Gymnocalycium riojense var. pipanacoense H.Till & W.Till in Gymnocalycium 4: 50. 1991 Gymnocalycium riojense var. pipanacoense H.Till & W.Till in Gymnocalycium 4: 50. 1991Taxon for this nameGymnocalycium riojense var. pipanacoense H.Till & W.Till
