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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 Ambrosia confertiflora ： ウィキペディア英語版 Ambrosia confertiflora ''Ambrosia confertiflora'' is a North American species of ragweed known by the common name weakleaf bur ragweed.〔(Calflora taxon report, University of California, ''Ambrosia confertiflora'' DC. weak leaved burweed, weakleaf burr ragweed )〕 ''Ambrosia confertiflora'' is native to much of northern Mexico (from Sonora to Tamaulipas) and the southwestern United States from California east as far as Kansas, Oklahoma, and central Texas.〔(Biota of North America Program 2014 county distribution map )〕 It is also naturalized in various other regions and has been declared a noxious weed in Australia.〔(State of Victoria, Victorian Resources Online, Map of Potential Distribution of Burr ragweed (Ambrosia confertiflora) in Victoria )〕〔(Atlas of Living Australia, ''Ambrosia confertiflora'' DC. Burr Ragweed )〕〔(Southern Tablelands and South Coast Noxious Plants Committee (New South Wales), burr ragweed )〕 ''Ambrosia confertiflora''is a perennial herb reaching heights between 30 centimeters and nearly two meters with bristly, fuzzy green to brown erect stems. The multilobed fuzzy leaves have blades which can be nearly 16 centimeters long and are borne on petioles with lobed, winglike appendages. As in other ragweeds, the inflorescence has staminate (male) and pistillate (female) flower heads. The pistillate heads yield one or two fruits which are burrs up to half a centimeter long and covered in short spines.〔(Jepson Manual Treatment )〕〔(Flora of North America Vol. 21 Page 18 ''Ambrosia confertiflora'' de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 526. 1836. )〕 ==References== 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「Ambrosia confertiflora」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.