Tree to 20 m, 40 cm ø. Twigs glabrous, often with cushion-shaped conspicuous leaf-scars, terminal buds with many scales, 5-10 mm long. Leaves glabrous, narrowly ovate to elliptic, with cuneate, acute base, slightly dentate, nearly entire margin and acuminate apex, 6-21 by 2-7 cm; nerves (8-)10-13(-14) pairs; petiole 10-25 mm. Spike from the axils of the leaves or on wood, in bud resembling a cone like in S. barringtoniifolia, becoming at most 4 cm long, axis tomentose to pubescent. Bracts and bracteoles densely sericeous to pubescent, broadly boat-shaped, 5-8 mm long, soon caducous, and 2-3 mm long, later caducous respectively. Calyx glabrous, entirely divided into (narrowly) ovate to triangular, 2½-3 mm long lobes. Corolla 3-5 mm. Stamens 60 to more than 100. Disk shortly pilose. Ovary glabrous, c. ½ mm high; style glabrous except sometimes the very base, 3-6 mm long. Fruit ellipsoid to cylindrical, often slightly curved, azure blue, 20-40 by 8-20 mm; mesocarp thick, corky, stone with c. 8 high ridges, 3-celled with a central canal, often only 1 cell developed. Seed cylindrical; embryo straight.
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