Sulcorebutia steinbachii (Werderm.) Backeb., Cact. Succ. J. Gr. Brit. 13: 103. 1951
Sulcorebutia steinbachii, Cact. Succ. J. Gr. Brit. 13: 103. 1951
is new combination for Rebutia steinbachii in Notizbl. Bot. Gart. Berlin-Dahlem 11: 268. 1931
Sulcorebutia steinbachii, Cact. Succ. J. Gr. Brit. 13: 103. 1951