Neomammillaria melanocentra (F.A.C.Weber) Britton & Rose, Cactaceae 4: 81, f. 73. 1923 Neomammillaria melanocentra (F.A.C.Weber) Britton & Rose, Cactaceae 4: 81, f. 73. 1923is new combination for Mammillaria valida F.A.C.Weber, Dict. Hort.: 806. 1898Taxon for this nameNeomammillaria melanocentra (F.A.C.Weber) Britton & Rose