Neomammillaria discolor (Haw.) Britton & Rose, Cactaceae 4: 132–133, f. 144. 1923 Neomammillaria discolor (Haw.) Britton & Rose, Cactaceae 4: 132–133, f. 144. 1923is new combination for Mammillaria discolor Haw., Syn. Pl. Succ.: 177. 1812Taxon for this nameNeomammillaria discolor (Haw.) Britton & Rose