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Ulmus americana 'Nigricans' : ウィキペディア英語版 | Ulmus americana 'Nigricans'
The American Elm cultivar ''Ulmus americana'' 'Nigricans' was cloned from a selection made from seedlings raised by the Zöschener Baumschule, Germany, at the end of the 19th century. ==Description== The tree was distinguished by its very dark green foliage. Occasionally listed as 'Nigrescens', it has caused confusion with a ''U. minor'' cultivar of that name.〔Green, P. S. (1964). Registration of cultivar names in Ulmus. ''Arnoldia'', Vol. 24. Arnold Arboretum, Harvard University. ()〕
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 'Nigricans'」の詳細全文を読む
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