Botanical Survey of India | Flora of India

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Dipterocarpus kerrii King in J. Asiat. Soc. Beng. 62: 93.1893.

Trees, ca 40 m tall; bole ca 4 m in girth; branchlets slender smooth, slightly flattened at tips, glabrous, dark coloured, turning black on drying. Parts of petals exposed in bud, inside of stipules, and apex of ovary densely silky pubescent, parts otherwise glabrous. Leaves 7.5 - 15 x 13.7 - 7.5 cm, elliptic to elliptic-ovate or ovate-lanceolate, obtuse, rounded or cuneate at base, acute or very shortly and bluntly acuminate or cuspidate at apex, undulate or distantly crenate towards apex, glabrous on both surfaces, turn blackish brown or chocolate brown on drying, lateral nerves 9 16 pairs, obliquely ascending, prominent beneath; petioles 2.5 - 3.8 cm long, rather slender; stipules 3.8 - 6.3 cm long, glabrous outside, silky pubescent inside, turn black on drying. Flowers 2 - 5 in axillary, simple or branched spikes, the lowest flower often distinctly pedicelled and all appearing pedicellate due to contraction at the base of calyx. Calyx tube 1.2 cm long, glabrous or glaucous, three smaller lobes scarcely 2 mm long, rounded, two larger lobes ca 5 mm long, linear-oblong. Petals ca 2.5 cm long, linear-oblong, obtuse, finely stellate-tomen-tose outside, hoary inside. Stamens ca 33; filaments 5 mm long, flattened at base. Ovary small, ovoid, densely tomentose; styles 8 mm long, glabrous in upper two-fifth portion. Fruits 2.5 - 3.3 cm in diam. in the middle, blunt at apex, glabrous, much contracted beneath calyx lobes, shortly stipitate; two longer lobes of fruiting calyx 7.5 - 14 x 2.2 - 3.1 cm, linear-oblong or oblong-lanceolate, obtuse, glabrous, three shorter lobes ca 1 x 1 cm, suborbiular, subrevolute.

Fl. Jan. - Feb.; Fr. April - July.

Distrib. India: In tropical evergreen forests, usually on hill slopes and ridges in which out crops of igneous rocks of the serpentine type are predominating. Andaman & Nicobar Islands (S. Andaman Islands).

Myanmar, Indo-China and Malesia.

Notes. This species closely resembles D.turbinatus Gaertn. f. from which it can be easily distinguished by its smaller leaves and larger nuts. It is also closely related to D.hasseltii Blume, a Malayan species, but the silky tomentose inner side of stipules enables to easily distinguish it from the latter speies in which it is totally glabrous.

Wood used for internal construction work.


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