Agoseris aurantiaca var. aurantiaca (Hook.) Cronquist (original description)
Agoseris aurantiaca var. purpurea (A.Gray) Cronquist accepted as Agoseris aurantiaca (Hook.) Greene (original description)
Cirsium carolinianum (Walter) Fernald & B.G.Schub. (original description)
Erigeron compositus f. trifidus (Hook.) Fernald accepted as Erigeron trifidus Hook. (original description)
Eupatorium hyssopifolium var. calcaratum Fernald & B.G.Schub. accepted as Eupatorium hyssopifolium var. hyssopifolium L. (original description)
Eupatorium rotundifolium var. saundersii (Porter ex Britton) Cronquist accepted as Eupatorium pilosum Walter (original description)
Lactuca floridana var. floridana Cronquist accepted as Lactuca floridana (L.) Gaertn. (original description)
Lactuca floridana var. villosa (Jacq.) Cronquist accepted as Lactuca floridana (L.) Gaertn. (original description)
Prenanthes racemosa subsp. multiflora Cronquist accepted as Nabalus racemosus (Michx.) Hook. (original description)
Prenanthes racemosa subsp. racemosa Cronquist (original description)