Cactus intortus Mill., Gard. Dict., ed. 8: Cereus no. 2. 1768
Cactus intortus, Gard. Dict., ed. 8: Cereus no. 2. 1768
is basionym for Melocactus intortus, Repert. Spec. Nov. Regni Veg. 16: 35. 1919
is basionym for Echinocactus intortus, Prodr. 3: 462. 1828
Neotype (designated by Taylor, N. P. 1991: 781): Antigua, Howard 18492 (K: K000251492, isoneotype: NY barcode 1496389)