Sulcorebutia steinbachii subvar. longiseta (Cárdenas) Gertel in Informationsbrief Zentr. Arbeitsgem. "Echinopseen" 22
Sulcorebutia steinbachii subvar. longiseta in Informationsbrief Zentr. Arbeitsgem. "Echinopseen" 22: 26. 1996
is new combination for Rebutia tiraquensis var. longiseta in Cact. Succ. J. (Los Angeles) 42(4): 188. 1970