Home >> Ethnobotany Plants Part-T >> Tectona grandis L. f.

Tectona grandis L. f.

Group: Dicot
Family: Verbenaceae - Verbena family
Duration: Perennial
Growth Habit: Tree

Bangla/Vernacular Name: Segun.

Tribal Name: Saccon (Chakma), Klapang (Khumi), Segun (Bawm), Segoon (Rakhaing).

English Name: Teak.

Description of the Plant:

A large tree. Leaves elliptic or obovate. Flowers white, panicles erect. Fruit a nut.

Chemical Constituents:

Wood contains a resin, a little essential oil, fatty oil, fatty acids (stearic, palmatic, oleic and linoleic acids) and a quinine-like substance, tectoquinine(2-methylanthra-quinone). It also contains anthraquinones, naphthaquinones, quinones, different fatty acids, squalene, betulic acid, a triterpene (C30H48O5) and other terpenoids, sugars, polyisoprene, caouthouc-like substances occur predominantly in the lumen. Bark contains tannins. The skin-irritant lapachomone and the antioxidant tectol are present in the heartwood, which also yields a yellowish brown oil and 2-methylanthraquinone.

Leaves contain a number of quinones including a quinone having the formula, C19H14O6. Seeds contain a fixed oil containing chiefly stearic, palmitic, oleic and linoleic acids (Ghani, 2003). Root contain lapachol, tectol, dehydrotectol, tectoquinone, ß-lapachone, dehydro-a-lapachone and ß-sitosterol (Rastogi & Mehrotra, 1993).

Mode of Uses:

A brown dye is prepared from the bark and used for dying the cotton thread used in hand weaving; the leaves are used as thatching material. Chakma also use the wood to make looms and shuttles for weaving (Chakma).

Timber is used as fuel and to prepare furniture and household materials (Khumi).

Timber is used for the construction of houses and also for wooden stairs for house (Bawm).

Bark infuses in water for 24 hours & the bark water is taken half cup twice daily for seven days for the treatment of leucorrhoea (Rakhaing).

Distribution:

Chittagong, Chittagong Hill Tracts, Cox's Bazar; occasionally cultivated to other parts of the country.

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