Trees, 5-25(-30) m tall. Terminal buds densely ferruginous hirtellous. Young branchlets compressed, angled and finely striate, ferruginous hirtellous. Leaves alternate, opposite, or subopposite; petiole 1-2.5 cm, densely ferruginous hirtellous when young but soon glabrate; leaf blade abaxially tea-brown and adaxially blackish brown when dry, elliptic to oblong, 11-23 × 3.6-10.2 cm, papery, abaxially densely glandular-punctate when dry, densely ferruginous hirtellous on both surfaces when young, ferruginous hirtellous along midrib and veins only or glabrous abaxially and ferruginous hirtellous on reticulate veins when old, midrib and lateral veins abaxially conspicuously elevated, adaxially slightly elevated or plane, lateral veins 9-12 pairs, obliquely patent, reticulate veinlets conspicuous on both surfaces, margin cartilaginous, apex shortly acuminate to acuminate, sometimes acute to subrotund. Cymose panicles axillary or subterminal, 1.8-3 cm; peduncles and rachises densely ferruginous hirtellous; bracts and bracteoles obovate, up to 3 × 2 cm, hirtellous. Pedicels ca. 2.5 mm. Flowers yellow, ca. 3.5 mm. Perianth segments broadly ovate, ca. 2.5 × 2 mm. Fruits ellipsoid-oblong, 4.5-5.5 × 2.5-2.7 cm, attenuate at both ends, apiculate at apex. Fl. and fr. Dec-Mar of next year.

● Thickets or broad-leaved forests along valleys; 1100-1700 m. SE Yunnan.