Agoseris glauca var. aspera (Rydb.) Cronquist accepted as Agoseris glauca (Pursh) Raf. (original description)
Antennaria arcuata Cronquist (original description)
Antennaria neglecta var. howellii (Greene) Cronquist accepted as Antennaria howellii Greene (original description)
Artemisia campestris var. purshii (Besser ex Hook.) Cronquist accepted as Artemisia borealis subsp. borealis (original description)
Artemisia campestris var. wormskioldii (Besser ex Hook.) Cronquist (original description)
Artemisia papposa S.F.Blake & Cronquist (original description)
Aster hesperius var. hesperius Cronquist accepted as Aster hesperius A.Gray accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom (original description)
Aster hesperius var. laetevirens (Greene) Cronquist accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom (original description)
Aster pansus (S.F.Blake) Cronquist accepted as Symphyotrichum ericoides (L.) G.L.Nesom (original description)
Chrysothamnus nauseosus var. petrophilus Cronquist (original description)
Cirsium davisii Cronquist accepted as Cirsium inamoenum var. davisii (Cronquist) D.J.Keil (original description)
Erigeron compactus var. consimilis (Cronquist) S.F.Blake accepted as Erigeron consimilis Cronquist (original description)
Haplopappus peirsonii (D.D.Keck) J.T.Howell accepted as Lorandersonia peirsonii (D.D.Keck) Urbatsch, R.P.Roberts & Neubig accepted as Toiyabea peirsonii (D.D. Keck) Nesom (original description)
Haplopappus whitneyi var. discoideus J.T.Howell accepted as Hazardia whitneyi var. discoidea (J.T.Howell) W.D.Clark accepted as Adeia discoidea (J.T. Howell) G.L. Nesom (original description)
Schkuhria wislizeni f. flava (Rydb.) S.F.Blake (original description)
Schkuhria wislizeni var. frustrata S.F.Blake accepted as Schkuhria pinnata (Lam.) Kuntze ex Thell. (original description)
Schkuhria wislizeni var. guatemalensis (Rydb.) S.F.Blake (original description)
Schkuhria wislizeni var. wrightii (A.Gray) S.F.Blake accepted as Schkuhria pinnata (Lam.) Kuntze ex Thell. (original description)
Senecio bivestitus Cronquist accepted as Tephroseris lindstroemii (Ostenf.) Á.Löve & D.Löve (original description)
Senecio integerrimus var. exaltatus (Nutt.) Cronquist (original description)
Stephanomeria tenuifolia var. myrioclada (D.C.Eaton) Cronquist accepted as Stephanomeria tenuifolia (Raf.) H.M.Hall (original description)
Tanacetum potentilloides var. nitrophilum Cronquist accepted as Sphaeromeria potentilloides var. nitrophila (Cronquist) A.H.Holmgren, L.M.Shultz & Lowrey (original description)
Tanacetum potentilloides var. potentilloides Cronquist accepted as Tanacetum potentilloides (A.Gray) A.Gray accepted as Sphaeromeria potentilloides (A.Gray) A.Heller (original description)
Townsendia florifera var. watsonii (A.Gray) Cronquist (original description)
Verbesina angustissima S.F.Blake (original description)