Pachycereus marginatus (DC.) Britton & Rose in Contr. U.S. Natl. Herb. 12: 421. 1909 Pachycereus marginatus (DC.) Britton & Rose in Contr. U.S. Natl. Herb. 12: 421. 1909is new combination for Cereus marginatus DC. in Mém. Mus. Hist. Nat. 17: 116. 1828Taxon for this namePachycereus marginatus (DC.) Britton & Rose