Sclerocactus whipplei subsp. heilii (Castetter, P.Pierce & K.H.Schwer.) D.R.Hunt in Cactaceae Syst. Init. 20: 23. 2005
Sclerocactus whipplei subsp. heilii in Cactaceae Syst. Init. 20: 23. 2005
is new combination for Sclerocactus whipplei var. heilii in Cact. Succ. J. (Los Angeles) 48(2): 79–80, f. 3–4. 1976
Sclerocactus whipplei subsp. heilii in Cactaceae Syst. Init. 20: 23. 2005