Mammillaria amoena Hoppfer ex Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 99. 1850 Mammillaria amoena Hoppfer ex Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 99. 1850is basionym for Neomammillaria amoena (Hoppfer ex Salm-Dyck) Britton & Rose, Cactaceae 4: 120–121. 1923Taxon for this nameMammillaria amoena Hoppfer ex Salm-Dyck