Sclerocactus polyancistrus (Engelm. & J.M. Bigelow) Britton & Rose [ Echinocactus polyancistrus Engelm. & J.M.Bigelow]
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Sclerocactus polyancistrus (Engelm. & J.M. Bigelow) Britton & Rose [ Echinocactus polyancistrus Engelm. & J.M.Bigelow] [Cactaceae]
J. Torrey, Pacif. Railr. Rep., vol. 4 fasicle 3, : t. 2 (1853-1856) [P. Roetter]