Mammillaria kewensis Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 112. 1850 Mammillaria kewensis Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 112. 1850is basionym for Neomammillaria kewensis (Salm-Dyck) Britton & Rose, Cactaceae 4: 104–105, f. 106. 1923Taxon for this nameMammillaria kewensis Salm-Dyck