Shrubs, 1-4 m tall, dioecious. Branchlets, petioles, and rachis densely brownish yellow hispid. Leaves trifoliate; petioles 5-11 cm or longer; leaflets with petiolules 5-12 mm; blades brownish yellow when dry, membranous, abaxially densely irregularly and shiny hispid, adaxially sparsely adnate hispid; terminal blade oblong-lanceolate or elliptic-obovate, 6-18 × 2-6 cm, base cuneate, margin sharply serrate above middle, apex acuminate; lateral ones smaller, obliquely ovate, base obtuse, bilaterally asymmetrical, margin sharply serrate from base. Inflorescences racemose, unbranched; female ones strong, stout, sparsely flowered, nearly as long as or slightly shorter than leaves; male ones slender, densely flowered, nearly as long as petioles. Pedicels 1-2 mm. Petals broadly cuneate, ca. 1.5 mm; scales 2-lobed. Fruit red, broadly obovoid, ca. 9 × 8 mm. Fl. summer, fr. autumn.

Sparse forests. Yunnan (Xishuangbanna) [Cambodia, Thailand].