Place of Publication
Cact. Succ. J. [Los Angeles] 25: 34 (1953)
References
-
Hutchison (1953)
Hutchison, P.C. 1953. Studies of the South American Cactaceae. 2: Echinocactus humilis Phillipi. A Chilean endemic with primarily juvenile stems. Cactus and Succulent Journal (Los Angeles), 25:34-37