Gymnocalycium amoenum (H.Till) J.G.Lamb. in Succulenta (Netherlands) 81: 230. 2002 Gymnocalycium amoenum (H.Till) J.G.Lamb. in Succulenta (Netherlands) 81: 230. 2002is new combination for Gymnocalycium parvulum var. amoenum H.Till in Gymnocalycium 7: 125. 1994Taxon for this nameGymnocalycium amoenum (H.Till) J.G.Lamb.