Pachycereus columna-trajani (Karw. ex Pfeiff.) Britton & Rose in Contr. U.S. Natl. Herb. 12: 421. 1909
Pachycereus columna-trajani in Contr. U.S. Natl. Herb. 12: 421. 1909
is new combination for Cereus columna-trajani, Enum. Diagn. Cact.: 76. 1837