Pediocactus unguispinus var. durangensis (Runge) Halda in Acta Mus. Richnov., Sect. Nat., 5(1): 26. 1998
Pediocactus unguispinus var. durangensis in Acta Mus. Richnov., Sect. Nat., 5(1): 26. 1998
is new combination for Echinocactus durangensis in Hamburger Garten- Blumenzeitung 56: 231. 1890