Echinocereus fendleri (Engelm.) Rümpler, nom. inval., Echinocereus fendleri (Engelm.) Rümpler, Handb. Cacteenk. (ed. 2): 801. 1885, nom. inval. sec. Villaseñor 2016≡Cereus fendleri Engelm. in Mem. Amer. Acad. Arts, n.s., 4: 51. 1849 syn. sec. Guzmán & al. 2003