Tree to 10 m high, developing from a divaricately branched shrub stage armed with spur branchlets. Trichomes simple, fasciculate, stellate, and scale-like. Leaves opposite, impari-pinnate or trifoliolate (occasional leaves bifoliolate or simple), 3–5-foliolate, (0.8–) 1.5–6.3 cm long; petiole and rachis winged or marginate; leaflets sessile; laminae elliptic to obovate, or narrowly so, or spathulate or sublinear, equilateral, 0.6–3.7 cm long, 0.2–0.8 cm wide, rounded to acute. Inflorescences 2–9 cm long. Flowers bisexual or at least a few male. Sepals 1–1.3 mm long. Petals 3–3.5 mm long, white to cream, glabrous. Ovules 2 on each side of placental arms. Capsule 2–3 cm long, separating (or easily separable) into 5 distinct valves at maturity; exocarp muricate, glabrous, with excrescences 1–2 mm long. Seeds 2 on each side of much-enlarged placental arms, 1.5–1.8 cm long, winged at both ends. Embryo with lateral hypocotyl.
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