Physostegia virginiana (L.) Benth.
      
no HD illustration available (m3)
2 788135 Physostegia virginiana (L.) Benth. [80 359276 Dracocephalum virginianum L.] Labiatae
Rev. Hort. (Paris), ser. 4, vol. 70 (70e ANNÉE - 1898): (1898)