Evergreen twining shrubs, to 10 m tall; annotinal branchlets purplish brown; lenticels sparse, elliptic or suborbicular. Petiole 1-2 cm; leaf blade broadly rectangular-elliptic to narrowly elliptic, rarely obovate-elliptic, 5-17 × 3-7 cm, approximately leathery, glabrous, base cuneate, rarely widely cuneate, margin serrulate, apex acuminate or acute; secondary veins 5-7 pairs. Thyrses axillary, sometimes terminal; rachis 1-2.5 cm, glabrous; pedicels 1-4 mm, jointed at base, generally glabrous. Flowers yellowish green or whitish. Male flowers: sepals triangular-semiorbicular, ca. 1 mm; petals rectangular or rectangular-elliptic, ca. 2.5 × 1.8 mm, revolute during blossoming; disk carnose, flat, shallowly 5-lobed, lobe apex approximately truncate; stamens 5, 2.5-3 mm, inserted on disk; filament subulate. Female flowers: pistils approximately ampullaceous; styles 3-lobed, revolute; staminodes ca. 1 mm. Capsule broadly elliptic, rarely globose, 10-18 × 9-14 mm; valves elliptic, 12-20 × 8-10 mm, revolute when dry, margin crispate. Seed 1, elliptic, 10-15 × 6-9 mm, glabrous, slightly verrucose; aril purplish brown. Fl. Mar-Jun, fr. Jun-Oct.
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