Wall. ex DC. 1824
Acer oblongum is a medium-sized evergreen to semi-deciduous tree reaching a height of approximately 15–22 metres (49–72 ft). Unique among maples, this plant stays green all winter. The trunks are buttressed, with a smooth to wrinkled bark. Leaves are opposite, ovate-lanceolate with entire margin, with a petiole 5-12 cm long, with glaucous-green underside and dark green upperside. The young shoots are reddish bronze and finely hairy. The flowers are hermaphroditic, small and inconspicuous, about 4 mm, greenish white, gathered in hairy racemes. The fruits are represented by the typical two-winged samaras, about 2.5 cm long, wind dispersed. It has been introduced for its wood and it is sometimes cultivated in large gardens for its evergreen foliage.
Acer oblongum is widespread across central, eastern, and southeastern Asia, from Tibet and northern Pakistan east as far as Japan, including southern China, northern India, and northern Indochina.
Acer oblongum prefers humid climate of the Himalayan forests, especially along streams, at an elevation of about 600–2,000 metres (2,000–6,600 ft) above sea level.
- The Plant List, Acer oblongum Wall. ex DC.
- Philips, Roger (1979). Trees of North America and Europe. New York: Random House, Inc. ISBN 0-394-50259-0.
- Flora of China, Acer oblongum Wallich ex Candolle, 1824. 飞蛾树 fei e shu
- Notes from the Royal Botanic Garden, Edinburgh. Edinburgh and Glasgow 8:329. 1915
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