Opuntia fragilis (Nutt.) Haw., Syn. Pl. Succ.: 82. 1819 sec. Hunt & al. 2006
- ≡Cactus fragilis Nutt., Gen. N. Amer. Pl. 1: 296. 1818 syn. sec. Guzmán & al. 2003
- =Opuntia brachyarthra Engelm. & Bigelow in Proc. Amer. Acad. Arts 3: 302. 1856 syn. sec. Guzmán & al. 2003
- =Opuntia fragilis var. brachyarthra (Engelm. & Bigelow) J.M. Coult. in Contr. U.S. Natl. Herb. 3: 440. 1896 syn. sec. Guzmán & al. 2003