Mammillaria vivipara var. arizonica (Engelm.) L.D.Benson in Proc. Calif. Acad. Sci., ser. 4, 25: 263. 1944
Mammillaria vivipara var. arizonica in Proc. Calif. Acad. Sci., ser. 4, 25: 263. 1944
is new combination for Mammillaria arizonica, Bot. California 1: 244. 1876