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