rose cactus, Pereskia grandifolia

Rose cactus is indeed a cactus. Those leaves are persistent. It's classification is not. Recent studies have placed this and its immediate relatives in a separate genus, Rhodocactus. That change is not reflected in some seemingly up-to-date sources, so I'm not sure what to call rose cactus at this point. It is a shrub or small tree from Brazil, now occasionally wild in FL. Matthaei Gardens, UM, 3/30/16. Cactus family, Cactaceae.