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Populus heterophylla : ウィキペディア英語版 | Populus heterophylla
''Populus heterophylla'', also known as downy poplar, swamp poplar〔 and swamp cottonwood, is a large deciduous poplar belonging to ''Populus'' section ''Leucoides''. It is found in wet bottomland forests,〔() -Swamp cottonwood; Retrieved 2011-07-23〕 reaching a height of at full maturity and in 20 years.〔(Gardenguide ) -Retrieved 2011-07-23〕 The swamp cottonwood is similar to the eastern cottonwood except the leaves are cordate (heart-shaped) instead of deltoid. This species is indigenous to warm, temperate regions in North America, although nowhere is it considered abundant. Swamp cottonwood can be found along the eastern seaboard of the United States from Connecticut and southeastern New York to Georgia and northwestern Florida, west to Louisiana. It also grows north in the Mississippi Valley to southeastern Missouri, western Tennessee, Kentucky, southern Illinois, Indiana, Ohio, and southern Michigan. A separated population was discovered on a flat clay plain near Lake St. Clair in extreme south western Ontario, Canada in November 2002. == 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「Populus heterophylla」の詳細全文を読む
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