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A cactus (pl.: cacti, cactuses, or less commonly, cactus) [3] is a member of the plant family Cactaceae (/ k æ k ˈ t eɪ s i. iː,-ˌ aɪ /), [a] a family of the order Caryophyllales comprising about 127 genera with some 1,750 known species. [4]
Old growth saguaro. The saguaro (/ s ə ˈ (ɡ) w ɑːr oʊ / sə-(G)WAR-oh, [5] Spanish: [saˈɣwaɾo]; Carnegiea gigantea) is a tree-like cactus species in the monotypic genus Carnegiea that can grow to be over 12 meters (40 feet) tall.
Opuntia, commonly called the prickly pear cactus, is a genus of flowering plants in the cactus family Cactaceae, many known for their flavorful fruit and showy flowers. [1] Cacti are well-adapted to aridity; however, they are still vulnerable to alterations in precipitation and temperature driven by climate change. [2]
This species is a noxious invasive in Australia in old mining localities and along watercourses. It is known there by the common names of Devil's rope cactus or Devil's rope pear. [7] [8] It is a declared noxious weed in New South Wales and also occurs in Queensland, Northern Territory, Victoria, and South Australia. [7] [8] [9]
A collection of cultivated cacti. In 1984, the International Organization for Succulent Plant Study set up a working party, now called the International Cactaceae Systematics Group, to produce a consensus classification of the cactus family, down to the level of genus.
Opuntia ficus-indica, the Indian fig opuntia, fig opuntia, or prickly pear, is a species of cactus that has long been a domesticated crop plant grown in agricultural economies throughout arid and semiarid parts of the world. [3] O. ficus-indica is the most widespread and most commercially important cactus.
Pilosocereus robinii is a species of cactus known by the common name Key tree-cactus. [2] It is native to the Florida Keys in the United States. [3] It also occurs in Western Cuba and the Northern Bahamas. It has been erroneously reported from Puerto Rico, [4] the Virgin Islands, [4] and Mexico. [2]
Stenocereus thurberi, the organ pipe cactus, [3] is a species of cactus native to Mexico and the United States. The species is found in rocky desert. Two subspecies are recognized based on their distribution and height. The Organ Pipe Cactus National Monument is named for the species. Cacti are minimally adapted to particular thermal niches ...