Escobaria villardii Castetter, P.Pierce & K.H.Schwer. in Cact. Succ. J. (Los Angeles) 47: 64. 1975
Escobaria villardii in Cact. Succ. J. (Los Angeles) 47: 64. 1975
is basionym for Escobaria sneedii subsp. villardii in Kakteen And. Sukk. 50: 278. 1999
Holotype: United States of America, New México, Otero County, Alamo Canyon, near Alamagordo, 18 Mar 1972, R. Reeves 3984 (UNM: 50789)