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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.
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.
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]
Pilosocereus millspaughii, commonly called the Key Largo tree cactus, [citation needed] is a species of flowering plant in the family Cactaceae, native to Florida, The Bahamas, Cuba, Haiti, and the Turks and Caicos Islands. [1] It was first described by Nathaniel Lord Britton in 1909 as Cephalocereus millspaughii. [2]
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]
Trichocereus macrogonus var. pachanoi (synonyms including Trichocereus pachanoi and Echinopsis pachanoi) is a fast-growing columnar cactus found in the Andes at 2,000–3,000 m (6,600–9,800 ft) in altitude. [3] [4] It is one of a number of kinds of cacti known as San Pedro cactus.
Cereus (/ ˈ s ɪər i ə s / "serious") [2] is a genus of cacti (family Cactaceae) including around 33 species of large columnar cacti from South America.The name is derived from Greek (κηρός) and Latin words meaning "wax", "torch" or "candle".