Trees, 10-24 m tall, up to 45 cm d.b.h. Branchlets yellow-brown, terete, compressed when young, striate, glabrous. Terminal buds ovoid, glabrous. Leaves subopposite or alternate, always clustered at apex of branchlet; petiole 1-2 cm; leaf blade abaxially greenish, adaxially dark green and shiny then green- brown or yellow-brown when dry, elliptic to oblong, 9-21 × 3.5-6 cm, leathery, glabrous on both surfaces, midrib abaxially elevated, adaxially impressed, lateral veins 9-13 pairs, obliquely patent, arcuately interconnected at ends, lateral veins and reticulate veins abaxially slightly elevated, adaxially conspicuously elevated, base cuneate or broadly cuneate, margin revolute, apex acute or shortly acuminate, rarely obtuse. Inflorescences (3-)5.5-7.5 cm; rachises robust, up to 4 mm in diam., rugose, glabrous. Fruits green when young, becoming dark brown when mature, ellipsoid or olive-shaped, 3.3-3.7 × 1.5-2.3 cm, attenuate or subrotund at both ends, smooth, glabrous; fruiting pedicels robust, ca. 1 cm × 3-5 mm. Fr. Mar-Apr.

● Mixed forests; 600-1400 m. S Yunnan.