Tree, 5-16 m high. Flowering branchlets 2-4 mm in diam. Leaves 2-4-jugate; rachis 1.9-14.7 cm long, terete, subsericeous. Leaflets 4.5-21 by 1.5-7.5 cm; apex acuminate, very apex rounded (Nicobar Islands) to almost acute (Sumatra). Inflorescences axillary to pseudoterminal, axes branching in axil or along rachis, all up to 11 cm long. Bracts and bracteoles triangular to long-triangular; bracts 0.8-2 mm long; bracteoles 0.3-1.6 mm long. Pedicels sericeous, upper part 1.2-6.3 mm long. Flowers 2.8-4.2 mm in diam. Sepals 5; lobes 1-2.8 by 0.8-1.4 mm, mainly outside sericeous. Petals 5; blade triangular, 0.6-1.2 by 0.5-1.1 mm, completely pilose; scale 0.8-1 by 0.8-1.5 mm; crests absent. Disc uninterrupted, 0.5-0.7 mm high, margin often revolute, higher than broad. Stamens 8; filaments in male flowers 1.2-3 mm long, yellow; anthers in male flowers 0.7-1.2 by 0.6-0.8 mm, pink to reddish purple. Pistil: ovary in male flowers 0.2-0.5 mm high, 2-locular, subgla-brous; style and stigma in male flowers 0.05-0.1 mm high. Fruits 3.2-4.5 by 1.7-2.4 cm, inside densely hirsute with hairs 1-1.5 mm long; stipe 3-5 mm high. Seeds 1.9-2.2 by 1.3-1.7 cm, base oblique; sarcotesta covering seed at base, present around hilum, forming obpyramidal outgrowth below seed; hilum 7-8 mm long.
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