Dipterocarpus indicus  Bedd., Dipterocarpus laevis Buch.- Ham.
Family: Dipterocarpaceae

Bengali/vernacular name: Teli-garjan, Telia-garjan; Tellya-garjan (Chittagong-Cox’s Bazar); Kali-garjan (Chittagong Hill Tracts); Kuroil (Sylhet).
Tribal name: Kaingia (Mogh); Gajjam (Chakma).
English name: Gurjan Balsam, Common Gurjun Tree.

Description of the plant:
A lofty tree, 30-40 m tall with a straight bole. Leaves 12-36 cm long, variable, elliptic or oblong-ovate, rarely oblong, acute or acuminate, glabrous on both surfaces, coriaceous. Flowers in axillary, few-flowered spikes; petals 2-4.5 cm long, tomentose, more densely on the outside. Fruit-belly ovoid; wings 11.5-18 cm long.

Using information:
The oleo-resin of the trunk is stimulant to the mucous surfaces and diuretic; used as an external application for ulcers, ringworms and other cutaneous affections. It has been used in gonorrhoea, gleet and rheumatism (Yusuf et al. 2009).


Chemical constituents:
Principal constituent of the trunk is an oleoresin, known as garjan balsam, which yields an essential oil containing a hydrocarbon, β-caryophyllene, humulene, other sesquiterpenes and a sesquiterpene alcohol. Bark contains bergenin. Seeds are a rich source of urease (Ghani, 2003).

Forests of Chittagong, Chittagong Hill Tracts, Cox’s Bazar, Sylhet (Adampur).