Family: Verbenaceae
Genus: Tectona
Botanical name: Tectona grandis Linn
Sanskrit: Sakha, Bhoomisaha
English: Teak, Tropical hardwood tree
Hindi: Sagvan, Sagoun
Malayalam: Thekku, Vanthekku
Teak is a large, deciduous tree up to 40 m (131 ft) tall with gray to grayish brown branchlets. Leaves are ovate-elliptic to ovate, 15–45 cm (5.9–17.7 in) long by 8–23 cm (3.1–9.1 in) wide, and are held on robust petioles that are 2–4 cm (0.8–1.6 in) long. Leaf margins are entire.
Fragrant white flowers are borne on 25–40 cm (10–16 in) long by 30 cm (12 in) wide panicles from June to August. The corolla tube is 2.5–3 mm long with 2 mm wide obtuse lobes. Tectona grandis sets fruit from September to December; fruits are globose and 1.2-1.8 cm in diameter. Flowers are weakly protandrous in that the anthers precede the stigma in maturity and pollen is shed within a few hours of the flower opening. The flowers are primarily entomophilous (insect-pollinated), but can occasionally be anemophilous (wind-pollinated).] A 1996 study found that in its native range in Thailand, the major pollinator were species in the Ceratina genus of bees.
Leaves of the teak wood tree are used in making Pellakai gatti (jackfruit dumpling), where batter is poured into a teak leaf and is steamed. This type of usage is found in the coastal district of Udupi in the Tulunadu region in South India. The leaves are also used in gudeg, a dish of young jackfruit made in Central Java, Indonesia, and give the dish its dark brown colour.
The whole parts of the Teak is used for anemia, inflammatory swellings, skin itching, dysentery and Wood is good for headache, biliousness, burning sensation pain, and liver related troubles.
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