Gymnocalycium denudatum (Link & Otto) Pfeiff. ex Mittler, Taschenb. Cactuslieb. 2: 124. 1844
Gymnocalycium denudatum, Taschenb. Cactuslieb. 2: 124. 1844
is new combination for Echinocactus denudatus, Icon. Pl. Rar.: 17. 1828
Gymnocalycium denudatum, Taschenb. Cactuslieb. 2: 124. 1844