Achaetogeron corymbosus Larsen accepted as Erigeron polycephalus (Larsen) G.L.Nesom (original description)
Achaetogeron filiformis Larsen accepted as Erigeron narcissus G.L.Nesom (original description)
Achaetogeron fisheri Larsen accepted as Erigeron neomexicanus A.Gray (original description)
Achaetogeron garciae (S.F.Blake) Larsen accepted as Erigeron griseus (Greenm.) G.L.Nesom (original description)
Achaetogeron polycephalus Larsen accepted as Erigeron polycephalus (Larsen) G.L.Nesom (original description)
Achaetogeron pringlei Larsen accepted as Erigeron oreophilus Greenm. (original description)
Achaetogeron sophiifolius Larsen (original description)