Bidens longistyla C.R.Hart (original description)
Brickellia nesomii B.L.Turner accepted as Phanerostylis nesomii (B.L.Turner) R.M.King & H.Rob. (original description)
Calea orizabaensis var. websteri Wussow & Urbatsch accepted as Tetrachyron websteri (Wussow & Urbatsch) B.L.Turner (original description)
Chrysopsis linearifolia Semple (original description)
Chrysopsis linearifolia subsp. dressii Semple (original description)
Duidaea marahuacensis Steyerm. (original description)
Erigeron hessii G.L.Nesom (original description)
Senecio moranii T.M.Barkley (original description)