Neomammillaria formosa (Galeotti ex Scheidw.) Britton & Rose, Cactaceae 4: 99. 1923 Neomammillaria formosa (Galeotti ex Scheidw.) Britton & Rose, Cactaceae 4: 99. 1923is new combination for Mammillaria formosa Galeotti ex Scheidw. in Bull. Acad. Roy. Sci. Bruxelles 5: 497. 1838Taxon for this nameNeomammillaria formosa (Galeotti ex Scheidw.) Britton & Rose