Echinocereus pentalophus (DC.) Haage Echinocereus pentalophus (DC.) Haage, Cact.-Verz.: 20. 1859 sec. Guzmán & al. 2003≡Cereus pentalophus DC. in Mém. Mus. Hist. Nat. 17: 117. 1828 syn. sec. Guzmán & al. 2003