Sclerocactus Britton & Rose [Cactaceae-Cactoideae-Cacteae]. 14 Texas, Utah, Colorado, New Mexico, Nevada, Arizona, California, Nevada, Nuevo Leon, Chihuahua, San Louis Potosi, Coahuila
Echinocactus sp. Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 35 () [P. Roetter]
16 370970 Echinomastus intertextus (Engelm.) Britton & Rose [-1] Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 34 () [P. Roetter]
16 370970 Echinomastus intertextus (Engelm.) Britton & Rose [-1] C.F. Förster, T. Rümpler, Handb. Cacteenk., ed. 2, vol. 2 : t. 72 (1886)
6 924244 Sclerocactus scheeri (Salm-Dyck) N.P. Taylor [125 369560 Echinocactus scheeri Salm-Dyck] Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 18 () [P. Roetter]
6 924244 Sclerocactus scheeri (Salm-Dyck) N.P. Taylor [125 369560 Echinocactus scheeri Salm-Dyck] Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 19 () [P. Roetter]