Description from Flora of China
Trees, 7-10 m tall. Branchlets slender, sparsely pubescent. Winter buds spindle-shaped, ca. 7 mm, pubescent. Stipules lanceolate, 1-1.5 cm, membranous. Petiole 7-10 mm, pubescent; leaf blade lanceolate to narrowly elliptic, 10-14 × 2.5-3.5 cm, both surfaces glabrous or abaxially pubescent on major veins, base cuneate, margin entire, apex long caudate; midvein prominent on both surfaces; basal lateral veins short, secondary veins 9-12 on each side of midvein at about 90° to midvein, and abaxially conspicuous. Figs axillary on normal leafy shoots, solitary or paired, sparsely spotted, ellipsoid-globose to globose, ca. 1 cm in diam., glabrous, apical pore slightly navel-like; peduncle 0.4-2 cm; involucral bracts broadly ovate, margin membranous. Male flowers: near apical pore; pedicel ca. 2 mm. calyx lobes 4, obovate, glabrous; stamens 2; filaments short; anthers ellipsoid. Gall flowers: basal or around middle; calyx lobes 4; ovary stipitate, ± globose; style lateral, short; stigma deeply 2-branched. Fl. Jun-Jul.
Berg (in litt.) does not believe that it is practicable to maintain the following varieties.
Forests; 2000-2700 m. SE Xizang, NW Yunnan [NE India, Myanmar].