Woody climbers, 1-2 m, ?deciduous. Young branches yellowish green or light brown; old branches purple-brown or brown, striate, glabrous; bud scales triangular or triangular-ovoid, thick. Petiole 3-10 mm; leaf blade abaxially light green, adaxially dark green, olivaceous-green when dried, ovate-lanceolate, oblong-ovate, or elliptic-ovate, 6-14 × 2-6 cm, papery, both surfaces glabrous, lateral veins 4-6 pairs, reticulate veins sparse, base rounded or broadly cuneate, apex acuminate or long acuminate. Cymes 2-6-flowered, to 5 cm; peduncles 1.5-3 cm. Pedicel 5-10 mm. Sepals 5, ovate, 0.5-1 mm, ciliate. Petals 5, white, ovate or ovate-elliptic, 2-3 × 1.5-2 mm, inconspicuously 7-veined, apex rounded. Stamens 5, 1.2-2 mm; filaments flattened; anthers upright, elliptic, introrse. Disk cup-shaped. Ovary ovoid, glabrous. Schizocarp green, subreniform, somewhat compressed, 5.5-7 × 6.5-8 mm; endocarp without midrib, with foveolate. Fl. Apr-Jun, fr. Jul-Oct.
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