium bonapartei Maire & Petitm.
- Species Cirsium boninense Koidz.
- Species Cirsium boreale Kitam. accepted as Cirsium borealinipponense Kitam. & Murata ex Kitam.
- Species Cirsium borealinipponense Kitam. & Murata ex Kitam.
- Species Cirsium bornmuelleri Sint. ex Bornm.
- Species Cirsium botryodes Petr.
- Species Cirsium botryodes Petr. ex Hand.-Mazz. accepted as Cirsium griseum H.Lév.
- Species Cirsium botrys Petr. accepted as Cirsium cymosum var. cymosum
- Species Cirsium boujarti Sch.Bip.
- Species Cirsium boujartii (Piller & Mitterp.) Sch.Bip.
- Species Cirsium boulayi Camus
- Species Cirsium boulayi E.G.Camus
- Species Cirsium bourgaeanum Willk.
- Species Cirsium bozkirense H.Duman, Dirmenci & Tugay
- Species Cirsium brachiatum Porta
- Species Cirsium brachycephalum Jur.
- Species Cirsium bracteatum Link accepted as Notobasis syriaca (L.) Cass.
- Species Cirsium bracteiferum C.Shih
- Species Cirsium bracteosum DC.
- Species Cirsium bracteosum Arv.-Touv.
- Species Cirsium branquinhoi Rothm.
- Species Cirsium braun-blanquetianum Lawalrée
- Species Cirsium braunii F.Schultz ex Nyman accepted as Cirsium oleraceum (L.) Scop.
- Species Cirsium breunium Goller & Huter
- Species Cirsium brevicaule A.Gray
- Species Cirsium brevicaule Gand.
- Species Cirsium brevifolium Nutt.
- Species Cirsium brevipapposum Czerniak.
- Species Cirsium brevipapposum Tschern.
- Species Cirsium breviscapum Eichenf.
- Species Cirsium brevispinum Sch.Bip. ex Nyman accepted as Cirsium pungens Spreng.
- Species Cirsium brevistylum Cronquist
- Species Cirsium breweri (A.Gray) Jeps. accepted as Cirsium douglasii var. breweri (A.Gray) D.J.Keil & C.E.Turner
- Species Cirsium britannicum Scop. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium brixiense Porta
- Species Cirsium brueggeri Kill. ex Brügger
- Species Cirsium brunneri A.Braun ex Nyman accepted as Cirsium tuberosum (L.) All.
- Species Cirsium bubakianum Rohlena ex Petr. accepted as Cirsium boujartii (Piller & Mitterp.) Sch.Bip.
- Species Cirsium buchingeri Sch.Bip. ex Schweinf.
- Species Cirsium buchwaldii O.Hoffm. accepted as Afrocirsium buchwaldii (O.Hoffm.) Calleja, Garcia-Jacas, Moreyra & Susanna
- Species Cirsium buergeri Miq.
- Species Cirsium bulbosum Willk. accepted as Cirsium engelmannii Rydb.
- Species Cirsium bulbosum (Lam.) DC. accepted as Cirsium tuberosum (L.) All.
- Species Cirsium bulbosum Lam. accepted as Cirsium monspessulanum (L.) Hill
- Species Cirsium bulgaricum DC.
- Species Cirsium burgalense Elias & Sennen
- Species Cirsium buschianum Kharadze
- Species Cirsium butleri (Rydb.) Rydb. accepted as Cirsium scariosum var. scariosum Nutt.
- Species Cirsium butleri (Rydb.) Petr. accepted as Cirsium scariosum var. scariosum Nutt.
- Species Cirsium byzantinum Steud.
- Species Cirsium cadubricum Pamp.
- Species Cirsium calcareum (M.E.Jones) Wooton & Standl.
- Species Cirsium calcicola Nakai accepted as Cirsium dipsacolepis var. calcicola (Nakai) Kitam.
- Species Cirsium californicum Jeps.
- Species Cirsium californicum A.Gray accepted as Cirsium occidentale var. californicum (A.Gray) D.J.Keil & C.E.Turner
- Species Cirsium callilepe Jeps.
- Species Cirsium callilepis (Greene) Jeps. accepted as Cirsium remotifolium var. odontolepis Petr.
- Species Cirsium callosum
- Species Cirsium calopodum Gand.
- Species Cirsium calvescens Soják accepted as Cirsium aduncum Fisch. & C.A.Mey. ex DC.
- Species Cirsium camptolepis (Boiss.) Holmboe
- Species Cirsium campylolepis Bornm. accepted as Cirsium bracteosum DC.
- Species Cirsium campylon H.Sharsm. accepted as Cirsium fontinale var. campylon (H.Sharsm.) Pilz ex D.J.Keil & C.E.Turner
- Species Cirsium candelabrum Griseb.
- Species Cirsium candidissimum Dammer
- Species Cirsium candidissimum Damm.
- Species Cirsium candidissimum (Greene) Davidson & Moxley accepted as Cirsium occidentale var. candidissimum (Greene) J.F.Macbr.
- Species Cirsium candissimum Greene
- Species Cirsium candolleanum H.Buek accepted as Cirsium polycephalum DC.
- Species Cirsium candolleanum Nägeli accepted as Cirsium hypoleucum DC.
- Species Cirsium canescens Nutt.
- Species Cirsium canescens A.Gray accepted as Cirsium neomexicanum A.Gray
- Species Cirsium canovirens (Rydb.) Petr. accepted as Cirsium cymosum var. canovirens (Rydb.) D.J.Keil
- Species Cirsium canovirens (Rydb.) Rydb. accepted as Cirsium cymosum var. canovirens (Rydb.) D.J.Keil
- Species Cirsium canum M.Bieb.
- Species Cirsium canum (L.) All. accepted as Dasyphyllum tomentosum var. tomentosum
- Species Cirsium capitatum Arv.-Touv. accepted as Cirsium variegatum Arv.-Touv.
- Species Cirsium capnoideum Gand.
- Species Cirsium caput-medusae Sommier & Levier
- Species Cirsium caput-medusae Schur ex Nyman accepted as Cirsium spinosissimum (L.) Scop.
- Species Cirsium caput-medusae Petr. accepted as Cirsium sommieri Petr.
- Species Cirsium cardo-leonis Lojac.
- Species Cirsium carduophilum Arv.-Touv.
- Species Cirsium carinthiacum Flieschm.
- Species Cirsium carlinoides Fisch. ex DC.
- Species Cirsium carlinoides Fisch.
- Species Cirsium carlinoides (Cass.) B.Fedtsch. accepted as Echenais carlinoides Cass.
- Species Cirsium carminans Dumort.
- Species Cirsium carniolicum Scop.
- Species Cirsium carniolicum All. accepted as Cirsium rivulare (Jacq.) All.
- Species Cirsium carolinianum (Walter) Fernald & B.G.Schub.
- Species Cirsium carolorum C.Jenner ex Nyman accepted as Cirsium heterophyllum (L.) Hill
- Species Cirsium carthamoides (Willd.) Link accepted as Rhaponticum carthamoides (Willd.) Iljin
- Species Cirsium casabonae (L.) DC. accepted as Ptilostemon casabonae (L.) Greuter
- Species Cirsium caspicum Petr.
- Species Cirsium cassium P.H.Davis & Parris
- Species Cirsium castellanum Willk. accepted as Cirsium pyrenaicum (Jacq.) All.
- Species Cirsium castriferrei Borbás
- Species Cirsium catalaunicum Sennen
- Species Cirsium cataonicum Boiss. & Hausskn. accepted as Cirsium leucocephalum (Willd.) Spreng.
- Species Cirsium caucasicum Petr.
- Species Cirsium cavaleriei (H.Lév.) H.Lév. accepted as Cirsium monocephalum (Vaniot) H.Lév.
- Species Cirsium celakovskianum K.Knaf
- Species Cirsium celakovskianum Knaf accepted as Cirsium arvense (L.) Scop.
- Species Cirsium cenisium Arv.-Touv.
- Species Cirsium centaureae Cockerell ex Daniel.s
- Species Cirsium centaureae (Rydb.) K.Schum. accepted as Cirsium clavatum var. americanum (A.Gray) D.J.Keil
- Species Cirsium cephalotes Boiss.
- Species Cirsium cerberus (Vaniot) H.Lév. accepted as Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium cernuum Lag.
- Species Cirsium cervini W.D.J.Koch accepted as Cirsium spinosissimum (L.) Scop.
- Species Cirsium chabertii Gand.
- Species Cirsium chailleti W.D.J.Koch
- Species Cirsium chailletii Gaudin accepted as Cirsium palustre (L.) Coss. ex Scop.
- Species Cirsium chamaepeuce (L.) Ten. accepted as Ptilostemon chamaepeuce (L.) Less.
- Species Cirsium chanroenicum (Nakai) Nakai
- Species Cirsium charadzeae (Kimer.) Czerep. accepted as Lamyropsis charadzeae Kimer.
- Species Cirsium charkeviczii Barkalov
- Species Cirsium chatenieri Legrand accepted as Cirsium eriophorum (L.) Scop.
- Species Cirsium chellyense R.J.Moore & Frankton accepted as Cirsium arizonicum var. chellyense (R.J.Moore & Frankton) D.J.Keil
- Species Cirsium chelmeum Orph. accepted as Cirsium candelabrum Griseb.
- Species Cirsium chienii Chang accepted as Cirsium leo Nakai & Kitag.
- Species Cirsium chihuahuense G.L.Nesom
- Species Cirsium chikabumiense Kadota
- Species Cirsium chikushiense Koidz.
- Species Cirsium chinense Gardner & Champ. accepted as Cirsium lineare (Thunb.) Sch.Bip.
- Species Cirsium chium (Jacq.) Boiss.
- Species Cirsium chium (Jacq.) DC. accepted as Cirsium chium (Jacq.) Boiss.
- Species Cirsium chlorocomos Sommier & Levier
- Species Cirsium chlorolepis Petr. ex Hand.-Mazz.
- Species Cirsium chodatii Barb.-Gamp. accepted as Cirsium eriophorum (L.) Scop.
- Species Cirsium chokaiense Kitam.
- Species Cirsium chrismarii (Klatt) Petr. accepted as Cirsium horridulum Michx.
- Species Cirsium chrysacanthum (Ball) Jahand.
- Species Cirsium chrysolepis C.Shih
- Species Cirsium chuskaense R.J.Moore & Frankton accepted as Cirsium arizonicum var. chellyense (R.J.Moore & Frankton) D.J.Keil
- Species Cirsium chynysicum Boiss. accepted as Cirsium haussknechtii Boiss.
- Species Cirsium cichoraceum Spreng. accepted as Klasea flavescens subsp. cichoracea (L.) Greuter & Wagenitz
- Species Cirsium ciliatiforme Petr.
- Species Cirsium ciliatoaffine Besser accepted as Cirsium serrulatum (M.Bieb.) Fisch.
- Species Cirsium ciliatum (Murray) Moench
- Species Cirsium ciliatum M.Bieb.
- Species Cirsium cilicicum P.H.Davis & Parris
- Species Cirsium ciliolatum (L.F.Hend.) J.T.Howell
- Species Cirsium cilliacum Tardent accepted as Cirsium ciliatum (Murray) Moench
- Species Cirsium cirsiophilum Arv.-Touv.
- Species Cirsium cladophorum Gand.
- Species Cirsium clavatum (M.E.Jones) Petr.
- Species Cirsium clavatum (M.E.Jones) Rydb. accepted as Cirsium clavatum (M.E.Jones) Petr.
- Species Cirsium clokeyi S.F.Blake
- Species Cirsium coahuilense G.B.Ownbey & Pinkava
- Species Cirsium coahuilense Ownbey & Pinkava
- Species Cirsium coccinatum Osterh. accepted as Cirsium drummondii Torr. & A.Gray
- Species Cirsium collivagum Gand.
- Species Cirsium colmeiroanum Sennen
- Species Cirsium colmeroi Sennen & Pau
- Species Cirsium coloradense (Rydb.) Cockerell ex Daniels accepted as Cirsium scariosum var. coloradense (Rydb.) D.J.Keil
- Species Cirsium coloradense (Rydb.) Cockerell accepted as Cirsium scariosum var. coloradense (Rydb.) D.J.Keil
- Species Cirsium coloradensis (Rydb.) Cockerell
- Species Cirsium comosum (Franch. & Sav.) Matsum. accepted as Cirsium nipponicum var. incomptum (Maxim.) Kitam. ex Ohwi
- Species Cirsium compactum Lam. accepted as Cirsium monspessulanum (L.) Hill
- Species Cirsium concilii Porta
- Species Cirsium confertissimum Nakai
- Species Cirsium congdonii R.J.Moore & Frankton accepted as Cirsium scariosum var. congdonii (R.J.Moore & Frankton) D.J.Keil
- Species Cirsium congestissimum Kitam.
- Species Cirsium congestum Fisch. & C.A.Mey. ex DC. accepted as Cirsium sorocephalum Fisch. & C.A.Mey.
- Species Cirsium connexum Kitam.
- Species Cirsium consanguineum DC. accepted as Cirsium sorocephalum Fisch. & C.A.Mey.
- Species Cirsium consociatum S.F.Blake
- Species Cirsium conspicuum (G.Don) Sch.Bip.
- Species Cirsium controversum DC. accepted as Cirsium spinosissimum (L.) Scop.
- Species Cirsium corbariense Sennen accepted as Cirsium richterianum Gillot
- Species Cirsium coreanum Nakai
- Species Cirsium coryletorum Kom.
- Species Cirsium cosmelii Fisch. & C.A.Mey. ex Hohen.
- Species Cirsium costae (Sennen & Pau) Petr. accepted as Cirsium richterianum subsp. costae (Sennen & Pau) Talavera & Valdés
- Species Cirsium costaricense Klatt ex T.Durand & Piit.
- Species Cirsium costaricense (Pol.) Petr. accepted as Cirsium mexicanum DC.
- Species Cirsium costaricensis (Pol.) Klatt ex T.Durand & Pittier accepted as Cirsium mexicanum DC.
- Species Cirsium coulteri Harv. & Gray
- Species Cirsium coulteri Jeps. accepted as Cirsium occidentale var. venustum (Greene) Jeps.
- Species Cirsium coulteri Harv. & A.Gray accepted as Cirsium occidentale var. coulteri (Harv. & A.Gray) Jeps.
- Species Cirsium crassicaule (Greene) Jeps.
- Species Cirsium crassum Petr.
- Species Cirsium creticum (Lam.) d'Urv.
- Species Cirsium crinitum Boiss. ex DC. accepted as Cirsium vulgare subsp. crinitum (Boiss. ex DC.) Arènes
- Species Cirsium cryptocephalum Sch.Bip. ex Boiss. accepted as Cyanus depressus (M.Bieb.) Soják
- Species Cirsium csepeliense Borbás
- Species Cirsium culebraense Ackerf.
- Species Cirsium curiosum Gand.
- Species Cirsium cyanoides Hill accepted as Jurinea cyanoides (L.) Rchb.
- Species Cirsium cylleneum Halácsy accepted as Cirsium hypopsilum Boiss. & Heldr.
- Species Cirsium cymosum (Greene) J.T.Howell accepted as Cirsium cymosum var. cymosum
- Species Cirsium cynaroides Griseb. accepted as Cirsium affine Tausch
- Species Cirsium cynaroides (Lam.) Spreng. accepted as Lamyropsis cynaroides (Lam.) Dittrich
- Species Cirsium czepeliense herb.rouy ex E.G.Camus
- Species Cirsium czerkessicum Kharadze
- Species Cirsium daghestanicum Kharadze
- Species Cirsium darwasicum (C.Winkl.) Iljin
- Species Cirsium davisianum Kit Tan & Sorger
- Species Cirsium davisii Cronquist accepted as Cirsium inamoenum var. davisii (Cronquist) D.J.Keil
- Species Cirsium dealbatum M.Bieb.
- Species Cirsium decipiens Nyman accepted as Cirsium acaulon (L.) Scop.
- Species Cirsium decoloratum W.D.J.Koch accepted as Cirsium acaulon (L.) Scop.
- Species Cirsium decurrens Griff.
- Species Cirsium decussatum Janka
- Species Cirsium defloratum Scop. accepted as Carduus defloratus L.
- Species Cirsium degenii Petr.
- Species Cirsium dender Friis accepted as Nuriaea dender (Friis) Susanna, Calleja & Moreyra
- Species Cirsium dentatum (Forssk.) DC. accepted as Carthamus dentatus Vahl
- Species Cirsium depilatum Boiss. & Balansa accepted as Cirsium pubigerum (Desf.) DC.
- Species Cirsium desertorum Janka ex Nyman accepted as Cirsium ciliatum (Murray) Moench
- Species Cirsium desertorum Fisch. ex Link accepted as Cirsium alatum (S.G.Gmel.) Bobrov
- Species Cirsium diabolicum Kitam. accepted as Cirsium japonicum var. diabolicum (Kitam.) Kitam. ex Ohwi
- Species Cirsium diacantha (Labill.) DC. accepted as Ptilostemon diacantha (Labill.) Greuter
- Species Cirsium diacantha (Labill.) Fisch. accepted as Ptilostemon diacantha (Labill.) Greuter
- Species Cirsium diacanthum
- Species Cirsium diamantiacum (Nakai) Nakai accepted as Cirsium schantarense Trautv. & C.A.Mey.
- Species Cirsium didieri Arènes
- Species Cirsium diffusum Petr.
- Species Cirsium diffusum (Eastw.) Rydb. accepted as Cirsium calcareum (M.E.Jones) Wooton & Standl.
- Species Cirsium digeneum Burnat ex Verl., Arv.-Touv. & Faure
- Species Cirsium digeneum Burnat ex Verl, Arv.-Touv. & Faure
- Species Cirsium dimorphum Petr. ex Grossh.
- Species Cirsium dinaricum Vandas accepted as Cirsium eriophorum (L.) Scop.
- Species Cirsium dioicum Cass. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium dipsacolepis (Maxim.) Matsum.
- Species Cirsium dirmilense R.M.Burton
- Species Cirsium discolor (Muhl. ex Willd.) Spreng.
- Species Cirsium discolor Goller & Huter
- Species Cirsium discolor Hort. ex Steud. accepted as Cirsium ciliatum (Murray) Moench
- Species Cirsium disjunctum Gand.
- Species Cirsium dispermum Petr.
- Species Cirsium dissectum (L.) Hill
- Species Cirsium dissimile Porta ex Vacc.
- Species Cirsium dissimile Porta
- Species Cirsium distans Huter
- Species Cirsium diversifolium DC. accepted as Cirsium altissimum (L.) Hill
- Species Cirsium dollinerii Sch.Bip. ex Hausm. accepted as Cirsium pannonicum (L.f.) Link
- Species Cirsium dolopicum Formánek
- Species Cirsium dominii M.Schulze
- Species Cirsium domonii Kadota
- Species Cirsium douglasii DC.
- Species Cirsium drijeri Rchb.f. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium drummondii Torr. & A.Gray
- Species Cirsium dubium Lojac. accepted as Cirsium vulgare subsp. crinitum (Boiss. ex DC.) Arènes
- Species Cirsium ducellieri Maire
- Species Cirsium durangense (Greenm.) G.B.Ownbey
- Species Cirsium duriusculum K.Koch accepted as Cirsium alatum (S.G.Gmel.) Bobrov
- Species Cirsium dyris Jahand. & Maire
- Species Cirsium eatonii (A.Gray) B.L.Rob.
- Species Cirsium ebergassingense Petr.
- Species Cirsium echinatum (Desf.) DC.
- Species Cirsium echinocephalum (Willd.) M.Bieb. accepted as Ptilostemon echinocephalus (Willd.) Greuter
- Species Cirsium echinocephalum (Willd.) Fisch. accepted as Ptilostemon echinocephalus (Willd.) Greuter
- Species Cirsium echinopifolium Boiss. ex Tchich.
- Species Cirsium echinus (M.Bieb.) Hand.-Mazz.
- Species Cirsium echinus (M.Bieb.) Sch.Bip. accepted as Cirsium echinus (M.Bieb.) Hand.-Mazz.
- Species Cirsium edule Nutt.
- Species Cirsium effusum (Maxim.) Matsum. accepted as Cirsium calcareum (M.E.Jones) Wooton & Standl.
- Species Cirsium ehrenbergianum Sch.Bip.
- Species Cirsium ehrenbergii Sch.Bip.
- Species Cirsium ekimianum Yıldız & Dirmenci
- Species Cirsium elatius Link accepted as Cirsium polyanthemum (L.) Spreng.
- Species Cirsium elatum Tod.
- Species Cirsium elatum Porta
- Species Cirsium elatum Saut.
- Species Cirsium elbrusense Sommier & Levier accepted as Cirsium pubigerum var. elbrusense (Sommier & Levier) Petr.
- Species Cirsium elegans Willd. ex Spreng. accepted as Ancathia igniaria (Spreng.) DC.
- Species Cirsium eliasennenii Pau
- Species Cirsium eliasianum Kit Tan & Sorger
- Species Cirsium eliasii Sennen & Pau
- Species Cirsium ellenbergii Bornm.
- Species Cirsium elodes M.Bieb. accepted as Cirsium alatum (S.G.Gmel.) Bobrov
- Species Cirsium empedocleanum Lojac.
- Species Cirsium engelmannii Rydb.
- Species Cirsium englerianum O.Hoffm. accepted as Nuriaea engleriana (O. Hoffm.) Susanna, Calleja & Moreyra
- Species Cirsium epiroticum Petr.
- Species Cirsium eremogenes Gand.
- Species Cirsium eriocephalum Wallr. accepted as Cirsium eriophorum (L.) Scop.
- Species Cirsium eriocephalum A.Gray accepted as Cirsium eatonii var. eriocephalum (A.Gray) D.J.Keil
- Species Cirsium eriophilus K.Schum.
- Species Cirsium eriophoroides (Hook.f.) Petr.
- Species Cirsium eriophoroideum (Hook.f.) H.Lév.
- Species Cirsium eriophorum (L.) Scop.
- Species Cirsium erisithales (Jacq.) Scop.
- Species Cirsium erisithaloides Murr
- Species Cirsium erisithaloides Huter ex Treuinf.
- Species Cirsium erosum Cockerell ex Daniels
- Species Cirsium erosum (Rydb.) K.Schum. accepted as Cirsium scariosum var. coloradense (Rydb.) D.J.Keil
- Species Cirsium erosum (Rydb.) Cockerell accepted as Cirsium scariosum var. coloradense (Rydb.) D.J.Keil
- Species Cirsium erucagineum DC.
- Species Cirsium erythrolepis K.Koch
- Species Cirsium erythrolepis Freyn ex Petr. accepted as Cirsium sommieri Petr.
- Species Cirsium esculentum (Siev.) C.A.Mey.
- Species Cirsium euxinum Kharadze
- Species Cirsium exaltatum Brügger
- Species Cirsium excelsius (B.L.Rob.) Petr.
- Species Cirsium exigium Bubani accepted as Cirsium acaulon (L.) Scop.
- Species Cirsium exscapum Fisch.
- Species Cirsium extraneum Beck
- Species Cirsium fabium Porta ex Kern.
- Species Cirsium falcatum Turcz. ex DC. accepted as Cirsium pendulum Fisch. ex DC.
- Species Cirsium falcatum Turcz. accepted as Cirsium pendulum Fisch. ex DC.
- Species Cirsium falconeri (Hook.f.) Petr.
- Species Cirsium fallax Fisch. & C.A.Mey. accepted as Cirsium aduncum Fisch. & C.A.Mey. ex DC.
- Species Cirsium fallax Fisch. & C.A.Mey. ex Hohen. accepted as Cirsium aduncum Fisch. & C.A.Mey. ex DC.
- Species Cirsium fallax Franch. accepted as Cirsium acaulon (L.) Scop.
- Species Cirsium fangii Petr.
- Species Cirsium fani Sennen
- Species Cirsium fanjingshanense C.Shih
- Species Cirsium fargesii (Franch.) Diels
- Species Cirsium faucium Petr.
- Species Cirsium fauriei Nakai
- Species Cirsium ferox (L.) DC.
- Species Cirsium ferox Schur ex Nyman accepted as Cirsium ciliatum (Murray) Moench
- Species Cirsium ferum Kitam.
- Species Cirsium ficifolium Fisch. accepted as Synurus deltoides (Aiton) Nakai
- Species Cirsium filipendulinum
- Species Cirsium filipendulum Lange
- Species Cirsium filipendulum Engelm. ex A.Gray
- Species Cirsium filipendulum Engelm. accepted as Cirsium engelmannii Rydb.
- Species Cirsium fimbriatum (M.Bieb.) Spreng. accepted as Cirsium osseticum (Adams) Petr.
- Species Cirsium finissimum Rota ex Rodegher
- Species Cirsium firmum (C.Presl) Arcang. accepted as Cirsium vulgare subsp. crinitum (Boiss. ex DC.) Arènes
- Species Cirsium fischerianum Andrz. ex Trautv.
- Species Cirsium fissum Ausserd. ex Treuinf.
- Species Cirsium flaccidum (Small) Petr. accepted as Cirsium carolinianum (Walter) Fernald & B.G.Schub.
- Species Cirsium flaccidum Small accepted as Cirsium carolinianum (Walter) Fernald & B.G.Schub.
- Species Cirsium flavescens Lam. accepted as Cirsium oleraceum (L.) Scop.
- Species Cirsium flavescens W.D.J.Koch accepted as Cirsium hypoleucum DC.
- Species Cirsium flavispina Boiss. ex DC. accepted as Cirsium pyrenaicum (Jacq.) All.
- Species Cirsium flavispinum Boiss.
- Species Cirsium flavisquamatum Kitam.
- Species Cirsium fleischeri Podp.
- Species Cirsium fleischmannii Khek
- Species Cirsium floccosum (Rydb.) Rydb. accepted as Cirsium tracyi (Rydb.) Petr.
- Species Cirsium floccosum (Rydb.) Petr. accepted as Cirsium tracyi (Rydb.) Petr.
- Species Cirsium flodmanii (Rydb.) Arthur
- Species Cirsium foliosum (Hook.) DC.
- Species Cirsium foliosum Rhiner
- Species Cirsium fominii Petr.
- Species Cirsium fontinale (Greene) Jeps.
- Species Cirsium fontqueri Romo
- Species Cirsium formosanum Sasaki
- Species Cirsium forrestii (Diels) H.Lév. accepted as Cirsium henryi (Franch.) Diels
- Species Cirsium forsteri Loudon accepted as Cirsium palustre (L.) Coss. ex Scop.
- Species Cirsium fraserianum Druce
- Species Cirsium fraternum DC. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium frayi Gand.
- Species Cirsium freyerianum W.D.J.Koch
- Species Cirsium frickii Fisch. & C.A.Mey. accepted as Cirsium rhizocephalum C.A.Mey.
- Species Cirsium fruticosum (Desf.) Holmboe accepted as Ptilostemon chamaepeuce (L.) Less.
- Species Cirsium fulvispinum Walp. accepted as Cirsium flavispinum Boiss.
- Species Cirsium funkiae Ackerf.
- Species Cirsium furiens Griseb. & Schenk
- Species Cirsium furusei Kitam.
- Species Cirsium fuscotrichum Chang
- Species Cirsium fusenense Nakai
- Species Cirsium gaditanum Talavera & Valdés accepted as Cirsium pyrenaicum subsp. gaditanum (Talavera & Valdés) Talavera & Valdés
- Species Cirsium gadukense Petr.
- Species Cirsium gagnidzei Kharadze
- Species Cirsium gaillardotii Boiss. accepted as Cirsium creticum subsp. gaillardotii (Boiss.) P.H.Davis & Parris
- Species Cirsium galactites Hill accepted as Galactites tomentosa Moench
- Species Cirsium galaticum Freyn accepted as Cirsium sintenisii Freyn
- Species Cirsium galissierianum E.G.Camus
- Species Cirsium galissierianum Camus
- Species Cirsium ganderi Huter ex Treuinf.
- Species Cirsium ganjuense Kitam.
- Species Cirsium gelmianum Porta ex Vacc.
- Species Cirsium gelmianum Porta
- Species Cirsium gerhardtii Sch.Bip. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium gibsonii Druce accepted as Carduus gibsonii
- Species Cirsium giganteum (Desf.) Spreng. accepted as Cirsium scabrum (Poir.) Bonnet & Barratte
- Species Cirsium gigas Ucria accepted as Cirsium scabrum (Poir.) Bonnet & Barratte
- Species Cirsium gilense (Wooton & Standl.) Wooton & Standl. accepted as Cirsium parryi (A.Gray) Petr.
- Species Cirsium giraudiasii (Sennen & Pau) Sennen & Pau accepted as Cirsium richterianum subsp. giraudiasii (Sennen & Pau) Talavera & Valdés
- Species Cirsium glaberrimum (Petr.) Petr.
- Species Cirsium glabratum Kitam.
- Species Cirsium glabrifolium (C.Winkl.) O.Fedtsch. & B.Fedtsch.
- Species Cirsium glabrifolium Petr. accepted as Cirsium glabrifolium (C.Winkl.) O.Fedtsch. & B.Fedtsch.
- Species Cirsium glabrum DC.
- Species Cirsium glaucescens Treuinf.
- Species Cirsium globiferum Gand.
- Species Cirsium glutinosum Lam. accepted as Cirsium hypoleucum DC.
- Species Cirsium gmelinii (Spreng.) Tausch accepted as Cirsium esculentum (Siev.) C.A.Mey.
- Species Cirsium gnaphalodes (Cirillo) Spreng. accepted as Ptilostemon gnaphaloides (Cirillo) Soják
- Species Cirsium godronii Sch.Bip. ex Nyman accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium golleri Huter ex Oerst.
- Species Cirsium golleri Huter
- Species Cirsium gonzaloi Sennen
- Species Cirsium gracile Rostr. ex Nyman accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium gracile Schur accepted as Cirsium rivulare (Jacq.) All.
- Species Cirsium grahamii A.Gray
- Species Cirsium grandei Petr. accepted as Ptilostemon ×grandei
- Species Cirsium grandiflorum Kitt.
- Species Cirsium grandii Lacaita
- Species Cirsium grandirosuliferum Kadota
- Species Cirsium gratiosum Kitam.
- Species Cirsium grayanum (Maxim.) Nakai
- Species Cirsium greatrexii Miyabe & Kudô accepted as Cirsium alpicola Nakai
- Species Cirsium grecescui Rouy
- Species Cirsium greenei Petr.
- Species Cirsium gregarioides Porta & Rigo ex Pau
- Species Cirsium gregarium Willk. accepted as Cirsium acaulon subsp. gregarium (DC.) Talavera
- Species Cirsium greimleri Bureš
- Species Cirsium gremblichii Treuinf.
- Species Cirsium greneri Rouy
- Species Cirsium grenieri Rouy
- Species Cirsium grettstadtianum Gross
- Species Cirsium griffithii Boiss.
- Species Cirsium griseiforme Petr.
- Species Cirsium griseum H.Lév.
- Species Cirsium griseum Cockerell ex Daniels
- Species Cirsium griseum (Rydb.) K.Schum. accepted as Cirsium clavatum var. americanum (A.Gray) D.J.Keil
- Species Cirsium griseum (Rydb.) Cockerell accepted as Cirsium clavatum var. americanum (A.Gray) D.J.Keil
- Species Cirsium grossheimii Petr.
- Species Cirsium grumosum (Hoffmanns. & Link) Nyman accepted as Cirsium filipendulum Lange
- Species Cirsium grumosum (Hoffmanns. & Link) Willk. & Lange accepted as Cirsium filipendulum Lange
- Species Cirsium grumosum Fisch. & C.A.Mey. accepted as Cirsium rhizocephalum C.A.Mey.
- Species Cirsium guatemalense S.F.Blake
- Species Cirsium gutnickianum M.Loehr
- Species Cirsium gyojanum Kitam.
- Species Cirsium haberianum Gand.
- Species Cirsium hachijoense Nakai
- Species Cirsium hachimantaiense Kadota
- Species Cirsium hagurosanense Kadota
- Species Cirsium hainanense Masam. accepted as Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium hakkaricum P.H.Davis & Parris
- Species Cirsium hakodatense Kudô
- Species Cirsium halacsyi Formánek
- Species Cirsium halleri Tausch
- Species Cirsium hallerianum Hill
- Species Cirsium hallerianum Gaudin accepted as Cirsium spinosissimum (L.) Scop.
- Species Cirsium hallii (A.Gray) M.E.Jones accepted as Cirsium edule Nutt.
- Species Cirsium halophilum Turcz. ex Herder accepted as Cirsium arvense (L.) Scop.
- Species Cirsium hanamakiense Kitam.
- Species Cirsium handaniae Yıldız, Dirmenci & Arabacı
- Species Cirsium handelii Petr. ex Hand.-Mazz.
- Species Cirsium happoense Kadota
- Species Cirsium hargitanum Nyár.
- Species Cirsium hastatum (Lam.) Thell. ex Schinz accepted as Cirsium heterophyllum (L.) Hill
- Species Cirsium hausmannii Treuinf.
- Species Cirsium haussknechtii Boiss.
- Species Cirsium haussmanni Rouy
- Species Cirsium hawaiense (H.Lév.) H.Lév. accepted as Cnicus hawaiensis H.Lév.
- Species Cirsium hawaiensis
- Species Cirsium haynaldii Borbás
- Species Cirsium heiianum Koidz.
- Species Cirsium heldreichii Halácsy
- Species Cirsium helenioides (L.) Hill
- Species Cirsium helenioides All. accepted as Cirsium helenioides (L.) Hill
- Species Cirsium heleophilum Petr. ex Hand.-Mazz. accepted as Cirsium griseum H.Lév.
- Species Cirsium heleophilum Petr. accepted as Cirsium botryodes Petr.
- Species Cirsium hellenicum Halácsy accepted as Cirsium hypopsilum Boiss. & Heldr.
- Species Cirsium hellenicum Boiss. & Orph. ex Boiss. accepted as Cirsium ferox (L.) DC.
- Species Cirsium helleri (Small) Cory accepted as Cirsium texanum Buckley
- Species Cirsium henryi (Franch.) Diels
- Species Cirsium hermonis Boiss. accepted as Cirsium leucocephalum subsp. hermonis (Boiss.) Greuter
- Species Cirsium hesperium (Eastw.) Rydb. accepted as Cirsium eatonii var. hesperium (Eastw.) D.J.Keil
- Species Cirsium hesperium (Eastw.) Petr. accepted as Cirsium eatonii var. hesperium (Eastw.) D.J.Keil
- Species Cirsium heteroanthum Kitam.
- Species Cirsium heterolepis Benth. accepted as Cirsium subcoriaceum (Less.) Sch.Bip. ex Sch.Bip.
- Species Cirsium heteromallum (D.Don) Spreng. accepted as Himalaiella heteromalla (D.Don) Raab-Straube
- Species Cirsium heterophylloides Pavlov accepted as Cirsium helenioides (L.) Hill
- Species Cirsium heterophyllum (L.) Hill
- Species Cirsium heterotrichum Pančić
- Species Cirsium hidaense Kitam. accepted as Cirsium tashiroi var. hidaense (Kitam.) Kadota
- Species Cirsium hidakamontanum Kadota
- Species Cirsium hidalgoense G.L.Nesom
- Species Cirsium hida-paludosum
- Species Cirsium hilgendorfii (Franch. & Sav.) Makino accepted as Cirsium pendulum Fisch. ex DC.
- Species Cirsium hillii (Canby) Fernald accepted as Cirsium pumilum var. hillii (Canby)
- Species Cirsium hippolyti Link ex Steud. accepted as Cirsium creticum (Lam.) d'Urv.
- Species Cirsium hippolyti (Bory & Chaub.) Link accepted as Cirsium creticum (Lam.) d'Urv.
- Species Cirsium hispanicum (Lam.) Lag. accepted as Ptilostemon hispanicus (Lam.) Greuter
- Species Cirsium hispanicum (Lam.) Font Quer & Rothm. accepted as Ptilostemon hispanicus (Lam.) Greuter
- Species Cirsium hispanicum (Lam.) Pau accepted as Ptilostemon hispanicus (Lam.) Greuter
- Species Cirsium hokkokuense Kitam. accepted as Cirsium matsumurae Nakai
- Species Cirsium homolepis Nakai
- Species Cirsium hookerianum Nutt.
- Species Cirsium horiianum Kadota
- Species Cirsium horridulum Michx.
- Species Cirsium horridulum (Torr. & A.Gray) Fernald
- Species Cirsium horridum Formánek
- Species Cirsium horridum Petr.
- Species Cirsium horridum Lag. ex DC.
- Species Cirsium horridum (Adams) Petr. accepted as Cirsium pugnax Sommier & Levier
- Species Cirsium horridum (M.Bieb.) Fisch. accepted as Cirsium caucasicum Petr.
- Species Cirsium horridum (Posp.) Trotter accepted as Cirsium palustre (L.) Coss. ex Scop.
- Species Cirsium horridum (Wimm. & Grab.) Stankov accepted as Dasyphyllum tomentosum var. multiflorum (Baker) Cabrera
- Species Cirsium horridum (Lag.) Lag. accepted as Cynara baetica (Spreng.) Pau
- Species Cirsium hosokawai Kitam.
- Species Cirsium howellii Petr. accepted as Cirsium ciliolatum (L.F.Hend.) J.T.Howell
- Species Cirsium hranicense Petr.
- Species Cirsium huguenini Brügger
- Species Cirsium hugueninii Brügger
- Species Cirsium humboldtense Rydb. accepted as Cirsium neomexicanum A.Gray
- Species Cirsium hungaricum Zsák
- Species Cirsium hupehense Pamp.
- Species Cirsium huteri Hausm. ex Treuinf.
- Species Cirsium hybridum Koch ex DC.
- Species Cirsium hybridum W.D.J.Koch
- Species Cirsium hydrophilum (Greene) Jeps.
- Species Cirsium hygrogenes Gand.
- Species Cirsium hygrophiloides Kharadze accepted as Cirsium pubigerum (Desf.) DC.
- Species Cirsium hygrophilum Boiss.
- Species Cirsium hypoleucum DC.
- Species Cirsium hypopsilum Boiss. & Heldr.
- Species Cirsium hystrix Porta
- Species Cirsium ibericum Sennen & Pau
- Species Cirsium ibukiense Nakai accepted as Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium iburiense Kitam.
- Species Cirsium igniarium Spreng. accepted as Ancathia igniaria (Spreng.) DC.
- Species Cirsium imbricatum (B.L.Rob. ex B.L.Rob. & Greenm.) Petr.
- Species Cirsium imereticum Boiss.
- Species Cirsium inamoenum (Greene) D.J.Keil
- Species Cirsium incanum (S.G.Gmel.) Fisch. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium incanum (S.G.Gmel.) Fisch. ex M.Bieb. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium incelebratum Forta
- Species Cirsium incisum Rouy
- Species Cirsium inclinatum Lam. accepted as Cirsium tuberosum (L.) All.
- Species Cirsium incomptum (Maxim.) Nakai accepted as Cirsium nipponicum var. incomptum (Maxim.) Kitam. ex Ohwi
- Species Cirsium indefensum Kitam. accepted as Cirsium bitchuense Nakai
- Species Cirsium inerme G.Don accepted as Cirsium tuberosum (L.) All.
- Species Cirsium inerme Link accepted as Cirsium affine Tausch
- Species Cirsium inflatum Kitam. accepted as Cirsium nipponicum var. yoshinoi (Nakai) Kitam. ex Ohwi
- Species Cirsium inornatum (Wooton & Standl.) Wooton & Standl. accepted as Cirsium parryi (A.Gray) Petr.
- Species Cirsium insubricum Moretti ex Bertol. accepted as Cirsium eriophorum (L.) Scop.
- Species Cirsium integriusculum Gand.
- Species Cirsium intermedium
- Species Cirsium interpositum Petr.
- Species Cirsium intraspinulosum Javorka
- Species Cirsium intraspinulosum Jáv. accepted as Cirsium boujartii subsp. wettsteinii Petr.
- Species Cirsium inuloides Rchb. accepted as Cirsium helenioides (L.) Hill
- Species Cirsium inundatum Makino
- Species Cirsium involucratum DC. accepted as Cirsium verutum (D.Don) Spreng.
- Species Cirsium iowense (Pammel) Fernald accepted as Cirsium altissimum (L.) Hill
- Species Cirsium iranicum Petr.
- Species Cirsium iraqense Petr. accepted as Cirsium pubigerum var. spinosum Petr.
- Species Cirsium irumtiense Kitam. accepted as Cirsium brevicaule A.Gray
- Species Cirsium ishizuchiense (Kitam.) Kadota
- Species Cirsium isophyllum (Petr.) Grossh.
- Species Cirsium ispolatovi Iljin
- Species Cirsium ispolatovii Iljin ex Tzvelev
- Species Cirsium italicum (Savi) DC.
- Species Cirsium ito-kojianum Kadota
- Species Cirsium jaegeri F.W.Schultz
- Species Cirsium jaegeri F.Schultz
- Species Cirsium jaliscoense G.L.Nesom
- Species Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium jaubertianum Sennen & Septimin accepted as ×Cirsio-carduus jaubertianus (Sennen & Septimin) Arènes
- Species Cirsium javalambrense Sennen
- Species Cirsium jeanjeanii Arènes
- Species Cirsium joannae S.L.Welsh, N.D.Atwood & L.C.Higgins
- Species Cirsium jonasii Sennen
- Species Cirsium jorullense (Kunth) Spreng.
- Species Cirsium joschii Pacher
- Species Cirsium jouffroyi Neyra & E.G.Camus
- Species Cirsium jouffroyi Neyra & Camus
- Species Cirsium jucundum (C.Winkl.) Iljin
- Species Cirsium judicariense Porta ex Petr. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium juratzkae Reichardt
- Species Cirsium kagamontanum Nakai
- Species Cirsium kaimaense Kitam. accepted as Cirsium vlassovianum Fisch. ex DC.
- Species Cirsium kamtschaticum Ledeb. ex DC.
- Species Cirsium karduchorum Petr.
- Species Cirsium katoanum Kadota
- Species Cirsium kawakamii Hayata
- Species Cirsium kelseyi (Rydb.) Petr. accepted as Cirsium scariosum var. coloradense (Rydb.) D.J.Keil
- Species Cirsium kelseyi (Rydb.) Rydb. accepted as Cirsium scariosum var. coloradense (Rydb.) D.J.Keil
- Species Cirsium kemulariae Kharadze accepted as Cirsium chlorocomos Sommier & Levier
- Species Cirsium kenji-horieanum Kadota
- Species Cirsium kerneri Ausserd. ex Treuinf.
- Species Cirsium ketzkhovelii Kharadze accepted as Cirsium daghestanicum Kharadze
- Species Cirsium khekii Murr
- Species Cirsium killiasii Brügger
- Species Cirsium kirbense Pomel
- Species Cirsium kirishimense Kadota & Mas.Saito
- Species Cirsium kisoense (T.Yamaz. & K.Asano) Kadota
- Species Cirsium kitagoense Nakai accepted as Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium kiusianum Nakai accepted as Cirsium suffultum (Maxim.) Matsum.
- Species Cirsium kochianum Loehr accepted as Cirsium palustre (L.) Coss. ex Scop.
- Species Cirsium koeieanum Petr. accepted as Cirsium aitchisonii Boiss.
- Species Cirsium komarovii Schischk.
- Species Cirsium kornhuberi Heimerl
- Species Cirsium korsakoviense H.Lév. & Vaniot
- Species Cirsium kosmelii (Adams) Fisch. ex Hohen.
- Species Cirsium kosmelii Boiss.
- Species Cirsium kosnelii
- Species Cirsium kotschyanum Boiss. accepted as Cirsium libanoticum DC.
- Species Cirsium kozlovskyi Petr.
- Species Cirsium kretschmeri Rothm. & O.Schwarz
- Species Cirsium kujuense Kadota
- Species Cirsium kurobense Honda accepted as Cirsium norikurense Nakai
- Species Cirsium kurzezowianum
- Species Cirsium kusnezowianum Sommier & Levier accepted as Cirsium pseudopersonata subsp. kusnezowianum (Sommier & Levier) Petr.
- Species Cirsium lacaitae Petr.
- Species Cirsium lacaitae Petr. ex Lacaita
- Species Cirsium lacaitai Petr.
- Species Cirsium laceratum Arv.-Touv.
- Species Cirsium lacerum (Rydb.) Rydb. accepted as Cirsium scariosum var. scariosum Nutt.
- Species Cirsium lacerum (Rydb.) Petr. accepted as Cirsium scariosum var. scariosum Nutt.
- Species Cirsium lachenalii DC.
- Species Cirsium lachenalii W.D.J.Koch accepted as Cirsium acaulon (L.) Scop.
- Species Cirsium laciniatum Nakai accepted as Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium laciniatum Doell ex Nyman accepted as Cirsium palustre (L.) Coss. ex Scop.
- Species Cirsium lacinulatum Nakai accepted as Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium lacteum Schleich. ex W.Koch accepted as Cirsium palustre (L.) Coss. ex Scop.
- Species Cirsium lactucinum Rydb. accepted as Cirsium rydbergii Petr.
- Species Cirsium laeve Moench accepted as Cirsium tataricum DC.
- Species Cirsium laevigatum Tausch accepted as Cirsium arvense (L.) Scop.
- Species Cirsium lamottei Neyra & Camus
- Species Cirsium lamottei Neyra & G.Camus.
- Species Cirsium lamprophyllum Herbich
- Species Cirsium lamyroides Tamamsch.
- Species Cirsium lanatum (Roxb. ex Willd.) Spreng.
- Species Cirsium lanceolatiforme Dörfl.
- Species Cirsium lanceolatum (L.) Hill accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium lanceolatum (L.) Scop. accepted as Cirsium vulgare (Savi) Ten.
- Subspecies Cirsium lanceolatum subsp. lanceolatum accepted as Cirsium lanceolatum (L.) Scop.
- Subspecies Cirsium lanceolatum subsp. sylvaticum (Tausch) Arènes accepted as Cirsium vulgare (Savi) Ten.
- Variety Cirsium lanceolatum var. hypoleucum DC. accepted as Cirsium vulgare (Savi) Ten.
- Variety Cirsium lanceolatum var. lanceolatum accepted as Cirsium lanceolatum (L.) Scop.
- Variety Cirsium lanceolatum var. nemorale accepted as Cirsium vulgare (Savi) Ten.
- Variety Cirsium lanceolatum var. rhiphaeum Pau & Font Quer accepted as Cirsium vulgare (Savi) Ten.
- Variety Cirsium lanceolatum var. vulgare accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium lanceolatus Hoffm. ex Hemsl.
- Species Cirsium laniflorum (M.Bieb.) Fisch.
- Species Cirsium laniflorum M.Bieb.
- Species Cirsium lanigerum Nägeli accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium lappaceum (M.Bieb.) Fisch. accepted as Cirsium leucocephalum subsp. penicillatum (K.Koch) Greuter
- Species Cirsium lappaceum Lam. accepted as Carduus personata (L.) Jacq.
- Species Cirsium lappoides (Less.) Sch.Bip.
- Species Cirsium laterifolium (Osterh.) Rydb. accepted as Cirsium scariosum var. americanum (A.Gray) D.J.Keil
- Species Cirsium laterifolium (Osterh.) Petr. accepted as Cirsium scariosum var. americanum (A.Gray) D.J.Keil
- Species Cirsium latifolium Lowe
- Species Cirsium latinervium Formánek
- Species Cirsium laushanense Yabe accepted as Cirsium lineare (Thunb.) Sch.Bip.
- Species Cirsium laxiflorum
- Species Cirsium lecontei Torr. & A.Gray
- Species Cirsium ledebourii Steud.
- Species Cirsium leducei (Franch.) H.Lév.
- Species Cirsium leducii H.Lév.
- Species Cirsium legrandii Sennen
- Species Cirsium leo Nakai & Kitag.
- Species Cirsium lepskyi Petr. accepted as Cirsium interpositum Petr.
- Species Cirsium leptophyllum (Pau & Font Quer) Maire accepted as Ptilostemon leptophyllus (Pau & Font Quer) Greuter
- Species Cirsium leucanicum Lojac. accepted as Cirsium vulgare subsp. crinitum (Boiss. ex DC.) Arènes
- Species Cirsium leucocephalum (Willd.) Spreng.
- Species Cirsium leucocephalum K.Koch accepted as Cirsium haussknechtii Boiss.
- Species Cirsium leuconeurum Boiss. & Heldr.
- Species Cirsium leuconeurum Boiss. & Hausskn. accepted as Cirsium strigosum (M.Bieb.) Fisch.
- Species Cirsium leucophanum Schur accepted as Cirsium laxiflorum
- Species Cirsium leucopsis DC.
- Species Cirsium leucostylum Moench accepted as Carduus defloratus L.
- Species Cirsium libanoticum DC.
- Species Cirsium lidjiangense Petr. & Hand.-Mazz.
- Species Cirsium liebmanii Sch.Bip.
- Species Cirsium liebmannii Sch.Bip. ex Klatt
- Species Cirsium ligulare Boiss.
- Species Cirsium limophilum Petr.
- Species Cirsium lineare (Thunb.) Sch.Bip.
- Species Cirsium linearifolium
- Species Cirsium linkianum M.Loehr
- Species Cirsium linkii Nyman accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium lipskyi Klokov accepted as Cirsium laniflorum (M.Bieb.) Fisch.
- Species Cirsium litorale Maxim. accepted as Cirsium schantarense Trautv. & C.A.Mey.
- Species Cirsium liukiuense Nakai accepted as Cirsium brevicaule A.Gray
- Species Cirsium lobelii Ten.
- Species Cirsium lojkae Somm & Levier
- Species Cirsium lokense Conrath & Freyn ex Freyn accepted as Cirsium kosmelii (Adams) Fisch. ex Hohen.
- Species Cirsium lomatolepis (Hemsl.) Petr.
- Species Cirsium loncholepis Petr. accepted as Cirsium scariosum var. citrinum (Petr.) D.J.Keil
- Species Cirsium longebracteatum Formánek ex Petr.
- Species Cirsium longepedunculatum Kitam.
- Species Cirsium longespinosum Tod. ex Nyman accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium longiflorum Kharadze accepted as Cirsium gagnidzei Kharadze
- Species Cirsium longifolium Boiss.
- Species Cirsium longipes Nakai accepted as Cirsium sieboldii Miq.
- Species Cirsium longirameum Gand.
- Species Cirsium longispinum A.Kern. accepted as Cirsium creticum (Lam.) d'Urv.
- Species Cirsium longistylum R.J.Moore & Frankton
- Species Cirsium louisii J.Thiébaut accepted as Cirsium canum (L.) All.
- Species Cirsium lucens Kitam.
- Species Cirsium luchuense Nakai ex Koidz.
- Species Cirsium lucidum DC.
- Species Cirsium lutescens Raf.
- Species Cirsium luzoniense Merr.
- Species Cirsium lycaonicum Boiss. & Heldr. accepted as Cirsium libanoticum subsp. lycaonicum (Boiss. & Heldr.) P.H.Davis & Parris
- Species Cirsium lyratum Bunge accepted as Hemistepta lyrata (Bunge) Bunge
- Species Cirsium maackii Maxim. accepted as Cirsium japonicum var. maackii (Maxim.) Matsum.
- Species Cirsium macedonicum Formánek
- Species Cirsium macounii (Greene) Petr. accepted as Cirsium edule var. macounii (Greene) D.J.Keil
- Species Cirsium macounii (Greene) Rydb. accepted as Cirsium edule var. macounii (Greene) D.J.Keil
- Species Cirsium macracanthum Sch.Bip. accepted as Cirsium wallichii DC.
- Species Cirsium macrandhum (Schrenk) B.Fedtsch. accepted as Cousinia hablitzii C.A.Mey. ex DC.
- Species Cirsium macranthum (Schrenk) Panigrahi accepted as Cousinia hablitzii C.A.Mey. ex DC.
- Species Cirsium macrobotrys (K.Koch) Boiss.
- Species Cirsium macrocephalum C.A.Mey.
- Species Cirsium macrochaetum Tausch
- Species Cirsium macropterum accepted as Cirsium macrobotrys (K.Koch) Boiss.
- Species Cirsium macrostachyum (Trautv.) Boiss. accepted as Ptilostemon casabonae (L.) Greuter
- Species Cirsium macrostylon (Moretti) Rchb. accepted as Dasyphyllum tomentosum var. multiflorum (Baker) Cabrera
- Species Cirsium maculatum Moench accepted as Notobasis syriaca (L.) Cass.
- Species Cirsium maculatum Scop. accepted as Silybum marianum (L.) Gaertn.
- Species Cirsium maculatum Lam. accepted as Tyrimnus leucographus (L.) Cass.
- Species Cirsium magnificum (A.Nelson) Rydb. accepted as Cirsium scariosum var. scariosum Nutt.
- Species Cirsium magnificum (A.Nelson) Petr. accepted as Cirsium scariosum var. scariosum Nutt.
- Species Cirsium magofukui Kitam.
- Species Cirsium mailhoi Giraudias
- Species Cirsium mairei Halácsy
- Species Cirsium mairei (H.Lév.) H.Lév. accepted as Cirsium griseum H.Lév.
- Species Cirsium makinoi Kadota
- Species Cirsium mamiyanum Koidz. accepted as Cirsium pectinellum A.Gray
- Species Cirsium manshuricum Kitag. accepted as Cirsium lineare (Thunb.) Sch.Bip.
- Species Cirsium mareoticum Spreng. accepted as Carthamus mareoticus Delile
- Species Cirsium maritimum Makino
- Species Cirsium maritimum Davidson & Moxley
- Species Cirsium maritimum (Elmer) Petr.
- Species Cirsium maroccanum Petr.
- Species Cirsium martini L.C.Lamb.
- Species Cirsium martinii L.C.Lamb.
- Species Cirsium maruyamanum Kitam.
- Species Cirsium masami-saitoanum Kadota
- Species Cirsium masferreri Cadevall
- Species Cirsium matritense Lag. ex Cut.
- Species Cirsium matritense Lag. ex Cutanda accepted as Cirsium pyrenaicum (Jacq.) All.
- Species Cirsium matsumurae Nakai
- Species Cirsium matsushimense Kitam. accepted as Cirsium nipponicum (Maxim.) Makino
- Species Cirsium maximowiczii Nakai accepted as Cirsium aomorense Nakai
- Species Cirsium maximum Benth. accepted as Cirsium subcoriaceum (Less.) Sch.Bip. ex Sch.Bip.
- Species Cirsium mazanderanicum Petr.
- Species Cirsium mazanderanicum Petr. ex Rech.f. accepted as Cirsium hygrophilum Boiss.
- Species Cirsium mcvaughii B.L.Turner
- Species Cirsium medium All.
- Species Cirsium megacanthum Nutt. accepted as Cirsium horridulum var. megacanthum (Nutt.) D.J.Keil
- Species Cirsium megacephalum Rouy
- Species Cirsium megacephalum (A.Gray) Cockerell ex Daniels accepted as Cirsium undulatum (Nutt.) Spreng.
- Species Cirsium megacephalum (A.Gray) Cockerell accepted as Cirsium undulatum var. undulatum (Nutt.) Spreng.
- Species Cirsium megricum Kharadze accepted as Cirsium schelkownikowii Petr.
- Species Cirsium melanolepis Petr. accepted as Cirsium henryi (Franch.) Diels
- Species Cirsium mendocinum Petr.
- Species Cirsium mexicanum DC.
- Species Cirsium michaletii Rouy
- Species Cirsium micranthum Treuinf.
- Species Cirsium microcephalum Moris accepted as Lamyropsis microcephala (Moris) Dittrich & Greuter
- Species Cirsium microcephalum Sch.Bip. accepted as Galactites tomentosa Moench
- Species Cirsium microcephalum Lange accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium microspicatum Nakai
- Species Cirsium mielichhoferi Saut. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium miliarakisii Maire & Petitm.
- Species Cirsium milliati Arènes
- Species Cirsium minganense Vict. accepted as Cirsium scariosum var. scariosum Nutt.
- Species Cirsium minii Pamp.
- Species Cirsium mirabile Kitam.
- Species Cirsium mirum Iljin accepted as Modestia mira (Iljin) Kharadze & Tamamsch.
- Species Cirsium misawaense Nakai ex Kitam.
- Species Cirsium misilmerense Ces., Pass. & Gibelli accepted as Cirsium vulgare subsp. crinitum (Boiss. ex DC.) Arènes
- Species Cirsium mite Fisch. accepted as Cnicus mitis Hornem.
- Species Cirsium mitissimum Pamp.
- Species Cirsium modestum (Nakai) Miyabe & Kudô ex Miyabe & Kudô accepted as Cirsium pectinellum A.Gray
- Species Cirsium modestum (Osterh.) Petr. accepted as Cirsium clavatum var. americanum (A.Gray) D.J.Keil
- Species Cirsium modestum (Osterh.) Rydb. accepted as Cirsium clavatum var. americanum (A.Gray) D.J.Keil
- Species Cirsium modestum (Osterh.) Cockerell accepted as Cirsium clavatum var. americanum (A.Gray) D.J.Keil
- Species Cirsium mohavense (Greene) Petr.
- Species Cirsium mohavense (Greene) Davidson & Moxley accepted as Cirsium mohavense (Greene) Petr.
- Species Cirsium mokchangense Nakai
- Species Cirsium moldavicum Dobrescu & Nyár.
- Species Cirsium mongolicum Petr.
- Species Cirsium monocephalum (Vaniot) H.Lév.
- Species Cirsium monspessulanum (L.) Hill
- Species Cirsium monspessulanum Hill.
- Species Cirsium montanum Waldst. & Kit. ex Willd.
- Species Cirsium montanum Hill
- Species Cirsium montanum (Waldst. & Kit. ex Willd.) Spreng. accepted as Cirsium alsophilum (Pollini) Soldano
- Species Cirsium montanum Bubani accepted as Cirsium monspessulanum (L.) Hill
- Species Cirsium montigenum Petr. accepted as Cirsium hydrophilum var. vaseyi (A.Gray) J.T.Howell
- Species Cirsium moravicum Petr.
- Species Cirsium morettianum Nyman accepted as Cirsium spathulatum (Moretti) Gaudin
- Species Cirsium morii Hayata
- Species Cirsium morinifolium Boiss. & Heldr.
- Species Cirsium morinifolium Boiss. & Heldr. ex Boiss.
- Species Cirsium morisianum Rchb.f.
- Species Cirsium morrisii C.Bicknell
- Species Cirsium morrisii Bicknell
- Species Cirsium muliense C.Shih
- Species Cirsium munitum Fisch. accepted as Cirsium kosmelii (Adams) Fisch. ex Hohen.
- Species Cirsium muraii Kitam. accepted as Cirsium amplexifolium var. muraii (Kitam.) Kitam.
- Species Cirsium murdockii S.L.Welsh
- Species Cirsium murdockii (S.L.Welsh) Cronquist accepted as Cirsium eatonii var. murdockii S.L.Welsh
- Species Cirsium murrianum Khek
- Species Cirsium murrrii Dalla Torre & Sarnth.
- Species Cirsium mutatum Menyh. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium muticum Michx.
- Species Cirsium myokoense Kadota
- Species Cirsium myrianthum Gand.
- Species Cirsium naegelianum M.Loehr
- Species Cirsium nagatoense Kadota
- Species Cirsium nagisoense Kadota
- Species Cirsium naikurense
- Species Cirsium nakae Kudô
- Species Cirsium nakaianum (H.Lév. & Vaniot) Nakai accepted as Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium nambuense Nakai
- Species Cirsium nambuense Nakai.
- Species Cirsium narbonense Rouy
- Species Cirsium navajoense R.J.Moore & Frankton accepted as Cirsium arizonicum var. chellyense (R.J.Moore & Frankton) D.J.Keil
- Species Cirsium nebraskense (Britton) Lunell accepted as Cirsium canescens Nutt.
- Species Cirsium neglectum Fisch. ex Spreng. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium nelsonii (Pammel) Petr. accepted as Cirsium canescens Nutt.
- Species Cirsium nelsonii (Pammel) Rydb. accepted as Cirsium canescens Nutt.
- Species Cirsium nemorale Rchb. accepted as Cirsium vulgare subsp. silvaticum (Tausch) Arènes
- Species Cirsium neomexicanum A.Gray
- Species Cirsium nepalense DC. accepted as Cirsium wallichii DC.
- Species Cirsium nepalensis DC. accepted as Cirsium wallichii var. wallichii
- Species Cirsium nerimaniae Yıldız, Dirmenci & Arabacı
- Species Cirsium neumanni Khek
- Species Cirsium neumannii Khek
- Species Cirsium nevadense Willk.
- Species Cirsium nevadense (Greene) Petr. accepted as Cirsium neomexicanum A.Gray
- Species Cirsium nevoleanum Hayek
- Species Cirsium neyrae Camus
- Species Cirsium neyrae E.G.Camus
- Species Cirsium nidulans Regel accepted as Schmalhausenia nidulans (Regel) Petr.
- Species Cirsium nidulum (M.E.Jones) Rydb. accepted as Cirsium arizonicum var. arizonicum (A.Gray) Petr.
- Species Cirsium nidulum (M.E.Jones) Petr. accepted as Cirsium arizonicum var. arizonicum (A.Gray) Petr.
- Species Cirsium nigriceps Standl. & Steyerm.
- Species Cirsium nikkoense Nakai ex Matsum. & Koidz. accepted as Cirsium oligophyllum var. nikkoense Kitam.
- Species Cirsium nippoense Kadota
- Species Cirsium nipponense (Nakai) Koidz. accepted as Cirsium borealinipponense Kitam. & Murata ex Kitam.
- Species Cirsium nipponicum (Maxim.) Makino
- Species Cirsium nipponicus Maxim.
- Species Cirsium nishiokae Kitam.
- Species Cirsium nivale (Kunth) Sch.Bip.
- Species Cirsium niveum (C.Presl) Spreng. accepted as Ptilostemon niveus (C.Presl) Greuter
- Species Cirsium noli-tangere Borbás
- Species Cirsium noli-tangere Sommier & Levier accepted as Cirsium adjaricum Sommier & Levier
- Species Cirsium norikurense Nakai
- Species Cirsium nothum Goller
- Species Cirsium novoleonense G.L.Nesom
- Species Cirsium novo-mexicanum Petr.
- Species Cirsium numidicum Spreng.
- Species Cirsium nuttalii DC.
- Species Cirsium nuttallii DC.
- Species Cirsium oaxacanum G.L.Nesom
- Species Cirsium oblanceolatum (Rydb.) K.Schum. accepted as Cirsium flodmanii (Rydb.) Arthur
- Species Cirsium oblongifolium K.Koch
- Species Cirsium obscurum Kern. ex Treuinf.
- Species Cirsium obvallatum (M.Bieb.) Fisch.
- Species Cirsium obvallatum (M.Bieb.) M.Bieb.
- Species Cirsium occidentale (Nutt.) Jeps.
- Species Cirsium occidentalinipponense Kadota
- Species Cirsium ochrocentrum A.Gray
- Species Cirsium ochrolepidium Juz. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium ochroleucum All. accepted as Cirsium hypoleucum DC.
- Species Cirsium odontolepis Boiss. ex DC.
- Species Cirsium odoratum Britton
- Species Cirsium odoratum (Muhl. ex Bartram) Petr. accepted as Cirsium pumilum (Nutt.) Spreng.
- Species Cirsium odoratum (Muhl. ex Barton) Petr. accepted as Cirsium pumilum var. pumilum
- Species Cirsium oenanum Treuinf.
- Species Cirsium oenipontanum Treuinf.
- Species Cirsium ogatae Koidz. accepted as Cirsium suffultum (Maxim.) Matsum.
- Species Cirsium ohminense Kadota
- Species Cirsium okamotoi Kitam.
- Species Cirsium oleraceum (L.) Scop.
- Species Cirsium oligophyllum (Franch. & Sav.) Matsum.
- Species Cirsium olivescens (Rydb.) Petr. accepted as Cirsium scariosum var. coloradense (Rydb.) D.J.Keil
- Species Cirsium olivescens (Rydb.) Rydb. accepted as Cirsium scariosum var. coloradense (Rydb.) D.J.Keil
- Species Cirsium oltense Fomin
- Species Cirsium onopordioides Kotschy ex Boiss. accepted as Onopordum polycephalum Boiss.
- Species Cirsium opacum (Kitam.) Kadota
- Species Cirsium oreganum Piper accepted as Cirsium remotifolium var. rivulare Jeps.
- Species Cirsium oreithales Hance
- Species Cirsium oreithales Hance ex Walp. accepted as Cirsium lineare (Thunb.) Sch.Bip.
- Species Cirsium oreophilum (Rydb.) K.Schum.
- Species Cirsium oreophilum (Rydb.) Rydb. accepted as Cirsium oreophilum (Rydb.) K.Schum.
- Species Cirsium orgyale Hort. ex Tausch accepted as Cirsium aciculare Tausch
- Species Cirsium orgyale Link accepted as Cnicus orgyalis Willd.
- Species Cirsium orientale Spreng. accepted as Galactites tomentosa Moench
- Species Cirsium orizabaense Sch.Bip.
- Species Cirsium orizabense Sch.Bip. ex Klatt
- Species Cirsium orizabensis Sch.Bip.
- Species Cirsium orophilum Arv.-Touv.
- Species Cirsium osseticum (Adams) Petr.
- Species Cirsium osterhoutii (Rydb.) Petr. accepted as Cirsium clavatum var. osterhoutii (Rydb.) D.J.Keil
- Species Cirsium otayae Kitam.
- Species Cirsium otayai Kitam.
- Species Cirsium ovalifolium (Franch. & Sav.) Matsum. accepted as Cirsium nipponicum var. incomptum (Maxim.) Kitam. ex Ohwi
- Species Cirsium oviforme Gand. accepted as Cirsium eriophorum (L.) Scop.
- Species Cirsium ownbeyi S.L.Welsh
- Species Cirsium oxylepis Petr.
- Species Cirsium palatinum Sch.Bip. ex Nyman accepted as Cirsium palustre (L.) Coss. ex Scop.
- Species Cirsium pallens DC. accepted as Cirsium oleraceum (L.) Scop.
- Species Cirsium pallidum (Wooton & Standl.) Wooton & Standl. accepted as Cirsium parryi (A.Gray) Petr.
- Species Cirsium palousense (Piper) Piper accepted as Cirsium brevifolium Nutt.
- Species Cirsium paludosum G.Don accepted as Cnicus paludosus Loisel.
- Species Cirsium palustre (L.) Coss. ex Scop.
- Species Cirsium palustriforme (Čelak.) Dalla Torre & Sarnth. accepted as Cirsium subalpinum
- Species Cirsium paniculatum Boiss. & Hausskn. ex Boiss. accepted as Cirsium leucocephalum (Willd.) Spreng.
- Species Cirsium paniculatum Vahl ex Willk. & Lange accepted as Cirsium flavispinum Boiss.
- Species Cirsium paniculatum Spreng. accepted as Cirsium pyrenaicum (Jacq.) All.
- Species Cirsium paniculatum Lam. accepted as Carduus carlinoides Gouan
- Species Cirsium paniculatum Porta accepted as Cirsium monspessulanum subsp. ferox (Coss.) Talavera
- Species Cirsium pannoniciforme Nyár.
- Species Cirsium pannonicum (L.f.) Link
- Species Cirsium paradoxum Hayek
- Species Cirsium paradoxum Wallr.
- Species Cirsium parietinum Gand.
- Species Cirsium parryi (A.Gray) Petr.
- Species Cirsium parryi (A.Gray) Cockerell ex Daniels accepted as Cirsium parryi (A.Gray) Petr.
- Species Cirsium parviflorum DC. accepted as Cirsium oleraceum (L.) Scop.
- Species Cirsium parviflorum Lange ex Nyman accepted as Cirsium palustre (L.) Coss. ex Scop.
- Species Cirsium parviflorum Schleich. ex Steud. accepted as Cirsium oleraceum (L.) Scop.
- Species Cirsium pascuarense (Kunth) Spreng.
- Species Cirsium pastoris J.T.Howell accepted as Cirsium occidentale var. candidissimum (Greene) J.F.Macbr.
- Species Cirsium patens Kitam.
- Species Cirsium pauciflorum Lam. accepted as Carduus defloratus L.
- Species Cirsium pauciflorum (Waldst. & Kit. ex Willd.) Spreng. accepted as Cirsium waldsteinii Rouy
- Species Cirsium pauciflorum W.D.J.Koch accepted as Cirsium heterophyllum (L.) Hill
- Species Cirsium peckii L.F.Hend. accepted as Cirsium eatonii var. peckii (L.F.Hend.) D.J.Keil
- Species Cirsium pectinellum A.Gray
- Species Cirsium pelii Formánek accepted as Cirsium ligulare subsp. albanum Wettst.
- Species Cirsium peltieri Maire
- Species Cirsium pendulum Fisch. ex DC.
- Species Cirsium penicillatum K.Koch accepted as Cirsium leucocephalum subsp. penicillatum (K.Koch) Greuter
- Species Cirsium peraffine Gand.
- Species Cirsium perennans (Greene) Wooton & Standl. accepted as Cirsium wheeleri (A.Gray) Petr.
- Species Cirsium periacanthaceum C.Shih
- Species Cirsium perniveum H.Lindb.
- Species Cirsium perplexans (Rydb.) Petr.
- Species Cirsium perplexans (Rydb.) Rydb. accepted as Cirsium perplexans (Rydb.) Petr.
- Species Cirsium perplexissimum Kitam.
- Species Cirsium perpungens Schur ex Nyár.
- Species Cirsium persicum Boiss. accepted as Cirsium bracteosum var. brevicuspis Boiss.
- Species Cirsium persimile Beck
- Species Cirsium personatum
- Species Cirsium peshmenianum Yıldız, Arabacı & Dirmenci
- Species Cirsium petrakianum Domin
- Species Cirsium petrakii kozl. & Woronow ex Grossh.
- Species Cirsium pexum (Maxim.) Nakai accepted as Cirsium suffultum (Maxim.) Matsum.
- Species Cirsium phulchokiense Kitam.
- Species Cirsium phyllocephalum Boiss. & Blanche
- Species Cirsium phyllocephalum Boiss. & C.I.Blanche
- Species Cirsium pichleri Huter accepted as Cirsium bulgaricum DC.
- Species Cirsium pilosum Kitam.
- Species Cirsium pindicolum Hausskn.
- Species Cirsium pinetorum Greenm.
- Species Cirsium pinetorum (Small) Small accepted as Cirsium horridulum Michx.
- Species Cirsium pinnatibracteatum Ling accepted as Cirsium leo Nakai & Kitag.
- Species Cirsium pinnatifidum Spreng. accepted as Klasea pinnatifida (Cav.) Talavera
- Species Cirsium pinnatisectum (Klatt) Petr.
- Species Cirsium pisidium Wettst. accepted as Picnomon acarna (L.) Cass.
- Species Cirsium pitcheri (Torr. ex Eaton) Torr. & A.Gray
- Species Cirsium plattense (Rydb.) Fernald accepted as Cirsium canescens Nutt.
- Species Cirsium plattense (Rydb.) Cockerell accepted as Cirsium canescens Nutt.
- Species Cirsium plattense (Rydb.) Fernald ex B.L.Rob. accepted as Cirsium canescens Nutt.
- Species Cirsium plattense (Rydb.) Cockerell ex Daniels accepted as Cirsium canescens Nutt.
- Species Cirsium platycephalum Benth. ex Oerst. accepted as Cirsium subcoriaceum (Less.) Sch.Bip. ex Sch.Bip.
- Species Cirsium platycephalum Benth. accepted as Cirsium subcoriaceum (Less.) Sch.Bip. ex Sch.Bip.
- Species Cirsium platyonychium Sennen
- Species Cirsium poeltii Petr.
- Species Cirsium polivkae Podp.
- Species Cirsium polonicum (Petr.) Iljin accepted as Cirsium decussatum Janka
- Species Cirsium poluninii P.H.Davis & Parris
- Species Cirsium polyacanthum Hochst. ex Kar. & Kir. accepted as Cirsium straminispinum C.Jeffrey ex Cufod.
- Species Cirsium polyanthemon Spreng.
- Species Cirsium polyanthemum (L.) Spreng.
- Species Cirsium polyanthos d'Urv. accepted as Cirsium creticum (Lam.) d'Urv.
- Species Cirsium polycephalum DC.
- Species Cirsium polycephalum Willd. ex Spreng.
- Species Cirsium polymorphum Porta
- Species Cirsium polymorphum doll. ex Hausm. accepted as Cirsium linkianum M.Loehr
- Species Cirsium polyphyllum (Rydb.) Rydb. accepted as Cirsium eatonii var. murdockii S.L.Welsh
- Species Cirsium polyphyllum (Rydb.) Petr. accepted as Cirsium eatonii var. murdockii S.L.Welsh
- Species Cirsium ponticum C.A.Mey. accepted as Cirsium polycephalum DC.
- Species Cirsium portae Hausm. accepted as Cirsium linkianum M.Loehr
- Species Cirsium portoricense (Kuntze) Petr.
- Species Cirsium potosinum
- Species Cirsium praealtum Cass. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium praemorsum W.D.J.Koch accepted as Cirsium oleraceum (L.) Scop.
- Species Cirsium praeteriens J.F.Macbr.
- Species Cirsium prasinolepis (Petr.) Grossh. accepted as Cirsium macrocephalum C.A.Mey.
- Species Cirsium pratense DC. accepted as Cirsium monspessulanum (L.) Hill
- Species Cirsium pratense (Huds.) Druce accepted as Cirsium dissectum (L.) Hill
- Species Cirsium pratensis
- Species Cirsium praticola Petr.
- Species Cirsium prativagum Petr.
- Species Cirsium pringlei (S.Watson) Petr.
- Species Cirsium proponticum Griseb. accepted as Cirsium eriophorum (L.) Scop.
- Species Cirsium proteanum J.T.Howell accepted as Cirsium occidentale var. venustum (Greene) Jeps.
- Species Cirsium provosti (Franch.) Petr. accepted as Cirsium pendulum Fisch. ex DC.
- Species Cirsium provostii Franch.
- Species Cirsium przybylskii Eichenfeld
- Species Cirsium przybylskii Eichenf.
- Species Cirsium pseudobracteosum P.H.Davis & Parris
- Species Cirsium pseudocanum Schur accepted as Cirsium pannonicum (L.f.) Link
- Species Cirsium pseudoerisithaloides Pamp.
- Species Cirsium pseudogaillardoti Arènes accepted as Cirsium creticum subsp. gaillardotii (Boiss.) P.H.Davis & Parris
- Species Cirsium pseudohispanicum Arènes accepted as Ptilostemon rhiphaeus (Pau & Font Quer) Greuter
- Species Cirsium pseudolanceolatum Schur accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium pseudolappaceum Kharadze
- Species Cirsium pseudo-oleraceum Schur accepted as Cirsium pannonicum (L.f.) Link
- Species Cirsium pseudopalustre Schur accepted as Cirsium palustre (L.) Coss. ex Scop.
- Species Cirsium pseudopannonicum Schur accepted as Cirsium canum (L.) All.
- Species Cirsium pseudopendulum Nakai accepted as Cirsium nipponicum (Maxim.) Makino
- Species Cirsium pseudopersonata Boiss. & Balansa ex Boiss.
- Species Cirsium pseudosuffultum Kadota
- Species Cirsium pskemense Lazkov
- Species Cirsium pubigerum (Desf.) DC.
- Species Cirsium pugnax Sommier & Levier
- Species Cirsium pulchellum (Greene ex Rydb.) Wooton & Standl. accepted as Cirsium calcareum (M.E.Jones) Wooton & Standl.
- Species Cirsium pulcherrimum (Rydb.) K.Schum.
- Species Cirsium pulchrum E.G.Camus
- Species Cirsium pulchrum Camus
- Species Cirsium pumilio Tausch
- Species Cirsium pumilum (Nutt.) Spreng.
- Species Cirsium pungens Schur
- Species Cirsium pungens Spreng. accepted as Cirsium polyanthemum (L.) Spreng.
- Species Cirsium puniceum Soják accepted as Cirsium adjaricum Sommier & Levier
- Species Cirsium purpuratum (Maxim.) Matsum.
- Species Cirsium purpureum All. accepted as Cirsium spinosissimum (L.) Scop.
- Species Cirsium pustariacum Ausserd. ex Treuinf.
- Species Cirsium pygmaeum Scop. accepted as Saussurea pygmaea Spreng.
- Species Cirsium pyramidale Bornm.
- Species Cirsium pyrenaicum (Jacq.) All.
- Species Cirsium quercetorum (A.Gray) Jeps.
- Species Cirsium racemiforme Ling & C.Shih
- Species Cirsium racemosum Boiss. accepted as Cirsium leucocephalum subsp. tenuilobum (K.Koch) Greuter
- Species Cirsium radians Benth.
- Species Cirsium rassulovae B.A.Scharip.
- Species Cirsium rassulovii B.A.Sharipova
- Species Cirsium rechingeri Negaresh
- Species Cirsium reglense Sch.Bip. ex Klatt
- Species Cirsium reglense Sch.Bip.
- Species Cirsium reichardtii Jurotzka
- Species Cirsium reichenbachianum M.Loehr
- Species Cirsium reinii (Franch. & Sav.) Matsum. accepted as Cirsium sieboldii Miq.
- Species Cirsium remotifolium (Hook.) DC.
- Species Cirsium remotifolium Jeps.
- Species Cirsium repandum Michx.
- Species Cirsium replicatum DC. accepted as Cnicus replicatus Hornem.
- Species Cirsium revolutum (Small) Petr. accepted as Cirsium virginianum (L.) Michx.
- Species Cirsium reyi Rouy
- Species Cirsium rhabdotolepis Petr. accepted as Cirsium alatum (S.G.Gmel.) Bobrov
- Species Cirsium rhaphilepis (Hemsl.) Petr.
- Species Cirsium rheginum Spreng. accepted as Galactites tomentosa Moench
- Species Cirsium rhinoceros (H.Lév. & Vaniot) Nakai
- Species Cirsium rhiphaeum Font Quer accepted as Ptilostemon rhiphaeus (Pau & Font Quer) Greuter
- Species Cirsium rhizocephalum C.A.Mey.
- Species Cirsium rhodanicum Gand.
- Species Cirsium rhodo-leucanthum Walp. accepted as Cirsium esculentum (Siev.) C.A.Mey.
- Species Cirsium rhothophilum S.F.Blake
- Species Cirsium rhysocephalum
- Species Cirsium richeleanum Tourlet
- Species Cirsium richterianum Gillot
- Species Cirsium rigens (Aiton) Wallr.
- Species Cirsium rigens Spreng. accepted as Cirsium oleraceum (L.) Scop.
- Species Cirsium rigidum DC.
- Species Cirsium rigidum Porta
- Species Cirsium riparium (Koidz.) Koidz. accepted as Cirsium yezoense (Maxim.) Makino
- Species Cirsium rivulare (Jacq.) All.
- Species Cirsium rivulare Link
- Species Cirsium rodiei H.J.Coste & Soulié
- Species Cirsium rodnense Nyár.
- Species Cirsium rohlenae Petr.
- Species Cirsium rollowii Petr. & Woronow
- Species Cirsium rosani Ten. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium rosenii Vill. accepted as Cirsium acaulon (L.) Scop.
- Species Cirsium roseolum Gorl.
- Species Cirsium roseum Petr.
- Species Cirsium rosulatum Talavera & Valdés
- Species Cirsium rothrockii (A.Gray) Petr. accepted as Cirsium arizonicum var. rothrockii (A.Gray) D.J.Keil
- Species Cirsium rouyana Sennen
- Species Cirsium royleanum Sch.Bip.
- Species Cirsium rubricaule Novopokr.
- Species Cirsium rubriflorum Fleischerin Dorfler
- Species Cirsium rubriflorum J.Fleisch.
- Species Cirsium ruderale Nakai accepted as Cirsium heiianum Koidz.
- Species Cirsium rufescens Ramond ex DC. accepted as Cirsium carniolicum subsp. rufescens (Ramond ex DC.) P.Fourn.
- Species Cirsium rusbyi (Greene) Petr. accepted as Cirsium mohavense (Greene) Petr.
- Species Cirsium rusticanum Gand.
- Species Cirsium ruthenicum Fisch. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium rydbergii Petr.
- Species Cirsium sabaudum M.Loehr
- Species Cirsium sabaudum Ruhmer
- Species Cirsium sahendi Bornm. accepted as Cirsium haussknechtii Boiss.
- Species Cirsium sairamense (C.Winkl.) O.Fedtsch. & B.Fedtsch.
- Species Cirsium salamanticum Hill accepted as Mantisalca salmantica (L.) Briq. & Cavill.
- Species Cirsium salicifolium (Kitag.) C.Shih accepted as Cirsium viridifolium (Hand.-Mazz.) C.Shih
- Species Cirsium salinum M.Bieb. ex Steud. accepted as Centaurea salicina
- Species Cirsium salisburgense (Willd.) G.Don accepted as Cirsium rivulare (Jacq.) All.
- Species Cirsium salvadori Sennen accepted as Cirsium medium All.
- Species Cirsium salvadoris Sennen & Pau
- Species Cirsium samniticum Steud. accepted as Cirsium italicum (Savi) DC.
- Species Cirsium san-sebastiani Evers ex Petr. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium sansebastianii Evers ex Petr.
- Species Cirsium scabrum (Poir.) Bonnet & Barratte
- Species Cirsium scapanolepis Petr. accepted as Cirsium scariosum var. americanum (A.Gray) D.J.Keil
- Species Cirsium scariosum (Poir.) Nutt.
- Species Cirsium schakaptaricum O.Fedtsch. & B.Fedtsch. accepted as Lamyropappus schakaptaricus (B.Fedtsch.) Knorring & Tamamsch.
- Species Cirsium schantarense Trautv. & C.A.Mey.
- Species Cirsium schefferi Boros
- Species Cirsium schelkovnikovii Petr.
- Species Cirsium schelkownikowii Petr.
- Species Cirsium schimperi (Vatke) C.Jeffrey ex Cufod. accepted as Afrocirsium schimperi (Vatke) Calleja, Garcia-Jacas, Moreyra & Susanna,
- Species Cirsium schimperi (Vatke) C.Jeffrey
- Species Cirsium schischkinii Serg. accepted as Cirsium komarovii subsp. schischkinii (Serg.) Zhirova
- Species Cirsium schmidtianum M.Schulze
- Species Cirsium schroeteri Braun-Blanq.
- Species Cirsium schroeteri Jos.Braun
- Species Cirsium scleranthum M.Bieb. accepted as Cirsium echinus (M.Bieb.) Hand.-Mazz.
- Species Cirsium scolopendron Porta
- Species Cirsium scopolianum Sch.Bip. ex Nyman accepted as Cirsium erisithales (Jacq.) Scop.
- Species Cirsium scopolii Khek
- Species Cirsium scopulorum (Greene) Cockerell ex Daniels accepted as Cirsium eatonii var. eriocephalum (A.Gray) D.J.Keil
- Species Cirsium scopulorum (Greene) Cockerell accepted as Cirsium eatonii var. eriocephalum (A.Gray) D.J.Keil
- Species Cirsium seegeriorum Murr
- Species Cirsium segetum Bunge accepted as Breea segeta (Bunge) Kitam.
- Species Cirsium semenovii
- Species Cirsium semenowi Regel
- Species Cirsium semidecurrens DC.
- Species Cirsium semidecurrens Richt. accepted as Cirsium palustre (L.) Coss. ex Scop.
- Species Cirsium semipectinatum Spreng.
- Species Cirsium semipectinatum Ledeb. ex Steud.
- Species Cirsium semipectinatum Rchb. accepted as Cirsium rivulare (Jacq.) All.
- Species Cirsium semzinanicum Fırat
- Species Cirsium sendaicum Nakai accepted as Cirsium nipponicum (Maxim.) Makino
- Species Cirsium senile Nakai accepted as Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium senjoense Kitam.
- Species Cirsium sennenii Rouy
- Species Cirsium sennholzi Eichenfeld
- Species Cirsium sennholzii Eichenf.
- Species Cirsium serratuloides (L.) Hill
- Species Cirsium serratuloides Scop. accepted as Cirsium pannonicum (L.f.) Link
- Species Cirsium serratum Tausch
- Species Cirsium serrulatum (M.Bieb.) Fisch.
- Species Cirsium serrulatum Schur
- Species Cirsium serrulatum M.Bieb.
- Species Cirsium sessiliflorum Herbich
- Species Cirsium setidens (Dunn) Nakai
- Species Cirsium setigerum Ledeb. accepted as Cirsium alatum (S.G.Gmel.) Bobrov
- Species Cirsium setigerum-pannonicum Nyár.
- Species Cirsium setosum (Willd.) Besser ex M.Bieb. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium setschwanicum (Petr.) Petr.
- Species Cirsium sextenum auszerd ex Huter
- Species Cirsium shansiense Petr.
- Species Cirsium shidokimontanum Kadota
- Species Cirsium shimae Kadota
- Species Cirsium shinanense Shimizu
- Species Cirsium sicigerum Hausskn. & Bornm.
- Species Cirsium siculum Spreng. accepted as Galactites tomentosa Moench
- Species Cirsium sidi-guinii Pau & Font Quer accepted as Cirsium dyris Jahand. & Maire
- Species Cirsium sieboldii Miq.
- Species Cirsium siegerti Sch.Bip. ex Nyman accepted as Cirsium rivulare (Jacq.) All.
- Species Cirsium siegertii Sch.Bip. ex Nyman
- Species Cirsium sieheanum Petr.
- Species Cirsium sieversii (Fisch. & C.A.Mey.) Petr.
- Species Cirsium sieversii B.Fedtsch.
- Species Cirsium sieversii (Fisch. & C.A.Mey.) Sch.Bip. accepted as Cirsium sieversii (Fisch. & C.A.Mey.) Petr.
- Species Cirsium silesiacum Sch.Bip. ex Nyman
- Species Cirsium silvaticum Tausch accepted as Cirsium vulgare subsp. silvaticum (Tausch) Arènes
- Species Cirsium simillimum Petr.
- Species Cirsium simonii Komlodi
- Species Cirsium simplex C.A.Mey.
- Species Cirsium simplex Hornem.
- Species Cirsium sinense C.B.Clarke accepted as Cirsium lineare (Thunb.) Sch.Bip.
- Species Cirsium sintenisii Freyn
- Species Cirsium sinuatum (Trautv.) Boiss. & Kotschy ex Boiss. accepted as Lamyropsis sinuata (Trautv.) Dittrich
- Species Cirsium sipyleum O.Schwarz
- Species Cirsium sivasicum Yıldız, Arabacı & Dirmenci
- Species Cirsium skutchii S.F.Blake
- Species Cirsium smallii Britton accepted as Cirsium horridulum var. vittatum (Small) R.W.Long
- Species Cirsium smirnovii Gubanov
- Species Cirsium smithianum Petr. accepted as Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium solanum Porta
- Species Cirsium sommieri Petr.
- Species Cirsium sordidum Wallr. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium sorocephalum Fisch. & C.A.Mey.
- Species Cirsium sorocephalum DC. accepted as Cirsium congestum var. sorocephalum (Fisch. & C.A.Mey.) Petr.
- Species Cirsium sosnowskyi Kharadze
- Species Cirsium soubiellei Sennen & Septimin
- Species Cirsium souliei (Franch.) Mattf. ex Rehder & Kobuski
- Species Cirsium souliei (Franch.) Mattf.
- Species Cirsium spathulatum (Moretti) Gaudin
- Species Cirsium spathulifolium Rydb. accepted as Cirsium scariosum var. americanum (A.Gray) D.J.Keil
- Species Cirsium spectabile DC.
- Species Cirsium spicatum (Maxim.) Matsum.
- Species Cirsium spinifolium Beck
- Species Cirsium spinosissimoides Ausserd. ex Treuinf.
- Species Cirsium spinosissimum (L.) Scop.
- Species Cirsium spinosissimum (Walter) B.L.Rob. & Fernald
- Species Cirsium spinosum Kitam.
- Species Cirsium spinuliferum (Kitam.) Kadota
- Species Cirsium spitzelii Sch.Bip. ex Nyman accepted as Cirsium spinosissimum (L.) Scop.
- Species Cirsium spitzneri Formánek
- Species Cirsium spurium Delastre accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium spurium (DC.) Lacaita accepted as Cirsium tenoreanum Petr.
- Species Cirsium squarrosum Fisch. ex Spreng. accepted as Cnicus squarrosus Hornem.
- Species Cirsium stabianum Lacaita accepted as Cirsium ferox (L.) DC.
- Species Cirsium steirolepis Petr.
- Species Cirsium stellatum (L.) All. accepted as Ptilostemon stellatus (L.) Greuter
- Species Cirsium stenobracteatum Gilli accepted as Cirsium argyracanthum DC.
- Species Cirsium stenolepidum Nutt. accepted as Cirsium remotifolium (Hook.) DC.
- Species Cirsium stenophyllum Boiss. accepted as Cirsium leucocephalum subsp. tenuilobum (K.Koch) Greuter
- Species Cirsium stiriacum Fritsch
- Species Cirsium stocksii Boiss. accepted as Cirsium arvense (L.) Scop.
- Species Cirsium stoderianum Dürrnb.
- Species Cirsium stojanovii Kuzmanov
- Species Cirsium stonum Porta ex Kern.
- Species Cirsium straminispinum C.Jeffrey ex Cufod. accepted as Afrocirsium straminispinum (C.Jeffrey) Calleja, Garcia-Jacas, Moreyra & Susanna
- Species Cirsium straminispinum C.Jeffrey accepted as Afrocirsium straminispinum (C.Jeffrey) Calleja, Garcia-Jacas, Moreyra & Susanna
- Species Cirsium straussianum Hausskn. accepted as Cirsium haussknechtii Boiss.
- Species Cirsium streptacanthum Gand.
- Species Cirsium strictum (Ten.) Link accepted as Ptilostemon strictus (Ten.) Greuter
- Species Cirsium strictum Moris accepted as Galactites tomentosa Moench
- Species Cirsium strictum Spreng. accepted as Ptilostemon strictus (Ten.) Greuter
- Species Cirsium strigosissimum Petr. & Bornm.
- Species Cirsium strigosum (M.Bieb.) Fisch.
- Species Cirsium strigosum (Hoffmanns. & Link) Cout. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium strigosum (M.Bieb.) M.Bieb. accepted as Cirsium strigosum (M.Bieb.) Fisch.
- Species Cirsium stroblii Hayek
- Species Cirsium subalatum Gaudin accepted as Cirsium oleraceum (L.) Scop.
- Species Cirsium subalpinum
- Species Cirsium subcanescens Petr.
- Species Cirsium subcanum Beck
- Species Cirsium subcoriaceum (Less.) Sch.Bip. ex Sch.Bip.
- Species Cirsium subcoriaceum (Less.) Petr. accepted as Cirsium subcoriaceum (Less.) Sch.Bip. ex Sch.Bip.
- Species Cirsium suberisithales Beck
- Species Cirsium subfloccosum Gand.
- Species Cirsium subfoliosum Petr.
- Species Cirsium subgriseum Petr.
- Species Cirsium subinerme Fisch. & C.A.Mey. accepted as Cirsium alatum (S.G.Gmel.) Bobrov
- Species Cirsium sublaeve Gand.
- Species Cirsium sublaniflorum Soják accepted as Cirsium laniflorum (M.Bieb.) Fisch.
- Species Cirsium submedium Hy
- Species Cirsium subniveum Rydb.
- Species Cirsium suboreophilum Petr.
- Species Cirsium subrivulare Beck
- Species Cirsium subsagittatum Schur accepted as Cirsium pannonicum (L.f.) Link
- Species Cirsium subsimplex Petr.
- Species Cirsium subtymphaeum Rech.f.
- Species Cirsium subulariforme C.Shih
- Species Cirsium subuliforme C.Shih
- Species Cirsium subuliforme G.B.Ownbey
- Species Cirsium subundulatum Petr.
- Species Cirsium succinctum Ledeb.
- Species Cirsium suffultum (Maxim.) Matsum.
- Species Cirsium suffultum Matsum. & Koidz.
- Species Cirsium sugimotoi Kitam.
- Species Cirsium sundquistii Hayek
- Species Cirsium supertextum Tausch
- Species Cirsium suspiciosum Beck
- Species Cirsium suzukaense Kitam.
- Species Cirsium suzukii Kitam.
- Species Cirsium svaneticum Sommier & Levier
- Species Cirsium svidovicense Domin
- Species Cirsium swaticum Petr.
- Species Cirsium sychnosanthum Petr.
- Species Cirsium sylvaticum DC. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium syriacum (L.) Gaertn. accepted as Notobasis syriaca (L.) Cass.
- Species Cirsium syriacus
- Species Cirsium szovitsii (K.Koch) Boiss. accepted as Cirsium ciliatum subsp. szovitsii (K.Koch) Petr.
- Species Cirsium takahashii Kadota
- Species Cirsium taliense (Jeffrey) H.Lév. accepted as Cirsium henryi (Franch.) Diels
- Species Cirsium tanakae (Franch. & Sav.) Matsum. accepted as Cirsium nipponicum var. incomtum
- Species Cirsium tanegashimense Kitam. ex Kadota
- Species Cirsium tappeineri Treuinf.
- Species Cirsium taquetii (H.Lév. & Vaniot) Nakai
- Species Cirsium tartaricum (Jacq.) All.
- Species Cirsium tashiroi Kitam.
- Species Cirsium tatakaense Y.H.Tseng & Chih Y.Chang
- Species Cirsium tataricum DC.
- Species Cirsium tauricolum Boiss. & Balansa ex Boiss. accepted as Ptilostemon tauricola (Boiss. & Hausskn.) Greuter
- Species Cirsium tauricum Soják accepted as Cirsium laniflorum (M.Bieb.) Fisch.
- Species Cirsium tauscheri Simonk. ex Petr. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium tauschii DC.
- Species Cirsium tchefouense Debeaux accepted as Cirsium lineare (Thunb.) Sch.Bip.
- Species Cirsium tempskyanum Rigo ex Huter accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium tenerrimum Petr.
- Species Cirsium tenoreanum Petr.
- Species Cirsium tenue Kitam.
- Species Cirsium tenuifolium C.Shih
- Species Cirsium tenuifolium (Gaudin) Hagenb.
- Species Cirsium tenuilobum (K.Koch) Boiss. accepted as Cirsium leucocephalum subsp. tenuilobum (K.Koch) Greuter
- Species Cirsium tenuipedunculatum Kadota
- Species Cirsium tenuisquamatum Kitam.
- Species Cirsium terrae-nigrae Shinners accepted as Cirsium engelmannii Rydb.
- Species Cirsium teshioense Kadota
- Species Cirsium texanum Buckley
- Species Cirsium thomasii Nägeli accepted as Cirsium oleraceum (L.) Scop.
- Species Cirsium thuretii Burnat ex Rouy
- Species Cirsium tianmushanicum C.Shih
- Species Cirsium tibeticum Kitam.
- Species Cirsium tindalicum Kharadze accepted as Cirsium daghestanicum Kharadze
- Species Cirsium tioganum (Congdon) Petr. accepted as Cirsium scariosum var. americanum (A.Gray) D.J.Keil
- Species Cirsium tirolense Treuinf.
- Species Cirsium tobai Nakai accepted as Cirsium amplexifolium (Nakai) Kitam.
- Species Cirsium togaense Kadota
- Species Cirsium tolucanum (B.L.Rob. & Seaton) Petr.
- Species Cirsium tomentosum C.A.Mey. accepted as Cirsium isophyllum (Petr.) Grossh.
- Species Cirsium tomentosum Moench accepted as Jurinea cynaroides (DC.) Mutel
- Species Cirsium tonense Nakai accepted as Cirsium nipponicum var. incomptum (Maxim.) Kitam. ex Ohwi
- Species Cirsium toraiense Nakai ex Kitam.
- Species Cirsium toyoshimae Koidz.
- Species Cirsium trachylepis Boiss.
- Species Cirsium trachylomum S.F.Blake
- Species Cirsium tracyi (Rydb.) Petr.
- Species Cirsium tracyi (Rydb.) Rydb. accepted as Cirsium tracyi (Rydb.) Petr.
- Species Cirsium transsilvanicum Schur accepted as Cnicus transsylvanicus Schur
- Species Cirsium treuinfelsianum Ausserd.
- Species Cirsium triacanthum Petr. accepted as Cirsium cymosum var. cymosum
- Species Cirsium tribadum Porta ex Vacc.
- Species Cirsium tribadum Porta
- Species Cirsium tricephalodes (Lam.) DC. accepted as Cirsium rivulare (Jacq.) All.
- Species Cirsium tricephalum St.-Lag. accepted as Cirsium rivulare (Jacq.) All.
- Species Cirsium tricholoma Fisch. & C.A.Mey. accepted as Cirsium osseticum subsp. tricholoma (Fisch. & C.A.Mey.) Petr.
- Species Cirsium tricholoma DC. accepted as Cirsium osseticum subsp. tricholoma (Fisch. & C.A.Mey.) Petr.
- Species Cirsium triebenense Hayek
- Species Cirsium trifurcum Petr.
- Species Cirsium trigeneum Petr.
- Species Cirsium trigeneum Bornm.
- Species Cirsium trinum Goller ex Huter
- Species Cirsium triplex Hayek
- Species Cirsium trispinosum Moench accepted as Ptilostemon casabonae (L.) Greuter
- Species Cirsium triste A.Kern.
- Species Cirsium tristissimum Kitam. accepted as Cirsium nipponicum var. yoshinoi (Nakai) Kitam. ex Ohwi
- Species Cirsium triumfettii (Lacaita) Lacaita accepted as Cirsium creticum subsp. triumfetti (Lacaita) Werner
- Species Cirsium tryphilinum Treuinf.
- Species Cirsium tsoongianum Y.Ling accepted as Cirsium lineare (Thunb.) Sch.Bip.
- Species Cirsium tuberosum (L.) All.
- Species Cirsium turbinatum H.J.Coste accepted as Cirsium richterianum Gillot
- Species Cirsium turbinatum Gillot accepted as Cirsium engelmannii Rydb.
- Species Cirsium turkestanicum (Regel) Petr.
- Species Cirsium turneri Warnock
- Species Cirsium tuzsonianum Kárpáti
- Species Cirsium tweedyi (Rydb.) Rydb. accepted as Cirsium eatonii var. murdockii S.L.Welsh
- Species Cirsium tweedyi (Rydb.) Petr. accepted as Cirsium eatonii var. murdockii S.L.Welsh
- Species Cirsium tymphaeum Hausskn.
- Species Cirsium tymphaeum Hausskn. ex Nyman accepted as Cirsium tymphaeum Hausskn.
- Species Cirsium ucrainicum
- Species Cirsium uetsuense Kitam.
- Species Cirsium ugoense Nakai
- Species Cirsium ukranicum Besser ex DC.
- Species Cirsium uliginosum (M.Bieb.) Fisch.
- Species Cirsium uliginosum Delastre
- Species Cirsium uliginosum M.Bieb.
- Species Cirsium uliginosum Heldr. ex Boiss. accepted as Cirsium libanoticum DC.
- Species Cirsium umezawanum Kadota
- Species Cirsium undulatum (Nutt.) Spreng.
- Species Cirsium uninerve Nakai
- Species Cirsium uninervium (H.Lév. & Vaniot) Nakai
- Species Cirsium unzenense Kadota & Mas.Saito
- Species Cirsium urbanum Beck
- Species Cirsium utahense Petr. accepted as Cirsium neomexicanum A.Gray
- Species Cirsium uzenense Kadota
- Species Cirsium valdespinulosum Sennen
- Species Cirsium valentinum Porta
- Species Cirsium validum Formánek
- Species Cirsium validus Greene
- Species Cirsium vallis-demonii Lojac.
- Species Cirsium vancouverense R.J.Moore & Frankton
- Species Cirsium vandasii Petr. accepted as Cirsium eriophorum (L.) Scop.
- Species Cirsium variabile Porta
- Species Cirsium variabile Moench accepted as Cirsium oleraceum (L.) Scop.
- Species Cirsium variegatum Arv.-Touv.
- Species Cirsium vaseyi (A.Gray) Jeps. accepted as Cirsium hydrophilum var. vaseyi (A.Gray) J.T.Howell
- Species Cirsium velatum (S.Watson) Petr.
- Species Cirsium velenovskyi Vandas accepted as Cirsium eriophorum (L.) Scop.
- Species Cirsium velenowskyi Vand.
- Species Cirsium venustum Porta
- Species Cirsium venustum Porta ex Vacc.
- Species Cirsium vernale (Osterh.) Cockerell accepted as Cirsium perplexans (Rydb.) Petr.
- Species Cirsium vernonioides C.Shih
- Species Cirsium verutum (D.Don) Spreng.
- Species Cirsium viale Gand.
- Species Cirsium viciosoi Sennen
- Species Cirsium vimariense Bornm.
- Species Cirsium vinaceum (Wooton & Standl.) Wooton & Standl.
- Species Cirsium vinaceum (Wooton & Standl.) Petr. accepted as Cirsium vinaceum (Wooton & Standl.) Wooton & Standl.
- Species Cirsium vindobonense Halácsy
- Species Cirsium virens Timb. & Jeanb. ex Nyman accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium virgatum Tausch
- Species Cirsium virgenum Goller & Huter
- Species Cirsium virginense S.L.Welsh accepted as Cirsium mohavense (Greene) Petr.
- Species Cirsium virginianum (L.) Michx.
- Species Cirsium virginianum Hook. accepted as Cirsium lecontei Torr. & A.Gray
- Species Cirsium viride Velen. ex Nyman
- Species Cirsium viride Velen. accepted as Cirsium alatum (S.G.Gmel.) Bobrov
- Species Cirsium viridifolium (Hand.-Mazz.) C.Shih
- Species Cirsium viridipurpureum Rechinger
- Species Cirsium vittatum (Small) Small accepted as Cirsium horridulum var. vittatum (Small) R.W.Long
- Species Cirsium vittozi Milliat ex Arènes
- Species Cirsium vivantii L.Villar, Segarra, J.López, Pérez-Coll. & Catalán
- Species Cirsium vlassovianum Fisch. ex DC.
- Species Cirsium vodicense Morariu
- Species Cirsium vulgare (Savi) Ten.
- Species Cirsium vulgare (Savi) Airy Shaw accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium vulgare (Savi) Petr. accepted as Cirsium vulgare (Savi) Ten.
- Species Cirsium wachtangia Woronow accepted as Ptilostemon echinocephalus (Willd.) Greuter
- Species Cirsium waisbeckeri Simonk.
- Species Cirsium wakasugianum Kadota
- Species Cirsium waldsteinii Rouy
- Species Cirsium walkerianum Petr. accepted as Cirsium quercetorum (A.Gray) Jeps.
- Species Cirsium wallichii DC.
- Species Cirsium wallowense M.Peck
- Species Cirsium wankelii Reichardt
- Species Cirsium welwitschii Coss.
- Species Cirsium wettsteinii Petr.
- Species Cirsium weyrichii Maxim. accepted as Cirsium kamtschaticum Ledeb. ex DC.
- Species Cirsium wheeleri (A.Gray) Petr.
- Species Cirsium wiedemannii Fisch., C.A.Mey. & Avé-Lall. accepted as Cirsium hypoleucum DC.
- Species Cirsium wilhelmii Petr.
- Species Cirsium willdenowii Steud. accepted as Cnicus willdenowii F.Dietr.
- Species Cirsium willkommianum Porta ex Willk. accepted as Cirsium echinatum (Desf.) DC.
- Species Cirsium wimmeri Čelak.
- Species Cirsium winkleri Font Quer
- Species Cirsium winklerianum Čelak.
- Species Cirsium wirtgenii M.Loehr
- Species Cirsium woodwardii H.C.Watson ex Nyman
- Species Cirsium woronowii Petr.
- Species Cirsium wrightii A.Gray
- Species Cirsium wwedenskyi (Petr.) Soják accepted as Cirsium caucasicum var. wwedenskyi Petr.
- Species Cirsium xanthacanthum Nakai accepted as Cirsium japonicum (Thunb.) Fisch. ex DC.
- Species Cirsium xenogena Petr.
- Species Cirsium yakumontanum Masam. accepted as Cirsium yakusimense Masam.
- Species Cirsium yakusimense Masam.
- Species Cirsium yamauchii Kadota
- Species Cirsium yamense Turrill accepted as Cirsium aduncum Fisch. & C.A.Mey. ex DC.
- Species Cirsium yatsu-alpicola Kadota & Y.Amano
- Species Cirsium yatsugatakense Nakai accepted as Cirsium nipponicum var. incomptum (Maxim.) Kitam. ex Ohwi
- Species Cirsium yesoanum Nakai accepted as Cirsium aomorense Nakai
- Species Cirsium yesoense (Maxim.) Nakai accepted as Cirsium yezoense (Maxim.) Makino
- Species Cirsium yezoalpinum H.Koidz. ex Kadota & S.Umezawa
- Species Cirsium yezoense (Maxim.) Makino
- Species Cirsium yildizianum Arabacı & Dirmenci
- Species Cirsium yoshidae Kadota
- Species Cirsium yoshinoi Nakai accepted as Cirsium nipponicum var. yoshinoi (Nakai) Kitam. ex Ohwi
- Species Cirsium yoshizawae Koidz. accepted as Cirsium yezoense (Maxim.) Makino
- Species Cirsium yuki-uenoanum Kadota
- Species Cirsium yunnanense Petr. accepted as Cirsium griseum H.Lév.
- Species Cirsium yuzawae Kadota
- Species Cirsium zamoranense Rzed.
- Species Cirsium zapalowiczii Khek
- Species Cirsium zarkosii Kit Tan, Vold & V.Christodoulou
- Species Cirsium zawoense Kadota
- Species Cirsium zenii Nakai
- Species Cirsium zizianum W.D.J.Koch accepted as Cirsium tuberosum (L.) All.
- Species Cirsium zugazae Losa & P.Monts. accepted as Cirsium pannonicum (L.f.) Link
- Genus Cirsium Adans. accepted as Cirsium Mill.
- Genus Cnicus Gaertn. accepted as Cirsium Mill.
- Genus Cynara L. (12)
- Genus Echinais K.Koch accepted as Cirsium Mill.
- Genus Galactites Moench (4)
- Genus Lamyropsis (Kharadze) Dittrich (5)
- Genus Lophiolepis (Cass.) Cass. accepted as Cirsium Mill.
- Genus Mariana Hill accepted as Silybum Adans.
- Genus Notobasis (Cass.) Cass. (2)
- Genus Nuriaea Susanna, Calleja & Moreyra (2)
- Genus Onotrophe Cass. accepted as Cirsium Mill.
- Genus Orthocentron (Cass.) Cass. accepted as Cirsium Mill.
- Genus Picnomon Adans. (1)
- Genus Ptilostemon Cass. (18)
- Genus Ptilostemum Steud. accepted as Ptilostemon Cass.
- Genus Sillybum Hassk. accepted as Silybum Adans.
- Genus Silybum Adans. (2)
- Genus Tyrimnus (Cass.) Cass. (1)
- Subtribe Carlininae Dumort. (77)
- Subtribe Centaureinae Dumort. (1 092)
- Subtribe Dipterocominae Garcia-Jacas & Susanna (1)
- Subtribe Echinopsidinae accepted as Echinopsinae Dumort.
- Subtribe Echinopsinae Dumort. (192)
- Subtribe Onopordinae Garcia-Jacas & Susanna (82)
- Subtribe Saussureinae Garcia-Jacas & Susanna (652)
- Subtribe Staehelininae Garcia-Jacas & Susanna (7)
- Subtribe Xerantheminae Cass. ex Dumort. (14)
- Genus Carduocirsium E. C. Sennen (3)
- Genus Carthamodes Kuntze
- Genus Carthamoides Vaill. accepted as Carthamus L.
- Genus Carthamoides Wolf accepted as Carduncellus Adans.
- Genus Centaureopappus Heydt
- Genus Centaurium Haller
- Genus Cephalanoplos Neck. accepted as Cirsium Mill.
- Genus Cephalonoplos (Neck. ex DC.) Fourr. accepted as Cirsium Mill.
- Genus Cestrinus Cass. accepted as Rhaponticum Vaill.
- Genus Chamaeleon Cass. accepted as Carlina L. (1)
- Genus Chamaepeuce DC. accepted as Ptilostemon Cass.
- Genus Chamalium Cass.
- Genus Chartolepis Cass. accepted as Centaurea L.
- Genus Cheirolepis Boiss. accepted as Centaurea L.
- Genus Chromatolepis Dulac accepted as Carlina L.
- Genus Chryseis Cass. accepted as Amberboa (Pers.) Less.
- Genus Chrysopappus Takht. accepted as Centaurea L.
- Genus Cirsellium Gaertn. accepted as Atractylis L.
- Genus Cistrum Hill accepted as Centaurea L.
- Genus Clavena DC. accepted as Carduus L.
- Genus Clomium Adans. accepted as Carduus L.
- Genus Cnicus L. accepted as Cirsium Mill. (3)
- Genus Colymbada Hill accepted as Centaurea L. (1)
- Genus Crepula Hill accepted as Centaurea L.
- Genus Crocodilina Bubani accepted as Atractylis L.
- Genus Crupinastrum Schur accepted as Serratula L.
- Genus Cyananthus Raf. accepted as Centaurea L.
- Genus Cyanastrum Cass. accepted as Volutaria Cass.
- Genus Cyanopsis Cass. accepted as Volutaria Cass.
- Genus Cyanus (Juss.) Mill. accepted as Centaurea L. (43)
- Genus Cyathidium Lindl. ex Royle accepted as Saussurea DC.
- Genus Cynaroides (Boiss. ex Walp.) Dostál accepted as Centaurea L.
- Genus Cynaropsis Kuntze accepted as Cynara L.
- Genus Derderia Jaub. & Spach accepted as Jurinea Cass.
- Genus Durandoa Pomel accepted as Carthamus L.
- Genus Echenais Cass. accepted as Cirsium Mill.
- Genus Echinanthus Neck. accepted as Echinops L.
- Genus Echinopsus St.-Lag. accepted as Echinops L.
- Genus Echinopus Mill. accepted as Echinops L.
- Genus Epitrachys (DC. ex Duby) K.Koch accepted as Cirsium Mill.
- Genus Eremopappus Takht. accepted as Centaurea L.
- Genus Erinacella (Rech.f.) Dostál accepted as Centaurea L.
- Genus Eriocoryne Wall. ex DC. accepted as Saussurea DC.
- Genus Eriolepis Cass. accepted as Cirsium Mill.
- Genus Eriopha Hill accepted as Centaurea L.
- Genus Eriostemon Less. accepted as Saussurea DC.
- Genus Erythrolaena Sweet accepted as Cirsium Mill.
- Genus Fornicium Cass. accepted as Rhaponticum Vaill.
- Genus Frolovia (DC.) Lipsch. accepted as Dolomiaea DC.
- Genus Giraldia Baroni accepted as Atractylodes DC.
- Genus Halocharis M.Bieb. ex DC.
- Genus Haplotaxis Endl.
- Genus Hemistepta Bunge accepted as Saussurea DC. (1)
- Genus Heterolophus Cass. accepted as Psephellus Cass.
- Genus Heterotrichum M.Bieb.
- Genus Hirtellina (Cass.) Cass. accepted as Staehelina L.
- Genus Hyalea (DC.) Jaub. & Spach accepted as Centaurea L. (1)
- Genus Hyalochaete Dittrich & Rech.f. accepted as Jurinea Cass. (1)
- Genus Hymenocentron Cass. accepted as Centaurea L.
- Genus Jacea Mill. accepted as Centaurea L. (1)
- Genus Jaceacosta Rauschert
- Genus Jaceitrapa Rauschert
- Genus Jurinella Jaub. & Spach accepted as Jurinea Cass. (2)
- Genus Kentrophyllum Neck. ex DC. accepted as Carthamus L. (1)
- Genus Kentrophyllum Neck.
- Genus Lacellia Viv.
- Genus Lagurostemon Cass. accepted as Saussurea DC.
- Genus Lamyra (Cass.) Cass. accepted as Ptilostemon Cass. (4)
- Genus Lappa Tourn. ex Scop. accepted as Arctium L. (6)
- Genus Leucacantha Nieuwl. & Lunell accepted as Centaurea L.
- Genus Leucantha Gray
- Genus Lipschitziella Kamelin accepted as Jurinea Cass.
- Genus Lipskyella Juz. accepted as Cousinia Cass. (1)
- Genus Lupsia Neck. ex Neck. accepted as Galactites Moench
- Genus Lyrolepis Rech.f. accepted as Carlina L.
- Genus Mastrucium Cass. accepted as Serratula L.
- Genus Mazzettia Iljin
- Genus Microlonchoides Candargy accepted as Jurinea Cass.
- Genus Microlophus Cass. accepted as Centaurea L.
- Genus Modestia Kharadze & Tamamsch. accepted as Anacantha (Iljin) Soják (1)
- Genus Ochrocephala Dittrich accepted as Rhaponticum Vaill. (1)
- Genus Odontolophus Cass. accepted as Psephellus Cass.
- Genus Onobroma Gaertn. accepted as Carduncellus Adans. (1)
- Genus Outreya Jaub. & Spach accepted as Jurinea Cass.
- Genus Palaeocyanus Dostál accepted as Cheirolophus Cass.
- Genus Perplexia Iljin accepted as Jurinea Cass. (1)
- Genus Phaeopappus (DC.) Boiss. accepted as Centaurea L. (1)
- Genus Platyraphium Cass. accepted as Ptilostemon Cass.
- Genus Polyacantha Gray accepted as Notobasis (Cass.) Cass.
- Genus Ptosimopappus Boiss. accepted as Cheirolophus Cass.
- Genus Rhacoma Adans.
- Genus Rhaponticum Ludw. accepted as Rhaponticum Vaill.
- Genus Schumeria Iljin accepted as Klasea Cass. (1)
- Genus Sosnovskya Takht. accepted as Centaurea L.
- Genus Stechmannia DC. accepted as Jurinea Cass.
- Genus Stemmacantha Cass. accepted as Rhaponticum Vaill. (8)
- Genus Stephanochilus Coss. & Durieu ex Maire accepted as Centaurea L. (1)
- Genus Takeikadzuchia Kitag. & Kitam. accepted as Olgaea Iljin
- Genus Theodorea (Cass.) Neck. ex Cass. accepted as Saussurea DC.
- Genus Thevenotula Kuntze accepted as Thevenotia DC.
- Genus Tiarocarpus Rech.f. accepted as Cousinia Cass. (3)
- Genus Tomanthea DC. accepted as Centaurea L.
- Genus Vilaria Guett. accepted as Berardia Vill.
- Genus Vladimiria Iljin accepted as Dolomiaea DC.
- Genus Volutarella Cass. accepted as Volutaria Cass. (6)
- Genus Wagenitzia Dostál accepted as Centaurea L.
- Genus Xanthopsis (DC.) K.Koch accepted as Psephellus Cass.
- Genus Xeroloma Cass. accepted as Xeranthemum L.
- Tribe Cynareae Less. accepted as Cardueae Cass.
- Tribe Cynarocephalae Lam. & DC. accepted as Cardueae Cass.
- Tribe Oldenburgieae S.Ortiz (4)
- Tribe Tarchonantheae Kostel. (20)
- Tribe Tarchonantheae Vis.
- 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.
