Mammillaria schelhasii var. sericata (Lem.) Salm-Dyck, Cact. Hort. Dyck., ed. 1844: 4. 1845 Mammillaria schelhasii var. sericata (Lem.) Salm-Dyck, Cact. Hort. Dyck., ed. 1844: 4. 1845is new combination for Mammillaria sericata Lem., Cact. Gen. Sp. Nov.: 44. 1839Taxon for this nameMammillaria schelhasii var. sericata (Lem.) Salm-Dyck