Harrisia aboriginum (commonly known as the west-coast prickly apple, prickly applecactus, yellow prickly apple, and aboriginal prickly apple) is a species of columnar cactus endemic to peninsular Florida, on the Gulf Coast of the counties of Lee, Sarasota County, and Charlotte. Only 12 occurrences are known, and the species is threatened by horticultural collection, shading from fire suppression, competition from invasive flora, and most of all habitat destruction. It is a federally listed endangered species of the United States.

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