Echinocereus knippelianus Liebner subsp. knippelianus in Monatsschr. Kakteenk. 5: 170. 1895 sec. Guzmán & al. 2003
- =Cereus knippelianus (Liebner) Orcutt in W. Amer. Sci. 13: 27. 1902 syn. sec. Guzmán & al. 2003
- =Echinocereus knippelianus subsp. klapani Halda & Sladk. in Acta Mus. Richnov. Sect. Nat., 7: 34. 2000 syn. sec. ???