Amauria brandegeeana (Rose) Rydb. (original description)
Amauriopsis Rydb. accepted as Hymenothrix A.Gray (original description)
Amauriopsis dissecta (A.Gray) Rydb. accepted as Hymenothrix dissecta (A.Gray) B.G.Baldwin (original description)
Bahia aristata Rydb. accepted as Picradeniopsis schaffneri var. aristata (Rydb.) B.G.Baldwin (original description)
Bahia ehrenbergii Sch.Bip. ex Rydb. accepted as Bahia xylopoda Greenm. accepted as Picradeniopsis xylopoda (Greenm.) B.G.Baldwin (original description)
Bahiinae Rydb. (original description)
Baileya australis Rydb. accepted as Baileya multiradiata Harv. & A.Gray ex Torr. (original description)
Baileya perennis (A.Nelson) Rydb. accepted as Baileya pleniradiata Harv. & A.Gray ex Harv. & A.Gray (original description)
Baileya thurberi Rydb. accepted as Baileya multiradiata Harv. & A.Gray ex Torr. (original description)
Cephalobembix Rydb. accepted as Picradeniopsis Rydb. ex Britton (original description)
Cephalobembix neomexicana (A.Gray) Rydb. accepted as Picradeniopsis multiflora (Hook. & Arn.) B.G.Baldwin (original description)
Chaenactidinae Rydb. (original description)
Chaenactis aurea Greene (original description)
Chaenactis aurea Greene ex Rydb. (original description)
Chaenactis humilis Rydb. accepted as Chaenactis douglasii (Hook.) Hook. & Arn. (original description)
Chaenactis rubricaulis Rydb. accepted as Chaenactis douglasii (Hook.) Hook. & Arn. (original description)
Florestina latifolia (DC.) Rydb. (original description)
Florestina purpurea (Brandegee) Rydb. (original description)
Galeana arenarioides (Hook. & Arn.) Rydb. accepted as Galeana pratensis (Kunth) Rydb. (original description)
Galeana pratensis (Kunth) Rydb. (original description)
Hulsea callicarpha (H.M.Hall) S.Watson ex Rydb. accepted as Hulsea vestita subsp. callicarpha (H.M.Hall) Wilken (original description)
Hulsea larsenii (A.Gray) Rydb. accepted as Hulsea nana A.Gray (original description)
Hulsea mexicana Rydb. (original description)
Hymenopappus columbianus Rydb. (original description)
Hymenopappus glandulosus (S.Watson) Rydb. (original description)
Hymenopappus nanus Rydb. accepted as Hymenopappus filifolius var. nanus (Rydb.) B.L.Turner (original description)
Hymenopappus nelsonii Rydb. (original description)
Hymenopappus niveus Rydb. (original description)
Hymenopappus petaloideus Rydb. (original description)
Laphamia laciniata (A.Gray ex A.Gray) Rydb. accepted as Perityle angustifolia (A.Gray) Shinners (original description)
Laphamia rotundata Rydb. accepted as Perityle lindheimeri (A.Gray) Shinners (original description)
Leptopharynx Rydb. accepted as Perityle Benth. (original description)
Leptopharynx aglossa (A.Gray) Rydb. accepted as Perityle aglossa A.Gray (original description)
Leptopharynx cordifolia Rydb. (original description)
Leptopharynx dissecta (A.Gray) Rydb. accepted as Perityle dissecta (Torr.) A.Gray (original description)
Leptopharynx gilensis (M.E.Jones) Rydb. accepted as Perityle gilensis (M.E.Jones) J.F.Macbr. (original description)
Leptopharynx grandifolia (Brandegee) Rydb. (original description)
Leptopharynx lemmonii (A.Gray) Rydb. accepted as Perityle lemmonii (A.Gray) J.F.Macbr. (original description)
Leptopharynx leptoglossa (Harv. & A.Gray) Rydb. (original description)
Leptopharynx lloydii (B.L.Rob. & Fernald) Rydb. (original description)
Leptopharynx lobata Rydb. (original description)
Leptopharynx palmeri (S.Watson) Rydb. (original description)
Leptopharynx parryi (A.Gray) Rydb. accepted as Perityle parryi A.Gray (original description)
Leptopharynx trisecta Rydb. (original description)
Loxothysanus pedunculatus Rydb. (original description)
Monothrix congesta (M.E.Jones) Rydb. accepted as Perityle congesta (M.E.Jones) Shinners (original description)
Monothrix fastigiata (Brandegee) Rydb. (original description)
Monothrix intricata (Brandegee) Rydb. accepted as Perityle intricata (Brandegee) Shinners (original description)
Monothrix megalocephala Rydb. (original description)
Monothrix palmeri (A.Gray) Rydb. (original description)
Monothrix stansburyi (A.Gray) Rydb. accepted as Perityle stansburyi (A.Gray) J.F.Macbr. (original description)
Monothrix toumeyi (B.L.Rob. & Greenm.) Rydb. (original description)
Nesothamnus Rydb. accepted as Perityle Benth. (original description)
Nesothamnus incanus (A.Gray) Rydb. (original description)
Othake canescens Rydb. (original description)
Othake robustum Rydb. accepted as Palafoxia texana var. robusta (Rydb.) B.L.Turner & M.I.Morris (original description)
Pappothrix (A.Gray) Rydb. accepted as Perityle Benth. (original description)
Pappothrix cernua (Greene) Rydb. accepted as Perityle cernua (Greene) Shinners (original description)
Pappothrix cinerea (A.Gray) Rydb. accepted as Perityle cinerea (A.Gray) A.M.Powell (original description)
Pappothrix rupestris (A.Gray) Rydb. accepted as Perityle rupestris (A.Gray) Shinners (original description)
Perityle ciliata (L.H.Dewey) Rydb. (original description)
Perityle gracilis (M.E.Jones) Rydb. (original description)
Perityle hofmeisteria Rydb. (original description)
Perityle lineariloba Rydb. (original description)
Perityle marginata Rydb. accepted as Perityle cuneata var. marginata (Rydb.) I.M.Johnst. (original description)
Perityle robusta Rydb. accepted as Perityle crassifolia var. robusta (Rydb.) Everly (original description)
Perityle spilanthoides (Sch.Bip.) Rydb. (original description)
Perityle urticifolia Rydb. (original description)
Peritylinae Rydb. (original description)
Psilostrophe divaricata Rydb. (original description)
Psilostrophe grandiflora Rydb. (original description)
Psilostrophe hartmanii Rydb. (original description)
Rigiopappus longiaristatus (A.Gray) Rydb. (original description)
Tetracarpum anthemoideum (DC.) Rydb. accepted as Schkuhria pinnata (Lam.) Kuntze ex Thell. (original description)
Tetracarpum flavum Rydb. accepted as Schkuhria pinnata (Lam.) Kuntze ex Thell. (original description)
Tetracarpum guatemalense Rydb. accepted as Schkuhria pinnata (Lam.) Kuntze ex Thell. (original description)
Tetracarpum pringlei (S.Watson) Rydb. accepted as Schkuhria pinnata (Lam.) Kuntze ex Thell. (original description)
Tetracarpum schkuhrioides Rydb. (original description)
Tetracarpum virgatum (La Llave) Rydb. accepted as Schkuhria pinnata (Lam.) Kuntze ex Thell. (original description)
Tetracarpum wislizeni Rydb. (original description)
Tetracarpum wrightii (A.Gray) Rydb. accepted as Schkuhria pinnata (Lam.) Kuntze ex Thell. (original description)
Trichymenia Rydb. accepted as Hymenothrix A.Gray (original description)
Trichymenia wrightii (A.Gray) Rydb. (original description)
Vasquezia achilleoides (Less.) Rydb. (original description)
Venegasia deltoidea Rydb. (original description)
Venegazia deltoidea Rydb. (original description)