Notocactus mueller-melchersii subsp. winkleri (Vliet) Lodé in Cact.-Avent. Int. 98(Suppl.): 8. 2013
Notocactus mueller-melchersii subsp. winkleri in Cact.-Avent. Int. 98(Suppl.): 8. 2013
is new combination for Notocactus winkleri in Succulenta (Netherlands) 54: 136. 1975