Hedysarum boreale Nutt. [ Hedysarum mackenzii Richardson]
no HD illustration available (m1)
Hedysarum boreale Nutt. [ Hedysarum mackenzii Richardson] [Papilionaceae]
M.V. Walcott, N. Amer. Wild Fl., vol. 2 : t. 97 (1925-1927)