Trees to 20 m tall, androdioecious, sometimes andromonoecious. Bark orange-brown or red-brown, fissured. Branchlets cylindric, those of present year purplish, densely pubescent, older ones dark purple or dark brown, hairs persistent on branchlets for 2 or 3 years; buds dark and small. Leaves deciduous; petiole 2-4 cm, densely pilose; leaf blade papery, abaxially glaucous, pubescent, densely so on veins, adaxially dark green, pubescent when young, glabrescent, with 3 leaflets per petiole; petiolule 5-8 cm, pubescent; leaflet blades elliptic or elliptic-oblong, 3-8 × 2-5 cm, apex acute; middle leaflets cuneate apically, coarsely toothed, with 2 or 3 large ± blunt teeth. Inflorescence cymose, small, pilose, usually 3-flowered. Pedicel 2-3 cm, densely pilose. Sepals 5. Petals 5. Stamens 10, glabrous. Disk glabrous, extrastaminal. Fruit yellowish brown; nutlets globose, 8-10 × 6-8 mm, densely pubescent; wing including nutlet 3.2-3.8 × ca. 1.4 cm, wings spreading at 90° or nearly erectly. Fl. Apr, fr. Sep.
Can be grown by graftings or seedlings. Seeds needs scarification and soaking.
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