Rebutia steinbachii subsp. tiraquensis (Cárdenas) D.R.Hunt in Cactaceae Consensus Init. 3: 6. 1997
Rebutia steinbachii subsp. tiraquensis in Cactaceae Consensus Init. 3: 6. 1997
is new combination for Rebutia tiraquensis in Cactus (Paris) 57: 257. 1957