Mammillaria gummifera var. macdougalii (Rose) L.D.Benson, Cacti Ariz., ed. 3: 22. 1969
Mammillaria gummifera var. macdougalii, Cacti Ariz., ed. 3: 22. 1969
is new combination for Mammillaria macdougalii, Stand. Cycl. Hort. 4: 1982. 1916
Mammillaria gummifera var. macdougalii, Cacti Ariz., ed. 3: 22. 1969
Taxon for this name