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Tectona grandis
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Family:
VERBENACEAE
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Citation: Tectona grandis L. f., Suppl. Pl. 151. 1781; Hook. f., Fl. Brit. India 4: 570. 1885; Gamble, Fl. Pres. Madras 1092(765). 1924; Manilal & Sivar., Fl. Calicut 231. 1982; Mohanan, Fl. Quilon Dist. 317. 1984; Ansari, Fl. Kasaragod Div. 298. 1985; Ramach. & V.J. Nair, Fl. Cannanore Dist. 358. 1988; Babu, Fl. Malappuram Dist. 622. 1990; Vajr., Fl. Palghat Dist. 369. 1990; M. Mohanan & Henry, Fl. Thiruvanthapuram 361. 1994; Subram., Fl. Thenmala Div. 280. 1995; Sasidh. & Sivar., Fl. Pl. Thrissur For. 354. 1996; Sasidh., Fl. Shenduruny WLS 244. 1997; Sivar. & Mathew, Fl. Nilambur 537. 1997; Sasidh., Fl. Periyar Tiger Reserve 312. 1998; Sasidh., Fl. Chinnar WLS 244. 1999; Sasidh., Fl. Parambikulam WLS 243. 2002; Rajendran & Daniel, Indian Verbenaceae 320. 2002; Anil Kumar et al., Fl. Pathanamthitta 395. 2005; Sunil & Sivadasan, Fl. Alappuzha Dist. 567. 2009; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 644. 2009.
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Malayalam Name(s):
Thekku
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Tamil name(s):
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English name(s):
Teak, Indian-Oak
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Description:
Deciduous trees, to 30 m high, bark 10-20 mm thick, yellowish-brown, rough, shallowly vertically fissured, fibrous; bole often fluted at base; branchlets 5-10 mm thick, 4-angled, puberulous. Leaves simple, opposite, 30-60 x 15-30 cm, ovate, obovate, apex acute or obtuse, base attenuate, margin entire, wavy, glabrous above and pubescent below with minute red glands, coriaceous; petiole 10-50 mm long, stout, tomentose; lateral nerves 8-10 pairs, pinnate, prominent, raised beneath, puberulent beneath; intercostae scalariform, prominent. Flowers bisexual, white, 7 mm across, in terminal cymose panicles, 10-30 cm across, puberulous. Calyx 5 mm long, campanulate, lobes 5-6, subequal, ovate, tomentose. Corolla 6 mm long, lobes 5-6, oblong, spreading. Stamens 5-6, equal, erect, inserted at the throat, exserted; filaments 3 mm; anthers oblong. Ovary globose, superior, densely hairy, 4-celled, 1 ovule in each cell; style slender, 4 mm; stigma linearly bifid. Fruit a drupe, 1.5-2 cm across, globose, brown, densely floccose hairy, covered by the inflated calyx, epicarp spongy, endocarp stony; seeds 1-4, oblong.
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Habit:
Tree
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Flowering & Fruiting:
May-January
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District(s):
All Districts
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Medicinal:
Yes
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Habitat:
Moist deciduous forests, also raised in plantations
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Distribution:
South and South East Asia
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Aquatic:
No
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Epiphyte(s):
No
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Saprophyte:
No
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Stem parasite:
No
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Root parasite:
No
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Flower colour(s):
White, Creamy
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Weed:
No
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Monocot/Dicot:
Dicotyledonous Plants
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Exotic:
No
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Garden:
No
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Edible:
No
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Vegetable:
No
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Endemic to:
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IUCN status:
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Altitude:
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Localities:
Kattalappara, Chinnar, Karadikkavala, Anappadi, Kalleli, Taliparamba, Bekal, Silent Valley R. F., Vandanam, Canoli, Vandalodu
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