Physostegia virginiana (L.) Benth. [ Dracocephalum virginianum L.]
      
no HD illustration available (m3)
6 788135 Physostegia virginiana (L.) Benth. [125 359276 Dracocephalum virginianum L.] Labiatae
W. Curtis, Bot. Mag., vol. 13 : t. 467 (1799) [S.T. Edwards]