Pilocereus keyensis (Britton & Rose) F.M.Knuth, Kaktus-ABC: 331. 1936 ["1935"] Pilocereus keyensis (Britton & Rose) F.M.Knuth, Kaktus-ABC: 331. 1936 ["1935"]is new combination for Cephalocereus keyensis Britton & Rose in Contr. U.S. Natl. Herb. 12: 416. 1909Taxon for this namePilocereus keyensis (Britton & Rose) F.M.Knuth