Brown-spined Prickly Pear, Mojave Prickly Pear, Tulip Pricklypear
Opuntia phaeacantha
Synonyms: Opuntia littoralis var. piercei, Opuntia phaeacantha var. major, Opuntia mojavensis
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Brown-spined prickly pear observed in Plum Canyon, Anza-Borrego Desert State Park, CA......March 28, 2006.
Paul Slichter