Cylindropuntia
See text Cylindropuntia is a genus of cacti (family Cactaceae), containing species commonly known as chollas (/ˈtʃɔɪəz/), native to northern Mexico and the Southwestern United States.[1] A few species of mat- or clump-forming opuntioid cacti are currently placed in the genus Grusonia.[2] The roughly 35 species of Cylindropuntia are native to the southwestern and south-central United States, Mexico, and the West Indies.[3] As of July 2019[update], Plants of the World Online accepts the following species:[4] Some hybrids are also known:[4]Dried, dead Cylindropuntia sections are called "cholla wood" and are popular in the pet trade.