Peniocereus viperinus (F.A.C. Weber) Buxb., Kakteen 62: C Iia. 1975 sec. Hunt 2016
- ≡Cereus viperinus F.A.C. Weber in Bull. Mus. Hist. Nat. (Paris) 10: 385. 1904 syn. sec. Guzmán & al. 2003
- =Wilcoxia viperina (F.A.C. Weber) Britton & Rose in Contr. U.S. Natl. Herb. 16: 242. 1913 syn. sec. Guzmán & al. 2003
- =Cullmannia viperina (F.A.C. Weber) Distefano in Kakteen And. Sukk. 7: 9. 1956 syn. sec. Guzmán & al. 2003
- =Wilcoxia tomentosa Bravo in Cact. Suc. Mex. 3: 28. 1958 syn. sec. Guzmán & al. 2003
- =Wilcoxia viperina var. tomentosa (Bravo) Bravo in Cact. Suc. Mex. 19: 47. 1974 syn. sec. Guzmán & al. 2003