Sulcorebutia markusii Rausch in Kakteen And. Sukk. 21(6): 103–104. 1970
Sulcorebutia markusii in Kakteen And. Sukk. 21(6): 103–104. 1970
is basionym for Sulcorebutia steinbachii var. markusii in Cactus & Co. 8(3): 189. 2004
is basionym for Weingartia markusii in Frankfurter Kakteenf. 5(2): 18. 1978
is basionym for Sulcorebutia steinbachii subsp. markusii in Cactus & Co. 8(3): 189. 2004
is basionym for Weingartia steinbachii subsp. markusii in Echinopseen 6: 16. 2009