榕树 rong shu

Ficus amblyphylla (Miquel) Miquel; F. cairnsii Warburg; F. condaravia Buchanan-Hamilton; F. littoralis Blume; F. microcarpa var. crassifolia (W. C. Shieh) Liao; F. microcarpa var. fuyuensis J. C. Liao; F. microcarpa var. oluangpiensis J. C. Liao; F. microcarpa var. pusillifolia J. C. Liao; F. retusa Linnaeus var. crassifolia W. C. Shieh; F. retusiformis H. Léveillé; F. rubra Roth; Urostigma amblyphyllum Miquel.

Trees, 15-25 m tall, crown wide, d.b.h. to 50 cm. Bark dark gray. Branches producing rust-colored aerial roots when old. Stipules lanceolate, ca. 0.8 cm. Petiole 5-10 mm, glabrous; leaf blade narrowly elliptic, 4-8 × 3-4 cm, ± leathery, adaxially dark green and shiny but dark brown when dry, base cuneate, margin entire, apex ± obtuse; basal lateral veins long, secondary veins 3-10 on each side of midvein. Figs axillary on leafy branchlets or on leafless older branchlets, paired, yellow to slightly red when mature, depressed globose, 6-8 mm in diam., inside with a few short bristles among flowers, sessile; involucral bracts broadly ovate, persistent. Male, gall, and female flowers within same fig. Male flowers: scattered, sessile or pedicellate; filament as long as anther. Gall and female flowers: sepals 3, broadly ovate; style ± lateral; stigma short, clavate. Achenes ovoid. Fl. May-Jun.

Mountains, plains; below 1900 m. Fujian, Guangdong, Guangxi, Guizhou, Hainan, Taiwan, Yunnan, S Zhejiang [Bhutan, India, Malaysia, Myanmar, Nepal, New Guinea, Sikkim, Sri Lanka, Thailand, Vietnam; N Australia].

This species is commonly cultivated in China as a shade tree.