Cylindropuntia echinocarpa (Engelm. & J.M.Bigelow) F.M.Knuth [ Opuntia echinocarpa Engelm. & J.M.Bigelow]
no HD illustration available (m1)
Cylindropuntia echinocarpa (Engelm. & J.M.Bigelow) F.M.Knuth [ Opuntia echinocarpa Engelm. & J.M.Bigelow] [Cactaceae]
J. Torrey, Pacif. Railr. Rep., vol. 4 fasicle 3, : t. 18 (1853-1856) [P. Roetter]