Neomammillaria petrophila (K.Brandegee) Britton & Rose, Cactaceae 4: 73. 1923 Neomammillaria petrophila (K.Brandegee) Britton & Rose, Cactaceae 4: 73. 1923is new combination for Mammillaria petrophila K.Brandegee in Zoƫ 5(10): 193. 1905Taxon for this nameNeomammillaria petrophila (K.Brandegee) Britton & Rose