Gymnocalycium parvulum var. amoenum H.Till in Gymnocalycium 7: 125. 1994
Gymnocalycium parvulum var. amoenum in Gymnocalycium 7: 125. 1994
is basionym for Gymnocalycium parvulum subsp. amoenum in Gymnocalycium 21: 766. 2008
is basionym for Gymnocalycium amoenum in Succulenta (Netherlands) 81: 230. 2002