Ariocarpus disciformis (DC.) W.T.Marshall in Cact. Succ. J. (Los Angeles) 18: 56. 1946
Ariocarpus disciformis in Cact. Succ. J. (Los Angeles) 18: 56. 1946
is new combination for Mammillaria disciformis in Mém. Mus. Hist. Nat. 17: 114. 1828
Ariocarpus disciformis in Cact. Succ. J. (Los Angeles) 18: 56. 1946