Astrophytum capricorne (A.Dietr.) Britton & Rose
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Astrophytum capricorne (A.Dietr.) Britton & Rose [ Echinocactus capricornis A.Dietr.] [Cactaceae]
N.L. Britton, J.N. Rose, Cact., vol. 3 : t. 21 (1922) [M.E. Eaton]