Opuntia polyacantha Haw., Syn. Pl. Succ.: 82. 1819 sec. Hunt 2016
- =Opuntia missouriensis DC., Prodr. 3: 472. 1828 syn. sec. Guzmán & al. 2003
- =Opuntia erinacea Engelm. & Bigelow in Proc. Amer. Acad. Arts 3: 301. 1856 syn. sec. Guzmán & al. 2003
- =Opuntia hystricina Engelm. & Bigelow in Proc. Amer. Acad. Arts 3: 299. 1856 syn. sec. Guzmán & al. 2003
- =Opuntia missouriensis var. rufispina Engelm. & Bigelow in Proc. Amer. Acad. Arts 3: 44. 1856 syn. sec. Guzmán & al. 2003
- =Opuntia missouriensis var. trichophora Engelm. & Bigelow in Proc. Amer. Acad. Arts 3: 44. 1856 syn. sec. Guzmán & al. 2003
- =Opuntia polyacantha var. trichophora (Engelm. & Bigelow) J.M. Coult. in Contr. U.S. Natl. Herb. 3: 437. 1896 syn. sec. Guzmán & al. 2003
- =Opuntia ursina F.A.C. Weber, Dict. horticult. 2: 896. 1898 syn. sec. Guzmán & al. 2003
- =Opuntia trichophora (Engelm. & Bigelow) Britton & Rose in Smithsonian Misc. Collect. 50: 535. 1908 syn. sec. Guzmán & al. 2003
- =Opuntia erinacea var. ursina (F.A.C. Weber) Parish, Fl. Calif. 2: 542. 1936 syn. sec. Guzmán & al. 2003
- =Opuntia erinacea var. hystricina (Engelm. & Bigelow) L.D. Benson in Proc. Calif. Acad. Sci., ser. 4, 25: 249. 1944 syn. sec. Guzmán & al. 2003
- =Opuntia hystricina var. ursina (F.A.C. Weber) Backeb., Cactaceae (Backeberg) 1: 610. 1958 syn. sec. Guzmán & al. 2003
- =Opuntia polyacantha var. rufispina (Engelm. & Bigelow) L.D. Benson, Cacti Ariz., ed. 3: 20. 1969 syn. sec. Guzmán & al. 2003
- =Opuntia polyacantha var. erinacea (Engelm. & Bigelow) B.D. Parfitt in Cact. Succ. J. (Los Angeles) 70: 188. 1998 syn. sec. Guzmán & al. 2003
- =Opuntia polyacantha var. hystricina (Engelm. & Bigelow) B.D. Parfitt in Cact. Succ. J. (Los Angeles) 70: 188. 1998 syn. sec. Guzmán & al. 2003
- =Opuntia polyacantha subsp. erinacea (Engelm. & Bigelow) Guiggi in Cactology 3(Suppl. 2): 4. 2012 syn. sec. Guiggi 2012