Verbatim text: Gibson, A. C. 1990. The systematics and evolution of subtribe Stenocereinae. 8. Organ pipe cactus and its closest relatives. Cact. Succ. J. (Los Angeles) 62: 13–24.
Author: Gibson, A.C.
Year: 1990
Title: The systematics and evolution of subtribe Stenocereinae. 8. Organ pipe cactus and its closest relatives
Journal: Cact. Succ. J. (Los Angeles)
Volume: 62
Pages: 13–24