Description from Flora of China
Covellia cyrtophylla Wallich ex Miquel, London J. Bot. 7: 460. 1848; Ficus asymmetrica H. Léveillé & Vaniot.
Shrubs or trees, 3-6 m tall, d.b.h. 5-6 cm. Bark gray, smooth. Branchlets densely covered with short stiff hairs. Stipules caducous, lanceolate, hairy. Leaves distichous; petiole 1-1.4 cm, densely covered with short stiff hairs; leaf blade oblong to oblong-obovate, strongly asymmetric, 9-15 × 5-8 cm, papery, abaxially densely covered with short stiff brown hairs, glabrescent, adaxially very rough, with papillate cystoliths, and short stiff hairs, glabrescent, base oblique, apex acuminate to caudate; basal lateral veins short, secondary veins 4 or 5 on each side of midvein. Figs axillary on normal leafy shoots, paired or clustered, yellowish orange when mature, ovoid, 8-10 cm in diam., densely covered with short stiff hairs, base attenuate into short stalk; peduncle 3-5 mm; involucral bracts small, with short and stiff hairs; lateral bracts small and scattered. Male flowers: near apical pore; calyx lobes 4, white; stamen 1. Gall flowers: style lateral, short. Female flowers: pedicel hairy; calyx lobes 5, white, linear, hairy; style lateral, long; stigma enlarged. Achenes shortly ellipsoid. Fl. May-Jun.
Open forests; 500-1300 m. Guangxi, Guizhou, SE Xizang, Yunnan [Bhutan, NE India, Myanmar, Sikkim, Thailand, Vietnam].