Opuntia pycnantha Engelm. ex J.M. Coult. in Contr. U.S. Natl. Herb. 3: 423. 1896 sec. Hunt 2016
- =Opuntia pycnantha var. margaritana J.M. Coult. in Contr. U.S. Natl. Herb. 3: 424. 1896 syn. sec. Guzmán & al. 2003
- =Opuntia margaritana (J.M. Coult.) E.M. Baxter in Cact. Succ. J. (Los Angeles) 2: 388. 1931 syn. sec. Guzmán & al. 2003