Opuntia echinocarpa var. nuda J.M.Coult. in Contr. U.S. Natl. Herb. 3(7): 446–447. 1896 Opuntia echinocarpa var. nuda J.M.Coult. in Contr. U.S. Natl. Herb. 3(7): 446–447. 1896Taxon for this nameOpuntia echinocarpa var. nuda J.M.Coult.
