''Cylindropuntia'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of cacti (

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Cactaceae A cactus (, or less commonly, cactus) is a member of the plant family Cactaceae, a family comprising about 127 genera with some 1750 known species of the order Caryophyllales. The word ''cactus'' derives, through Latin, from the Ancient Gree ...

), containing species commonly known as chollas, native to northern Mexico and the

Southwestern United States The Southwestern United States, also known as the American Southwest or simply the Southwest, is a geographic and cultural region of the United States that generally includes Arizona, New Mexico, and adjacent portions of California, Colorado, Ne ...

. They are known for their barbed spines that tenaciously attach to skin, fur, and clothing. Stands of cholla are called cholla gardens. Individuals within these colonies often exhibit the same DNA, as they were formerly

tubercles In anatomy, a tubercle (literally 'small tuber', Latin for 'lump') is any round nodule, small eminence, or warty outgrowth found on external or internal organs of a plant or an animal. In plants A tubercle is generally a wart-like projection ...

of an original plant.

Taxonomy

''Cylindropuntia'' was formerly treated as a

subgenus In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between t ...

of '' Opuntia'', but have now been separated based on their cylindrical stems (''Opuntia'' species have flattened stems) and the presence of papery epidermal sheaths on the spines (''Opuntia'' has no sheaths). A few species of mat- or clump-forming opuntioid cacti are currently placed in the genus ''

Grusonia ''Grusonia'' is a genus of opuntioid cacti (family Cactaceae), originating from the North American Deserts in Southwest United States and northern Mexico, including Baja California. Authors differ on precise boundaries of the genus, which has b ...

''. Collectively, opuntias, chollas, and related plants are sometimes called opuntiads. The roughly 35 species of ''Cylindropuntia'' are native to the southwestern and south-central United States, Mexico, and the West Indies. ''The Flora of North America'' recognizes 22 species.Flora of North America Editorial Committee, eds. 1993+. ''Flora of North America North of Mexico''. 16+ vols. New York and Oxford. Some species have been introduced to South America (Chile, Ecuador, Peru) and South Africa.

Species

, Plants of the World Online accepts the following species:

Hybrids

Cholla wood in pet trade

Dried, dead ''Cylindropuntia'' sections are called "cholla wood" and are popular in the pet trade. In

aquarium An aquarium (plural: ''aquariums'' or ''aquaria'') is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aq ...

s they are immersed partly or entirely into the water for pets to swim through, and in

terrarium A terrarium (plural: terraria or terrariums) is usually a sealable glass container containing soil and plants that can be opened for maintenance to access the plants inside; however, terraria can also be open to the atmosphere. Terraria are ofte ...

s and other terrestrial pet enclosures they are placed and propped up for climbing.

Notes

References

External links

USDA Plants Profile for ''Cylindropuntia'' (cholla)

Flora of North America: Key for ''Cylindropuntia''
{{Taxonbar, from=Q137197 Cacti of Mexico Cacti of the United States North American desert flora Opuntioideae genera Taxa named by George Engelmann