Description from Flora of China
Trees, small, to unbranched treelets, 3-10 m tall, andromonoecious. Branches densely fulvous hispid and with short, stout prickles. Leaves 2-pinnately compound, with a pair of accessory leaflets or 3-5-foliolate pinnae at each division of rachis; petiole to 100 cm, stout, densely fulvous hirsute, with short prickles; petiolules (0-)0.5-3 mm; leaflets 5-9 per pinna, ovate, 10-22 × 5-11 cm, leathery, abaxially densely fulvous hirsute, especially on veins, adaxially rugose and ± hirsute, secondary veins 8-10 pairs, abaxially conspicuous, tertiary veins inconspicuous, base subcordate to rounded, margin serrulate, apex acuminate. Inflorescence a terminal panicle of umbels, densely fulvous hirsute-tomentose, with short, straight, conic prickles; primary axis to ca. 200 cm; secondary axes 10-60 cm; ultimate axes with a terminal umbel of bisexual flowers and several lateral umbels of male flowers; bracts caducous, lanceolate, to 2 cm; umbels 20-40-flowered; pedicels 1-8 mm, densely fulvous hispid. Ovary 5-carpellate; styles 5, free. Fruit globose to ovoid-globose, 3.5-4 × 3-3.5 mm; styles persistent, radiating. Fl. Oct, fr. Jan-Feb.
Forests, open areas, roadsides, riversides; 500-2400 m. C and SE Yunnan (Hekou, Jingdong, Pingbian) [Myanmar, Vietnam].