Ariocarpus retusus Scheidw. [ Mammillaria prismatica (Lemaire) Hemsley]
no HD illustration available (m1)
Ariocarpus retusus Scheidw. [] [Cactaceae]
W. Curtis, Bot. Mag., vol. 119 [ser. 3, vol. 49]: t. 7279 (1893) [J. Allen]