Mammillaria brevimamma var. exsudans (Zucc. ex Pfeiff.) Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 19. 1850 Mammillaria brevimamma var. exsudans (Zucc. ex Pfeiff.) Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 19. 1850Taxon for this nameMammillaria brevimamma var. exsudans (Zucc. ex Pfeiff.) Salm-Dyck
