Gymnocalycium reductum (Link) Pfeiff., Abbild. Beschr. Cact. 2: pl. 12. 1846 Gymnocalycium reductum (Link) Pfeiff., Abbild. Beschr. Cact. 2: pl. 12. 1846is new combination for Cactus reductus Link, Enum. Hort. Berol. Alt. 2: 21. 1822Taxon for this nameGymnocalycium reductum (Link) Pfeiff.