Notocactus mueller-melchersii var. veenianus (Vliet) N.Gerloff & Neduchal in Internoto 25: 112. 2004
Notocactus mueller-melchersii var. veenianus in Internoto 25: 112. 2004
is new combination for Notocactus veenianus in Succulenta (Netherlands) 53: 171. 1974