Echinocereus fasciculatus (Engelm. ex S. Watson) L.D. Benson Echinocereus fasciculatus (Engelm. ex S. Watson) L.D. Benson, Cacti Ariz., ed. 3: 21. 1969 sec. Guzmán & al. 2003≡Mammillaria fasciculata Engelm. ex S. Watson in Smithsonian Misc. Collect. 258: 402. 1878 syn. sec. Guzmán & al. 2003