Gymnocalycium reductum (Link) Pfeiff. ex Mittler, Taschenb. Cactuslieb. 2: 124. 1844
Gymnocalycium reductum, Taschenb. Cactuslieb. 2: 124. 1844
is new combination for Cactus reductus, Enum. Hort. Berol. Alt. 2: 21. 1822
Gymnocalycium reductum, Taschenb. Cactuslieb. 2: 124. 1844