Neomammillaria meiacantha (Engelm.) Britton & Rose, Cactaceae 4: 84. 1923 Neomammillaria meiacantha (Engelm.) Britton & Rose, Cactaceae 4: 84. 1923is new combination for Mammillaria meiacantha Engelm. in Proc. Amer. Acad. Arts 3: 263. 1856Taxon for this nameNeomammillaria meiacantha (Engelm.) Britton & Rose