Aster kootenayi A.Nelson & J.F.Macbr. accepted as Symphyotrichum hendersonii (Fernald) G.L.Nesom (original description)
Aster perelegans A.Nelson & J.F.Macbr. accepted as Eucephalus elegans Nutt. (original description)
Aster siskiyouensis A.Nelson & J.F.Macbr. accepted as Eucephalus glabratus (Greene) Greene (original description)
Balsamorhiza rosea A.Nelson & J.F.Macbr. (original description)
Balsamorhiza serrata A.Nelson & J.F.Macbr. (original description)
Bidens anthemoides (DC.) Sherff (original description)
Bidens brittonii Sherff accepted as Bidens reptans (L.) G.Don (original description)
Bidens coronata Britton ex Sherff (original description)
Bidens coronata (L.) Britton accepted as Bidens trichosperma (Michx.) Britton (original description)
Bidens deamii Sherff accepted as Bidens pilosa L. (original description)
Bidens dissecta (O.E.Schulz) Sherff (original description)
Bidens mexicana Sherff accepted as Bidens reptans (L.) G.Don (original description)
Bidens parvulifolia Sherff accepted as Bidens chrysanthemifolia (Kunth) Sherff (original description)
Bidens ramosissima Sherff accepted as Bidens pilosa L. (original description)
Bidens schaffneri (A.Gray) Sherff (original description)
Chaenactis mainsiana A.Nelson & J.F.Macbr. accepted as Chaenactis evermannii Greene (original description)
Machaeranthera pulverulenta var. vacans A.Nelson accepted as Dieteria canescens var. aristata (Eastw.) D.R.Morgan & R.L.Hartm. (original description)
Taraxacum fasciculatum A.Nelson (original description)
Tonestus linearis A.Nelson & J.F.Macbr. (original description)
Wyomingia A.Nelson accepted as Erigeron L. (original description)
Wyomingia vivax A.Nelson (original description)