Helianthocereus poco (Backeb.) Backeb. in Cact. Succ. J. (Los Angeles) 23: 48. 1951
Helianthocereus poco in Cact. Succ. J. (Los Angeles) 23: 48. 1951
is new combination for Trichocereus poco, Kaktus-ABC: 204. 1936 ["1935"]
Helianthocereus poco in Cact. Succ. J. (Los Angeles) 23: 48. 1951