Small to medium-sized tree 5-25 m high, 4-40 cm dbh. Bark rough, shallowly longitudinally and horizontally fissured, grey or pale brown; inner bark yellow or yellowish brown, without exudate. Branchlets glabrous or pubescent. Leaves in whorls of 3 or 4; petiole glabrous or pubescent, 4-17 mm long, few or many minute colleters and densely packed together in the axils; blade subcoriaceous when dried, obovate to very narrowly obovate, 3-15 by 1-5.5 cm, 2.7-4.6 times as long as wide, apex shortly acuminate with a blunt tip, sometimes obtuse, base cuneate or decurrent onto the petiole, glabrous above or pubescent only on the midrib and on the secondary veins, pubescent beneath; 10-15 pairs of secondary veins, rather straight, forming an angle of 50-80° with the midrib, 4-12 mm from each other; tertiary venation reticulate, conspicuous beneath or sometimes on both sides. Inflorescence 4-9 mm long, many-flowered; pedicels 1-2.5 mm long, pubescent. Bracts and bracteoles scale-or sepal-like, ovate, 1-2 mm long. Flowers fragrant. Sepals pale green, connate at the base for 0.5-1(-1.5) mm, ovate, 1.7-2.5 by 0.7-1.3 mm, obtuse, pubescent outside, pubescent or puberulous inside, ciliate, erect. Corolla lobes dextrorse; white, 4-9.2 mm long in the mature bud and forming an ovoid or narrowly ovoid head, 1-4.2 by 0.9-1.2 mm, pubescent outside, ciliate on corolla lobes; lobes obliquely strap-shaped, more or less falcate, 2.1-5 by 0.8-1.4 mm, 2.6-5 times as long as wide, pilose inside, acute or obtuse. Stamens inserted at 1.7-2.3 mm from the base; anthers ovate, 0.8-1 by 0.3-0.5 mm, obtuse. Pistil 1.8-2.6 mm long; ovary ovoid, 0.7-1.3 by 0.6-1 mm, glabrous or sparsely hairy, a disk-like thickening at the base and 0.15-0.35 mm high; style 0.8-1.3 mm long; style head ovoid, 0.4-0.8 by 0.3-0.5 mm, with a cleft stigmoid apical part c. 0.1 mm high, glabrous or minutely hairy. Fruit a pair of follicles, 13-32 cm by 2.5-3 mm, glabrous. Seeds oblong (rarely elliptic), c. 7.5 by 1.3 mm, one end rounded and the other long acuminate up to 2.5 mm long, pubescent on both sides, longest cilia 8-10 mm long, reducing gradually towards the margins.
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Tree to 15 m high. Leaves opposite or 3-whorled; petiole 6–8 mm long; lamina elliptic-obovate to lanceolate, to 19 cm long, to 7 cm wide, cuneate, shortly acuminate to acute, discolorous; secondary veins 14–18 each side of midrib, 5–10 mm apart; tertiary venation reticulate and faintly visible. Inflorescence 3–10 cm long. Flowers 4.8–5 mm long, 4.5–5 mm diam.; pedicels 1.4–3 mm long. Sepals lanceolate-ovate, 0.8–1.4 mm long. Corolla cream; tube 3.2–4.8 mm long, with dense external indumentum; lobes lanceolate, 2.1–3 mm long, glabrous externally, with dense internal indumentum. Fruit 12–39 cm long. Seeds oblong, 5–6 mm long; hairs 8–10 mm long.
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