Echinocactus denudatus Link & Otto, Icon. Pl. Rar.: 17. 1828
Echinocactus denudatus, Icon. Pl. Rar.: 17. 1828
is basionym for Gymnocalycium denudatum, Taschenb. Cactuslieb. 2: 124. 1844
is basionym for Cereus denudatus, Enum. Diagn. Cact.: 73. 1837
Lectotype (designated by Hunt, D.R. & Taylor, N. P. 2006: 81): [icon] plate 9 in Link & Otto, Icon. Pl. Rar.: 17. 1828