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Prickly Pears In Australia
Prickly pears (genus ''Opuntia'') include a number of plant species that were introduced and have become invasive in Australia. Prickly pears (mostly '' Opuntia stricta'') were imported into Australia in the First Fleet as hosts of cochineal insects, used in the dye industry. Many of these, especially the tiger pear, quickly became widespread invasive species, rendering of farming land unproductive. The moth '' Cactoblastis cactorum'' from Argentina, whose larvae eat prickly pear, was introduced in 1925 and almost wiped out the prickly pear. This case is often cited as an example of successful biological pest control. A monument to ''Cactoblastis cactorum'' was erected in Dalby, Queensland, commemorating the eradication of the prickly pear in the region. The Cactoblastis Memorial Hall in Boonarga, Queensland, also commemorates the eradication. Species These ''Opuntia'' species are recorded as naturalised in Australia: *'' Opuntia aurantiaca'' *'' Opuntia dejecta'' *'' O ...
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Cactoblastis Monument, Dalby, Queensland, Australia
''Cactoblastis'' is a genus of Pyralidae, snout moths. It was described by Émile Louis Ragonot in 1901 and is known from Argentina, Peru, and Brazil. Species * ''Cactoblastis bucyrus'' Dyar, 1922 * ''Cactoblastis cactorum'' (Berg, 1885) – South American cactus moth * ''Cactoblastis doddi'' Heinrich, 1939 * ''Cactoblastis mundelli'' Heinrich, 1939 * ''Cactoblastis ronnai'' (Juan Brèthes, Brèthes, 1920) References

Phycitini Pyralidae genera Taxa named by Émile Louis Ragonot {{phycitini-stub ...
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Cactoblastis Memorial Hall
Cactoblastis Memorial Hall is a heritage-listed memorial at Warrego Highway, Boonarga, Western Downs Region, Queensland, Australia. It was built in 1936 by Jack Schloss. It was added to the Queensland Heritage Register on 21 September 1993. History This timber hall was completed in 1936 at Boonarga, a small settlement approximately southeast of Chinchilla. The hall was erected as a monument to the cactoblastis moth which overcame prickly pear in Queensland and New South Wales during the late 1920s and early 1930s. The appearance of prickly pear in Queensland has been attributed to a small number of prickly pear plants brought to Queensland as garden plants. By 1862 prickly pear was growing in the Chinchilla district and spread rapidly in areas where land holdings were extensive and population relatively low. Prickly pear was declared a noxious weed in Queensland in 1893. By 1900 approximately were affected by prickly pear; an area which had extended to an estimated ...
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Opuntia Monacantha
''Opuntia monacantha'', commonly known as drooping prickly pear, cochineal prickly pear, or Barbary fig, is a species of plant in the family Cactaceae native to South America. Taxonomy The species was first formally described in 1812 by botanist Adrian Haworth in ''Synopsis Plantarum Succulentarum''. The name ''Opuntia vulgaris'', which is a synonym of ''Opuntia ficus-indica'', has been misapplied to this species in Australia. From Adrian Hardy Haworth, the species was in the genus 1819 ''Opuntia''. Many authors, including Nathaniel Lord Britton, Joseph Nelson Rose and Curt Backeberg stated that ''Opuntia monacantha'' was just another name for '' Opuntia vulgaris.'' Description Opuntia monacantha is a succulent, thorny shrub that grows almost tree-like with several branches and profusely expanded crown in branches that reaches a height of up to 5 meters. The oval to elongated shoots narrowed at the base are shiny green. They are quite thin and 4 to 10 inches long. The widely s ...
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Opuntia Microdasys
''Opuntia microdasys'' (angel's-wings, bunny ears cactus, bunny cactus or polka-dot cactus) is a species of flowering plant in the cactus family, ''Cactaceae''. It is native and endemic to central and northern Mexico. Description ''Opuntia microdasys'' forms a dense shrub 40–60 cm tall, occasionally more, composed of pad-like stems 6–15 cm long and 4–12 cm broad. Instead of spines it has numerous white or yellow glochids 2–3 mm long in dense clusters. They are barbed and thinner than the finest human hairs, detaching in large numbers upon the slightest touch. If not removed they will cause considerable skin irritation so the plants must be treated with caution. The Latin specific epithet ''microdasys'' means "small and hairy". The yellow flowers appear only rarely. Despite this, it is a very popular cactus in cultivation, partly because of the young plant's comical resemblance to a rabbit's head. It has gained the Royal Horticultural Society's Awar ...
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Opuntia Leucotricha
''Opuntia leucotricha'' is a species of cactus with the common names: arborescent pricklypear, Aaron's beard cactus, and semaphore cactus; and (in Spanish) ''duraznillo blanco'' and ''nopal blanco''. Description ''Opuntia leucotricha'' is a tree-like cactus, growing up to tall. The platyclades have a thin fuzz of white hairs on their joints. The plant is an invasive species in Florida. Distribution The plant is endemic to Mexico. The cactus occurs in mountain habitats, in the states of: San Luis Potosí, Tamaulipas, Zacatecas, Guanajuato, and Querétaro Querétaro, officially the Free and Sovereign State of Querétaro, is one of the Political divisions of Mexico, 32 federal entities of Mexico. It is divided into Municipalities of Querétaro, 18 municipalities. Its capital city is Querétaro Cit .... References leucotricha Cacti of Mexico Endemic flora of Mexico Flora of Guanajuato Flora of Querétaro Flora of San Luis Potosí Flora of Tamaulipas Flora of Zac ...
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Opuntia Humifusa
''Opuntia humifusa'', common name, commonly known as the devil's-tongue, eastern prickly pear or Indian fig, is a cactus of the genus ''Opuntia'' present in parts of the eastern United States and northeastern Mexico. Description As is the case in other ''Opuntia'' species, the green stems of this low-growing Perennial plant, perennial cactus are flattened, and are formed of segments. glochid, Barbed bristles are found around the surfaces of the segments, and longer spines are sometimes present. The flowers are yellow to gold in color, and are found along the margins of mature segments. The flowers are waxy and sometimes have red centers. They measure across. This cactus blooms in the late spring. The juicy red or purple fruits measure from . As the fruit matures, it changes color from green to red, and often remains on the cactus until the following spring. There are 6 to 33 small, flat, light-colored seeds in each fruit. Taxonomy Some botanists treat this cactus as a variety ...
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Opuntia Ficus-indica
''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 climate, arid and Semi-arid climate, semiarid parts of the world. ''O. ficus-indica'' is the most widespread and most commercially important cactus. It is grown primarily as a fruit crop, and also for the vegetable nopales and other uses. Cacti are good crops for dry areas because they efficiently convert water into biomass. ''O. ficus-indica'' is the most widespread of the long-domesticated cactuses. ''Opuntia'' species hybrid (biology), hybridize easily, but the wild origin of ''O. ficus-indica'' is likely to have been in central Mexico, where its closest genetic relatives are found. Names Most culinary references to the "prickly pear" refer to this species. The Spanish name ''tuna'' is also used for the fruit of this cactus and for ''Opuntia'' in general; according to Alexander von H ...
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Opuntia Engelmannii
''Opuntia engelmannii'' is a prickly pear common across the south-central and Southwestern United States and northern Mexico. It goes by a variety of common names, including desert prickly pear, discus prickly pear, Engelmann's prickly pear in the US, and nopal, abrojo, joconostle, and vela de coyote in Mexico. The nomenclatural history of this species is somewhat complicated due to the varieties, as well as its habit of hybridizing with '' Opuntia phaeacantha''. It differs from '' Opuntia phaeacantha'' by being green year round instead of turning reddish purple during winter or dry seasons, as well as having yellow flowers with red centers. Varieties *''Opuntia engelmannii'' var. ''cuija'' — nopal cuijo; endemic to Mexico, in Guanajuato, Hidalgo, San Luis Potosí. *''Opuntia engelmannii'' var. ''engelmannii'' — Engelmann's prickly pear; Mexico, southwestern U.S., California *''Opuntia engelmannii'' var. ''flavispina'' — yellow-spined prickly pear; Arizona, Mexico *''O ...
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Opuntia Elatior
''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. Cacti are native to the Americas, and are well adapted to arid climates; however, they are still vulnerable to alterations in precipitation and temperature driven by climate change. The plant has been introduced to parts of Australia, southern Europe, the Middle East, and northern Africa. ''Prickly pear'' alone is more commonly used to refer exclusively to the fruit, but may also be used for the plant itself; in addition, other names given to the plant and its specific parts include ''tuna'' (fruit), ''sabra'', ''sabbar'', ''nopal'' (pads, plural ''nopales'') from the Nahuatl word , nostle (fruit) from the Nahuatl word , and paddle cactus. The genus is named for the Ancient Greek city of Opus. The fruit and leaves are edible. The most common culinary species is the "Barbary fig" (''Opuntia ficus-indica''). ...
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Opuntia Elata
''Opuntia elata'' is a species of cactus found in Bolivia, Paraguay, southern Brazil, northern Argentina, and Uruguay. Description ''Opuntia elata'' is a fast growing Opuntia with a tendency to branch out. It can reach up to 1-1.5 m in height and spread (occasionally 3 m). The joints may grow straight, white spines up to 3-4 cm long. The flower is orange to yellow in color, appearing around late spring up to summer. The fruit is club shaped and purple-red when ripe. N. L. Britton, J. N. Rose: ''“The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family.”'' Vol I, The Carnegie Institution of Washington, Washington 1919 Varieties , Plants of the World Online accepted three varieties: *''Opuntia elata'' var. ''delaetiana'' F.A.C.Weber *''Opuntia elata'' var. ''elata'' – synonym '' Opuntia anacantha'' *''Opuntia elata'' var. ''obovata'' E.Walther Distribution and habitat The plant can be found at Chuquisaca, Cochabamba, Santa Cruz, Tarija of Bolivi ...
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Opuntia Dillenii
''Opuntia dillenii'' is a species of prickly pear native to the tropical and subtropical Americas The Americas, sometimes collectively called America, are a landmass comprising the totality of North America and South America.''Webster's New World College Dictionary'', 2010 by Wiley Publishing, Inc., Cleveland, Ohio. When viewed as a sing .... It is naturalized in many other parts of the world. It differs from '' O. stricta'' by having more spines per arose (usually more than 3). References dillenii {{Cactus-stub ...
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Opuntia Dejecta
''Opuntia dejecta'' is a species of plant in the cactus family. They are listed in cites appendix ii. Flowers are visited by the broad-billed hummingbird The broad-billed hummingbird (''Cynanthus latirostris'') is a small-sized hummingbird that resides in Mexico and the southwestern United States. Males and females have different features (see sexual dimorphism). The juveniles resemble the female .... Source References {{Taxonbar, from1=Q2027580, from2=Q15340662 dejecta ...
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