Pilocereus millspaughii (Britton) F.M.Knuth, Kaktus-ABC: 332. 1936 ["1935"] Pilocereus millspaughii (Britton) F.M.Knuth, Kaktus-ABC: 332. 1936 ["1935"]is new combination for Cephalocereus millspaughii Britton in Contr. U.S. Natl. Herb. 12: 417. 1909Taxon for this namePilocereus millspaughii (Britton) F.M.Knuth