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Sclerocactus spinosior (Engelm.) D.Woodruff & L.D.Benson in Cact. Succ. J. (Los Angeles) 48(3): 131. 1976
Sclerocactus spinosior var. blainei (S.L.Welsh & K.H.Thorne) R.May in Cact. Succ. J. (Los Angeles) 60(1): 35, 45. 1988
Sclerocactus spinosior var. schlesseri (K.D.Heil & S.L.Welsh) R.May in Cact. Succ. J. (Los Angeles) 60: 35. 1988