Mammillaria swinglei (Britton & Rose) Boed., Mammillarien-Vergleichs-Schluessel: 33. 1933 Mammillaria swinglei (Britton & Rose) Boed., Mammillarien-Vergleichs-Schluessel: 33. 1933is new combination for Neomammillaria swinglei Britton & Rose, Cactaceae 4: 158. 1923Taxon for this nameMammillaria swinglei (Britton & Rose) Boed.