Physostegia virginiana subsp. praemorsa (Shinners) P.D. Cantino Physostegia virginiana subsp. praemorsa (Shinners) P.D. Cantino in Contr. Gray Herb. 211: 97. 1982 sec. Govaerts 2013=Physostegia praemorsa Shinners in Field & Lab. 19(4): 166-167. 1951 syn. sec. The Plant List 2013