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Nicobariodendron sleumeri Vasud. & T. Chakrab. in J. Econ. Tax. Bot. 7(3): 514. 1985.

Dioecious. Trees. 8-35 m tall; branchlets terete, glabrous, lenticellate, greyish to dark-brown. Leaves oblong-elliptic, 5.5-10 x 2-4 cm, abruptly obtusely acuminate at apex, narrowed at base, entire, coriaceous, glabrous, glossy, reddish brown to almost black above (in dried specimens), brown and punctate beneath, penninerved, midrib raised beneath, almost flat above; nerves 5-9 pairs, indistinct above, conspicuous or inconspicuous beneath, anastomose towards margin, veins reticulate, prominent or inconspicuous beneath, indisticnt above; petiole 3-8 mm long. Male inflorescence an axillary raceme, solitary or in groups of 2-3, simple or with 1-2 branches below; rachis 4-11 cm long, slender, striate, sparsely white pilose; bracts, subulate to triangular-ovate, 1-2 x 0.5-1 mm, ciliate at margin, glabrous or sparsely pubescent outside. Male flowers : Calyx, lobes oblong to ovate, 1-1.5 x 0.6-1.2 mm, obtuse, glabrous.· Petals oblong or ovate, 1.2-1.5 x 0.7-1 mm, obtuse, glabrous. Disc concave, slightly fleshy, whitish puberulous. Stamens 2, free, exserted; filaments 1.5-2.5 mm, slender, widened at base; anthers orbicular, 0.5-0.7 mm across; pistillodes small, with short filiform style. Female infructescence axillary, 6-10 cm long. Fruit oblong- ellipsoid or narrowly obovoid, 17-20 x 10 mm, 1-loculed, contracted at base, rounded or flat at apex, brown, glabrous, thin-walled, faintly ridged. Seeds 1 per fruit, attached to the base of the cavity.

Distrib. India : Andaman & Nicobar Islands. Endemic.

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