Calystegia silvatica subsp. orientalis Brummitt
Calystegia silvatica subsp. orientalis Brummitt is a synonym sensu FNA Ed. Comm., 2023c of:
Calystegia silvatica subsp. fraterniflora (Mackenzie & Bush) Brummitt, an accepted subspecies name sensu FNA Ed. Comm., 2023c.