皱果南蛇藤 zhou guo nan she teng

Twining shrubs, 4-5 m tall; branchlets gray-brown, lenticels absent; axillary buds triangular-ovate, ca. 2 mm. Petiole 1-1.5(-2) cm; leaf blade obovate or broadly elliptic, 7-13 × 4-6.5 cm, leathery, gray-green, margin slightly revolute, only serrulate on distal half; secondary veins 7-10 pairs, prominent on both surfaces, veinlets sparse. Inflorescences terminal or axillary. Flowers 5-merous. Fruit approximately globose or very broadly elliptic, ca. 10 mm, valves hard, lower surface transversely rugose, brown, persistent sepals thickened; stipes sturdy, 5-8 × 1-2 mm. Seed 1, broadly elliptic, ca. 7 × 5 mm. Fr. Oct.

Forests, thickets, mountainous regions; 1000-1800 m. W Guangxi, E Yunnan [N Vietnam].