Mammillaria polytricha var. hexacantha Salm-Dyck in Allg. Gartenzeitung 10: 289. 1842
Mammillaria polytricha var. hexacantha in Allg. Gartenzeitung 10: 289. 1842
is basionym for Mammillaria polythele var. hexacantha, Cact. Hort. Dyck., ed. 1849: 15. 1850