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''Acer campestre'', common name field maple, is a maple native to England and much of Europe, north to southern Scotland (where it is the only native maple), Denmark, Poland and Belarus, and also southwest Asia from Turkey to the Caucasus, and north Africa in the Atlas Mountains.〔(【引用サイトリンク】title=''Acer campestre'' )〕〔Euro+Med Plantbase Project: (''Acer campestre'' )〕〔Flora of NW Europe: (''Acer campestre'' )〕〔Rushforth, K. (1999). ''Trees of Britain and Europe''. Collins ISBN 0-00-220013-9.〕〔Mitchell, A. F. (1974). ''A Field Guide to the Trees of Britain and Northern Europe''. Collins ISBN 0-00-212035-6〕〔Den virtuella floran: (''Acer campestre'' distribution map )〕〔Nagy, L. & Ducci, F. (2004). ''EUFORGEN'' Technical guidelines for genetic conservation and use. Field maple ''Acer campestre''. International Plant Genetic Resources Institute. Rome, Italy. Available (online ) (pdf file).〕 In North America it is known as hedge maple〔(【引用サイトリンク】title=''Acer campestre'' )〕〔(【引用サイトリンク】title=''Acer campestre'' )〕 and in Australia, it is sometimes called common maple.〔Department of Agriculture, Western Australia: (Pests and Diseases Image Library )〕 ==Description== It is a deciduous tree reaching tall, with a trunk up to in diameter, with finely fissured, often somewhat corky bark. The shoots are brown, with dark brown winter buds. The leaves are in opposite pairs, long (including the petiole) and broad, with five blunt, rounded lobes with a smooth margin. Usually monoecious, the flowers are produced in spring at the same time as the leaves open, yellow-green, in erect clusters across, and are insect-pollinated. The fruit is a samara with two winged achenes aligned at 180°, each achene is wide, flat, with a wing.〔〔 The two varieties, not accepted as distinct by all authorities, are:〔〔 *''A. campestre'' var. ''campestre'' - downy fruit *''A. campestre'' var. ''leiocarpum'' (Opiz) Wallr. (syn. ''A. campestre'' subsp. ''leiocarpum'') - hairless fruit The closely related ''Acer miyabei'' replaces it in eastern Asia.〔 Image:Acer-campestre-flowers.JPG|Field maple flowers Image:Field maple.JPG|Field maple in autumn, France Image:Acer campestre 006.jpg|Field maple, Germany Image:FeldahornBlatt.jpg|Leaves and inflorescence Image:Acer-campestre.JPG|Leaves and fruits Acer campestre (4).JPG|Trunk 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「Acer campestre」の詳細全文を読む スポンサード リンク
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