Sclerocactus parviflorus subsp. havasupaiensis (Clover) Hochstätter in Succulenta (Netherlands) 74(1): 38. 1995
Sclerocactus parviflorus subsp. havasupaiensis in Succulenta (Netherlands) 74(1): 38. 1995
is new combination for Sclerocactus havasupaiensis in Amer. J. Bot. 29(2): 172. 1942