Description from Flora of China
Trees, small, or shrubs, to 10 m tall. Branchlets pale white or yellowish gray, subglabrous. Leaves trifoliate; petioles 4-10 cm; leaflets with petiolules 5-10 mm; blades abaxially olive-green, adaxially brown when dry, papery, abaxially with tufts of hairs in lateral vein axils, margin sparsely serrulate above middle; terminal blade lanceolate or narrowly elliptic-lanceolate, 12-24 × 3-9 cm, base cuneate or broadly so, apex caudate-acuminate; lateral ones ovate or broadly ovate, bilaterally asymmetrical. Inflorescences compound racemose, usually with several or numerous branches, solitary, or sometimes accompanied with 1 or 2 unbranched inflorescences, rachis and branches grooved, grayish yellow pubescent; peduncles 3-4.5 cm; female ones ascending, male ones slender and curved. Pedicels 2-3 mm. Petals shortly cuneate, ca. 1.3 mm, claw villous; scales 2-lobed. Filaments slightly stouter proximally. Ovary (2 or)3-lobed, (2 or)3-loculed, lobes often unequal. Fruit red, ellipsoid, 9-10 × 6-7 mm. Fl. summer-autumn, fr. autumn-winter.
Dense forests; 1100-1600 m. S Guizhou, S Yunnan [N Vietnam].