Pereskiopsis aquosa (F.A.C.Weber) Britton & Rose in Smithsonian Misc. Collect. 50: 331. 1907 sec. Hunt 2006
- ≡Opuntia aquosa F.A.C.Weber in Bull. Mus. Hist. Nat. (Paris) 4: 165. 1898 syn. sec. Hunt 2006
- ≡Grusonia aquosa (F.A.C.Weber) G.D.Rowley in Tephrocactus Study Group 12(3): 42. 2006 syn. sec. Kew WCVP (2019)