Physostegia virginiana (L.) Benth.
no HD illustration available (m1)
Physostegia virginiana (L.) Benth. [ Dracocephalum virginianum L.] [Labiatae]
A. Munting, Naauwk. Beschr. Aardgewassen, vol. 1 : p. 552, t. 153 (1696)