Mammillaria bicolor var. cristata Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 9. 1850 Mammillaria bicolor var. cristata Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 9. 1850is basionym for Mammillaria bicolor f. cristata (Salm-Dyck) Schelle, Handb. Kakteenkult.: 263. 1907Taxon for this nameMammillaria bicolor var. cristata Salm-Dyck