Pilocereus purpusii (Britton & Rose) F.M.Knuth, Kaktus-ABC: 33. 1936 ["1935"] Pilocereus purpusii (Britton & Rose) F.M.Knuth, Kaktus-ABC: 33. 1936 ["1935"]is new combination for Cephalocereus purpusii Britton & Rose, Cactaceae 2: 56. 1920Taxon for this namePilocereus purpusii (Britton & Rose) F.M.Knuth