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Dipterocarpus alatus

Authority Roxb. Family Magnoliopsida:Dilleniidae:Malvales:Dipterocarpaceae Synonyms Common names gurjum tree Editor Ecocrop code 5498

Notes
BRIEF DESCRIPTION A medium-sized to tall evergreen tree reaching a height of up to 45-55 m and a girth of 4-5 m. The bole is often straight, cylindrical and about 20-30 m tall. USES The timber is used for medium to heavy constructions but it is not very durable in contact with the ground. When treated with a preservative the timber can also be used outdoors. Because of its resinous nature it is less suitable for flooring and woodwork exposed to the sun, or to be painted. It is used for veneer, plywwod, paper pulp and charcoal. An oleo-resin can be extracted and used as a coat for waterproofing paper, as a varnish for boats, walls and furniture. The oleo-resin and also the bark of the tree have medicinal properties. GROWING PERIOD Perennial. COMMON NAMES Hairy-leafed apitong, Dulia garjan, Gurjan, Apinau, Ayamban, Chhe: ti:el bangku:ey, Chhe: ti:el ba:y, Chhe: ti:el tuk, Nha:ng, Nha:ng kha:w, Yang-na. FURTHER INF Scientific synonym: D. philippinensis. Gurjan can be found in Bangladesh, Myanmar and on the Andamans Islands at elevations between sea level and 450 m. It is typically found on alluvial soils along the banks of large fresh water streams, along the bottom of ridges, in valleys and in moist and swampy areas. The tree can in the early stages persist under heavy shade for several years. It is sensitive to fire and high winds. Yields may be 30-60 m3/ha/year.
Sources
SOURCES (D. alatus Roxb. ex G. Don) Joshi H 1980 pp 335-243 [TEMP, RAIN, TEXT, PH, DEP, FER, LIMITS, USE] Voortman R 1994 (pers. comm.) Zabala N 1990 pp 35-37 [TEMP, RAIN, TEXT, DRA, FER, LIG, USE] Soerianegara I 1993 pp 166-173 [USE, TEXT]