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Ulmus bergmanniana
''Ulmus bergmanniana'', commonly known as Bergmann's elm, is a deciduous tree found across much of China in forests at elevations of 1500–3000 m.
==Description==
The tree is very closely related to the wych elm ''Ulmus glabra''; it can reach a height of with a wide-spreading crown, and a trunk of about 0.9 m d.b.h.〔Fu, L., Xin, Y. & Whittemore, A. (2002). Ulmaceae, in Wu, Z. & Raven, P. (eds) ''Flora of China'', Vol. 5 (Ulmaceae through Basellaceae). Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, USA. ISBN 1930723407 ()〕 The bark is longitudinally fissured, and varies in colour from greyish-white to dark grey. The pubescent leaves range from obovate to elliptic, less than long, and bluish-green in colour.〔()〕 〔White, J. & More, D. (2003). ''Trees of Britain & Northern Europe''. Cassell's, London. ISBN 0304361925〕 The perfect, wind-pollinated apetalous flowers are produced on second-year shoots in February, followed by generally orbicular samarae less than 16 mm in diameter. Branchlets do not possess the corky wings characteristic of many other elm species.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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