716666 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]
716676 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]
1181406 924244 Sclerocactus scheeri (Salm-Dyck) N.P. Taylor [125 369560 Echinocactus scheeri Salm-Dyck] C.F. Förster, T. Rümpler, Handb. Cacteenk., ed. 2, vol. 2 : t. 64 (1886)
2969646 924244 Sclerocactus scheeri (Salm-Dyck) N.P. Taylor [125 369560 Echinocactus scheeri Salm-Dyck] A. Peter, Botanische Wandtafeln: t. 10, fig. 3 (1901)
