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''Arabis glabra'', or tower mustard, is a tall, slim, grey-green plant with small creamy flowers at the top of the stem. It usually grows on poor chalky or sandy soils, in open situations. It is native to Europe, Asia, and North Africa, and it is widespread in North America where it is also probably native. It can be found in many other parts of the world as an introduced species. It is classified as an endangered species in the UK and is considered to be facing a very high risk of extinction in the wild. It is listed as a Priority Species under the UK Biodiversity Action Plan. Only 35 sites are recorded by Plantlife mostly in Norfolk, (where 100 plants were found at a new site in 1999) but includes 6 sites near Kidderminster in Worcestershire. == External links == *(Plantlife International UK Site: Arabis glabra-Tower mustard accessed 24.12.07 ) *(Express and Star ''£10k project to protect rare flower'' 20 December 2007 11.33am accessed 24.12.07 ) *(USDA Plants Profile ) *(Photo gallery ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Arabis glabra」の詳細全文を読む スポンサード リンク
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