Dioecious erect shrub to 5 m high. Leaves imparipinnate, 1.5–5.2 cm long excluding petiole; leaflets 17–23, linear, channelled above, convex below, obtuse, rarely tri-dentate at apex, entire, narrowly cuneate at base, 2–13 mm long, rarely to 23.5 mm, 0.5–1.5 mm wide, usually sparsely pubescent or rarely glabrous; petiole 7–17.5 mm long, rarely to 25 mm. Flowers in 2–6-flowered axillary cymes; pedicels 3–8.5 mm long. Sepals 3 or 4, ovate, 1.5–3.5 mm long, caducous. Stamens 6, rarely 7 or 8. Ovary glabrous, or sparsely pubescent near apex. Capsule 3-winged, rarely 4-winged, depressed-obovate in lateral view, 4.5–7.5 mm long, 9–16 mm wide, glabrous; wings 2–5 mm wide, membranous; dehiscence septifragal.
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