Dioecious erect shrub to 2 m high. Leaves simple, broadly lanceolate to ovate, often conduplicate and recurved, acute, entire to sinuate, undulate, attenuate to truncate at base; lamina 2.5–4.5 cm long, rarely to 6.6 cm, 0.8–2.5 cm wide, glabrous; petiole 7.5–14 mm long. Flowers in terminal panicles; pedicels 2.5–5.5 mm long, rarely to 8 mm. Sepals 5, linear-lanceolate, 1.2–2.5 mm long, persistent. Stamens 6–10. Ovary glabrous. Capsule 3-winged, broadly oblong to ellipsoidal in lateral view, greatly inflated, 16–30 mm long, rarely to 38 mm, 12–25 mm wide, rarely to 30 mm, glabrous; wings 1.5–4 mm wide, membranous; not readily dehiscent.
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