Carduus brownii Eastw. (original description)
Carduus brownii Eastw. ex A.Heller (original description)
Chrysothamnus gramineus H.M.Hall accepted as Cuniculotinus gramineus (H.M.Hall) Urbatsch, R.P.Roberts & Neubig (original description)
Corethrogyne rigida (Benth.) A.Heller accepted as Corethrogyne filaginifolia (Hook. & Arn.) Nutt. (original description)
Hieracium nudicaule (A.Gray) A.Heller (original description)
Malacolepis A.Heller accepted as Malacothrix DC. (original description)
Malacolepis coulteri A.Heller accepted as Malacothrix coulteri Harv. & A.Gray (original description)
Scorzonella lepidota A.Heller accepted as Microseris sylvatica (Benth.) Sch.Bip. (original description)
Tanacetum compactum H.M.Hall accepted as Sphaeromeria compacta (H.M.Hall) A.H.Holmgren, L.M.Shultz & Lowrey (original description)