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Ulmus americana 'Washington' : ウィキペディア英語版 | Ulmus americana 'Washington'
The American Elm cultivar ''Ulmus americana'' 'Washington' is a tree of unknown derivation introduced by the U. S. National Park Service. ==Description== The tree has been described as possibly having triploid chromosome levels (unusual for an American Elm), suggesting it may be a hybrid between the tetraploid and rarer diploid forms of American Elm, like the cultivar 'Jefferson'.
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「Ulmus americana 'Washington'」の詳細全文を読む
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