TAXONOMY & SYSTEMATICS
Sclerocactus blainei SB 1540, Nevada
Sclerocactus glaucus SB 1749, Colorado
Sclerocactus mesae verdae fh 061.6, New Mexico
Sclerocactus mesae-verdae RP 111, Colorado
Sclerocactus mesae-verdae SB 71, Colorado
Sclerocactus nyensis RP 137, Nevada
Sclerocactus parviflorus SB 1011, New Mexico
Sclerocactus polyancistrus f albino fh Kalifornien
Sclerocactus polyancistrus SB 1967, Kalifornian
Sclerocactus pubispinus JB 1, Nevada
Sclerocactus spinosior SB 693, Utah
Sclerocactus spinosior ssp. blainei SB 1540, Nevada
Sclerocactus ilseae RP 25, Utah
>Sclerocactus wetlandicus fh 69.93, Utah
Sclerocactus wetlandicus, fh 69.94, Utah
Sclerocactus whipplei ssp. busekii SB-1086, Arizona
Sclerocactus wrightiae HK 1336, Utah