Cephalocereus royenii (L.) Britton & Rose in Contr. U.S. Natl. Herb. 12: 419. 1909
Cephalocereus royenii in Contr. U.S. Natl. Herb. 12: 419. 1909
is new combination for Cactus royenii, Sp. Pl.: 467. 1753
Cephalocereus royenii in Contr. U.S. Natl. Herb. 12: 419. 1909
Taxon for this name