DIPTEROCARPUS TURBINATUS Gaertn.

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).


DIPTEROCARPUS TURBINATUS
DIPTEROCARPUS TURBINATUS Gaertn.


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).

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