Neomammillaria longimamma (DC.) Fosberg in Bull. S. Calif. Acad. Sci. 30: 58. 1931 Neomammillaria longimamma (DC.) Fosberg in Bull. S. Calif. Acad. Sci. 30: 58. 1931is new combination for Mammillaria longimamma DC., Rev. Cact.: 113. 1829Taxon for this nameNeomammillaria longimamma (DC.) Fosberg