Acanthocereus (Engelm. ex A. Berger) Britton & Rose Acanthocereus (Engelm. ex A. Berger) Britton & Rose in Contr. U.S. Natl. Herb. 12: 432. 1909 sec. Hunt & al. 2006≡Cereus subsect. Acanthocereus Engelm. ex A. Berger in Rep. (Annual) Missouri Bot. Gard. 16: 77. 1905 syn. sec. Hunt & al. 2006