Addisonia Rusby accepted as Helogyne Nutt. (original description)
Addisonia virgata Rusby accepted as Helogyne straminea (DC.) B.L.Rob. (original description)
Aster incanopilosus (Lindl.) E.Sheld. accepted as Symphyotrichum falcatum var. commutatum (Torr. & A.Gray) G.L.Nesom (original description)
Aster incanopilosus Sheld (original description)
Aster lateriflorus var. thyrsoideus (A.Gray) E.Sheld. accepted as Symphyotrichum ontarionis (Wiegand) G.L.Nesom (original description)
Aster leiophyllus Porter accepted as Symphyotrichum cordifolium (L.) G.L.Nesom (original description)
Aster leiophyllus var. incisus (Britton) Porter accepted as Symphyotrichum cordifolium (L.) G.L.Nesom (original description)
Bidens aristosa (Michx.) Britton (original description)
Bidens bidentoides (Nutt.) Britton (original description)
Bidens discoidea (Torr. & A.Gray) Britton (original description)
Bidens discoides Britton (original description)
Bidens involucrata (Nutt.) Britton accepted as Bidens polylepis S.F.Blake (original description)
Bidens trichosperma (Michx.) Britton (original description)
Bidens trichosperma var. tenuiloba (A.Gray) Britton accepted as Bidens trichosperma (Michx.) Britton (original description)
Brachychaeta sphacelata (Raf.) Britton accepted as Solidago sphacelata Raf. (original description)
Brachychaeta sphacelata Britton ex Kearn. (original description)
Gnaphalium helleri Britton accepted as Pseudognaphalium helleri subsp. helleri (Britton) Anderb. (original description)
Hieracium greenii Porter & Britton accepted as Hieracium traillii Greene (original description)
Senecio robbinsii Oakes ex Rusby accepted as Packera schweinitziana (Nutt.) W.A.Weber & Á.Löve (original description)
Solidago virgaurea var. gilmanii Porter (original description)
Solidago virgaurea var. monticola Porter (original description)
Solidago virgaurea var. randii Porter (original description)
Solidago virgaurea var. redfieldii Porter (original description)
Verbesina alternifolia (L.) Britton ex Kearney (original description)