Rebutia einsteinii f. karreri (Backeb.) Buining & Donald in Cact. Succ. J. Gr. Brit. 27: 39. 1965
Rebutia einsteinii f. karreri in Cact. Succ. J. Gr. Brit. 27: 39. 1965
is new combination for Mediolobivia schmiedcheniana var. karreri, Descr. Cact. Nov. 1: 30. 1957 ["1956"]