Trees to 20 m tall. Leaves even-pinnate, rarely odd-pinnate, 15-35 cm; petiole 2.5-11.5 cm, glabrous or pubescent; rachis glabrous or pubescent; leaflets 4-14, entire, sessile or petiolulate, blade elliptic, elliptic-lanceolate, or elliptic-ovate, 7-15 × 2-7 cm, abaxially glabrous or pubescent, base broadly cuneate, apex shortly acuminate. Nutlets globose or ovoid, 3-6 mm, hispid; wings hispid at base, middle wing 2.5-3.5 cm, lateral wings ca. 1.5-2 cm. Fl. Nov-Apr, fr. Jan-Aug(-Nov). 2n = 32.

Forests on mountain slopes or in valleys; near sea level to 2100 m. Guangdong, Guangxi, Guizhou, Hainan, Xizang, Yunnan [Bhutan, India, Indonesia, Laos, W Malaysia, Myanmar, Nepal, Pakistan, Philippines, Sikkim, Thailand, Vietnam].