Ageratina aromatica var. incisa (A.Gray) C.F.Reed accepted as Ageratina jucunda (Greene) Clewell & Wooten (original description)
Ageratina aromatica var. incisa (A.Gray) Reed (original description)
Ageratina astellera (B.L.Turner) B.L.Turner accepted as Ageratina miquihuana (B.L.Turner) R.M.King & H.Rob. (original description)
Ageratina mairetiana var. elucens (McVaugh) B.L.Turner (original description)
Ageratina oppositifolia (A.Gray) B.L.Turner accepted as Ageratina mygindaefolia (A.Gray) R.M.King & H.Rob. (original description)
Ageratina riskindii B.L.Turner (original description)
Ageratina seleri B.L.Turner (original description)
Ageratina yecorana B.L.Turner (original description)
Aster cordifolius var. sagittifolius (Wedem. ex Willd.) A.G.Jones accepted as Symphyotrichum cordifolium (L.) G.L.Nesom (original description)
Aster novi-belgii var. tardiflorus (L.) A.G.Jones accepted as Symphyotrichum tardiflorum (L.) Greuter, M.V.Agab. & Wagenitz (original description)
Heterotheca chihuahuana (B.L.Turner & S.D.Sundb.) B.L.Turner (original description)
Viguiera benziorum B.L.Turner (original description)
Viguiera vorobikiae B.L.Turner (original description)