Parodia mueller-melchersii subsp. winkleri (Vliet) Hofacker in Cactaceae Consensus Init. 6: 11. 1998
Parodia mueller-melchersii subsp. winkleri in Cactaceae Consensus Init. 6: 11. 1998
is new combination for Notocactus winkleri in Succulenta (Netherlands) 54: 136. 1975