Sclerocactus cloverae subsp. brackii Heil & Porter  
Family: Cactaceae
[Pediocactus cloverae subsp. brackii (K.D. Heil & J.M. Porter) Halda,  more]
Sclerocactus cloverae subsp. brackii image
Photo ©Al Schneider, swcoloradowildflowers.com  
Sclerocactus cloverae subsp. brackii
Sclerocactus cloverae subsp. brackii image
Photo ©Al Schneider, swcoloradowildflowers.com