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''Ulmus lamellosa'', commonly called the Hebei Elm, is a small deciduous tree native to four Chinese provinces, Hebei, Henan, Nei Mongol, and Shanxi, to the west and south of Beijing.〔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. ()〕〔Bi R-c, Yin W-b, Wang Y-n (2003) Study on a niche of population of Ulmus lamellosa in the south area of Shanxi province. ''Xibei Zhiwu Xuebao'' 23, pp. 1266-1271.〕 ==Description== A slow growing tree rarely exceeding 10 m in height, ''U. lamellosa'' is often multi-stemmed, its upright branches forming a rounded crown, but occasionally forms a single, slender trunk < 20 cm d.b.h. Considered closely related to the Large-fruited Elm ''U. macrocarpa'', it is distinguishable from that species by its mottled, flaking bark and smaller leaves. The leaves, on 3 mm - 8 mm petioles, are obovate, < 10 cm long by 5.5 cm wide, caudate at the apex, with simply to doubly serrate margins, and densely pubescent when young; the leaves turn a rich gold in autumn. The perfect wind-pollinated apetalous flowers are produced on second-year shoots in March–April; the large < 35 mm diameter samarae appear from April to May. Image: Ulmus lamellosa (botanische tuin kerkrade) leaf.jpg Image: Ulmus lamellosa (botanische tuin kerkrade) bark.jpg 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 lamellosa」の詳細全文を読む スポンサード リンク
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