Asclepias engelmanniana Woodson [ Acerates auriculata Engelm. ex Torr.]
      
no HD illustration available (m4)
6 96332 Asclepias engelmanniana Woodson Asclepiadaceae
W.A. Bell, M.B. Cantab, New Tracks N. Amer., vol. 1 : t. 1 (1869) [W.G. Smith]