Sclerocactus nyensis Hochstätter in Succulenta (Netherlands) 71(6): 253–255. 1992 sec. Parfitt & Gibson 2003
- ≡Pediocactus nyensis (Hochstätter) Halda in Acta Mus. Richnov., Sect. Nat., 5(1): 15. 1998 syn. sec. Parfitt & Gibson 2003
- ≡Sclerocactus spinosior subsp. nyensis (Hochstätter) Lüthy in Cactaceae Syst. Init. 23: 28. 2008 syn. sec. ???