Sulcorebutia steinbachii var. australis Rausch in Succulenta (Netherlands) 65(11): 240. 1986
Sulcorebutia steinbachii var. australis in Succulenta (Netherlands) 65(11): 240. 1986
is basionym for Sulcorebutia tiraquensis var. australis in Cactus & Co. 11(3): 158. 2007
is basionym for Weingartia tiraquensis var. australis in Echinopseen 6: 20. 2009