Trees to 30 m tall. Leaves even-pinnate, 15-23 cm; petiole 4.8-7 cm, pubescent or glabrescent; rachis pubescent; leaflets 6-10, petiolule 2-3 mm, blade oblong-ovate or oblong-elliptic, 5-10.5 × 2.5-4 cm, abaxially pubescent along midvein and with scattered hairs in vein axils, base oblique, subobtuse or subcordate, margin serrate, apex acuminate. Nutlets obovoid, 8-10 × 5-7 mm, hispid; wings hispid at base, middle wing 5-6 cm, lateral wings 2.5-2.8 cm. Fr. Dec-Jan.

* Forests in valleys. SW Hainan (Dongfang: Jianfeng Ling)