Thelocactus leucacanthus (Zucc. ex Pfeiff.) Britton & Rose [ Echinocactus leucacanthus Zucc. ex Pfeiff.]
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Thelocactus leucacanthus (Zucc. ex Pfeiff.) Britton & Rose [ Echinocactus leucacanthus Zucc. ex Pfeiff.] [Cactaceae]
L.K.G. Pfeiffer, F. Otto, Abbild. Beschr. Cact. (Coloured version), vol. 1 : p. 14, t. 14 (1839)