Antennaria viscidula (E.E.Nelson) A.Nelson ex Rydb. accepted as Antennaria rosea subsp. arida (E.E.Nelson) R.J.Bayer (original description)
Aster canbyi (A.Gray) Vasey ex Rydb. accepted as Symphyotrichum foliaceum var. canbyi (A.Gray) G.L.Nesom (original description)
Carduus pulchellus Greene accepted as Cirsium calcareum (M.E.Jones) Wooton & Standl. (original description)
Carduus pulchellus Greene ex Rydb. accepted as Cirsium calcareum (M.E.Jones) Wooton & Standl. (original description)
Carduus truncatus Greene accepted as Cirsium calcareum (M.E.Jones) Wooton & Standl. (original description)
Chrysopsis arida A.Nelson accepted as Heterotheca villosa var. minor (Hook.) Semple (original description)
Erigeron superbus Greene (original description)
Eupatorium texense (Torr. & A.Gray) Rydb. accepted as Ageratina havanensis (Kunth) R.M.King & H.Rob. (original description)