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Brassica elongata
''Brassica elongata'', the elongated mustard, is a species of the mustard plant that is native to parts of Central Europe, Eastern Europe, the Balkan Peninsula, the Caucasus, Morocco and parts of Central Asia. Through plant invasion this species has become naturalized in many other parts of the world. Some of these naturalized regions include South Africa, North Western Europe, Australia and North America.〔http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?7645#common〕 Given the wide range of climate and ecological conditions of these regions, ''B. elongata'' has been able to disrupt the ecosystems of their native plant habitats and has been label as an invasive species in many of its naturalized zones. In North America, this species is often found as a roadside weed in the southwestern states, particularly in the state of Nevada. Studies allude that the Cruciferae might have migrated through the Bering land bridge from what is now Central Asia.〔 Commonly known as the long-stalked rape or as ''ドイツ語:langtraubiger Kohl'' in German, this species is a close cousin to ''Brassica napus'' (rapeseed) and a secondary genetic relative to ''B. oleracea'' (kale).〔 As a close genetic species of the rapeseed, the long-stalked rape has one of the highest counts of accumulated polyunsaturated linoleic and linolenic acid. Both compounds are heavily used to manufacture vegetable oils. ''Brassica elongata'' has the propagative potential of turning into a horticultural product from what is currently a noxious weed.〔〔
==Distribution==
''Brassica elongata'' is a native species that spreads from Eastern European countries starting from Austria to the Asian-Temperate that extends to Afghanistan and Iran. There are also areas in Northern Africa near Morocco with similar arid climates that have ''B. elongata'' as a native species.〔 As an invasive species, ''B. elongata'' has spread north up to Norway, southwest into parts of France and Italy, and has even been introduced in large areas of Southern Africa, Southern Australia, and Southwest America.〔http://plants.usda.gov/java/profile?symbol=BREL2〕 ''B. elongata'' was first collected in the United States at Linnton, Oregon by Wilhelm Suksdorf in 1911. The collection occurred near a surrounding ballast where ships were often unloaded but its specific subspecies of ''B. elongata'' was unknown. The next recording had occurred in Bingen, Washington in 1915. Thereafter in 1968, with no apparent evidence of the species spreading, ''Brassica elongata'' subsp. ''integrifolia'' was discovered by John Thomas Howell, an American botanist, while driving on the roadsides of US Highway 50 in the east-central regions of Nevada.〔 Since then ''B. elongata'' has become an identifiable common sight of the regional flora of the desert regions of Eureka and White Pine counties.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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