Mammillaria viridula var. minima Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 10. 1850 Mammillaria viridula var. minima Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 10. 1850Taxon for this nameMammillaria viridula var. minima Salm-Dyck