Trees to 4 m tall, andromonoecious. Bark gray or brown-gray, smooth. Branchlets slender, glabrous, those of present year green or purplish green, older ones grayish or gray-green. Leaves deciduous; petiole 4-5 cm, slender, yellow pubescent; leaf blade abaxially green, adaxially dark green, elliptic, 7-10 × 8-12 cm, papery, abaxially pubescent in vein axils, adaxially glabrous, base truncate or subcordate, 5-lobed to ca. 1/2 width of blade, rarely 3-lobed or shortly lobed at base; lobes lanceolate or ovate-oblong, margin serrulate, apex caudate-acuminate. Inflorescence erect, paniculate, 4-5 cm; peduncles ca. 3 cm. Sepals 5, gray-green, ovate-oblong, ca. 1.5 mm. Petals 5, white-green, oblong. Stamens 8. Disk extrastaminal, slightly lobed, glabrous. Ovary densely yellow pilose; style glabrous; stigmas recurved. Fruit yellowish brown; nutlets convex, ovoid, ca. 4 mm in diam.; wing falcate, including nutlet 2.5-2.7 × 0.8-1.6 cm, wings spreading obtusely or ± horizontally. Fl. Apr, fr. Sep.

● Mixed forests; 900-1200 m. NE Guangxi, SE Guizhou.