Mammillaria cornifera var. impexicoma (Lem.) Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 20. 1850 Mammillaria cornifera var. impexicoma (Lem.) Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 20. 1850Taxon for this nameMammillaria cornifera var. impexicoma (Lem.) Salm-Dyck
