Physostegia virginiana (L.) Benth. [ Dracocephalum virginianum L.]
      

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6 788135 Physostegia virginiana (L.) Benth. [125 359276 Dracocephalum virginianum L.] Labiatae
Coll. Vélins Mus. Natl. Hist. Nat. Paris, vol. 21 : t. 38 () [unsigned]