Coryphantha vivipara var. neomexicana (Engelm.) Backeb., Cactaceae 5: 2999. 1961 Coryphantha vivipara var. neomexicana (Engelm.) Backeb., Cactaceae 5: 2999. 1961is new combination for Mammillaria vivipara subvar. neomexicana Engelm. in Proc. Amer. Acad. Arts 3: 269. 1856Taxon for this nameCoryphantha vivipara var. neomexicana (Engelm.) Backeb.