Mammillaria bicolor var. longispina Salm-Dyck, Cact. Hort. Dyck., ed. 1844: 6. 1845 Mammillaria bicolor var. longispina Salm-Dyck, Cact. Hort. Dyck., ed. 1844: 6. 1845Taxon for this nameMammillaria bicolor var. longispina Salm-Dyck
