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