Description from Flora of China
Trees, up to 35 m tall, to 60 cm d.b.h. Bark gray-black. Branchlets red-brown, subterete, ± angled, glabrous. Buds large, ovoid, up to 7 × 5 mm; bud scales clustered, ovate to broadly ovate, puberulent abaxially and on margin. Leaves alternate; petiole red-brown when dry, 2-4 cm, plano-convex, glabrous; leaf blade greenish abaxially, green adaxially, ovate, 7-12.5 × 2.8-7.8 cm, thinly leathery, pinninerved, lateral veins ca. 5 pairs, arcuate-ascendant, gradually evanescent within leaf margin, lateral veins and midrib yellow-brown on both surfaces when dry, very elevated abaxially and slightly elevated adaxially, axils of lateral veins inconspicuously dome-shaped abaxially, transverse veins and veinlets reticulate, shallowly and finely foveolate, slightly conspicuous on both surfaces, base subrounded, apex shortly acuminate. Flowers unknown. Infructescence paniculate, lateral, up to 6 cm; rachis sparsely yellow-brown puberulent. Fruit ovoid, ca. 2 × 1.7 cm, apex rounded; perianth cup in fruit shallowly cupuliform, ca. 1.5 cm long and broad, ± woody, reddish brown when dry. Fr. May-Oct.
● Sunny sites on mountain slopes; 1700-2100 m. S Yunnan.