Opuntia sphaerocarpa Engelm. & J.M.Bigelow
      
no HD illustration available (m3)
2 720846 Opuntia sphaerocarpa Engelm. & J.M.Bigelow Cactaceae
J. Torrey, Pacif. Railr. Rep., vol. 4 fasicle 3, : t. 13 (1853-1856) [P. Roetter]