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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Camassia howellii ： ウィキペディア英語版 Camassia howellii ''Camassia howellii'', commonly known as Howell's Camas, is a species of perennials endemic to western Oregon. 〔( Integrated Taxonomic Information System-ITIS Standard Report Page: ''Camassia howellii'' )〕 Discovered in 1889, ''Camassia howellii'' is now considered to be imperiled due to residential development, mining and grazing.〔NatureServe. 2014. NatureServe Explorer: An online encyclopedia of life (application ). Version 7.1. NatureServe, Arlington, Virginia. Available http://explorer.natureserve.org. (Accessed: May 3, 2014 )〕 ==Distribution== '' Camassia howellii'' is found exclusively in the southwestern region of Oregon. The 12 populations make up a total of 3000 plants. These sites are threatened by human developments. This species is currently under the global conservation status rank G2 Imperiled.〔Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.〕 Although other species of ''Camassia'' are still abundant in the Northwest, this one is not in Oregon. ''Camassia howellii'' thrives in wet meadows in serpentine soil. They are found in eastern Oregon where precipitation levels range from 70 to 100 inches per year and temperatures from 40 to 80 degrees Fahrenheit per year. These perennials are late bloomers usually during the month of May and the flowers will wither in the autumn.〔Knight, Linda. Seevers, Joan. 1992. “Special Status Plants of the Medford District BLM”. Bureau of Land Management, Medford OR. http://soda.sou.edu/Data/Library1/021106c1.pdf〕 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「Camassia howellii」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.