Trees to 10 m tall. Young branchlets yellow-green; old branchlets yellow-brown, striate, glabrous, with sparse lenticels. Petiole stout, 1-1.7 cm, sulcate adaxially, glabrous or sparsely puberulous; leaf blade oblong or oblong-elliptic, 1-13 × 2.8-6.8 cm, thinly leathery, both surfaces glabrous except barbellate at axils of reticulate veins, midvein and secondary veins prominently raised abaxially, impressed adaxially, secondary veins in 5-8(-10) pairs, arcuate ascending, tertiary veins subparallel, reticulate veins prominent, base rounded-obtuse, margin slightly sharply serrulate, apex acute or acuminate. Racemes rarely axillary, often 1 or 2, 9-17 cm; rachis yellow puberulous; bracts ca. 1 mm. Pedicel 2-3 mm, yellow puberulous. Calyx cupular; lobes triangular, ca. 1 mm, puberulous. Petals erect at anthesis, white, linear-lanceolate. Stamens shorter than or subequaling petals; filaments hairy; anthers subglobose. Ovary semi-inferior, sparsely puberulous. Stigma capitate. Capsule pendulous, 4-6 mm. Fl. and fr. Jul-Aug.

* Mixed forests; 1500-2300 m. SE Xizang, NW Yunnan.