环纹榕 huan wen rong

Ficus flavescens Blume; Urostigma annulatum (Blume) Miquel; U. flavescens (Blume) Miquel.

Trees, large, epiphytic when young and semiclimbing. Stipules caducous, lanceolate-linear, 2.5-6 cm, pubescent. Petiole 3-4 cm, glabrous or sparsely pubescent; leaf blade narrowly elliptic to elliptic-lanceolate, 13-28 × 5-8 cm, ± leathery, abaxially pale green and glabrous or sparsely pubescent, adaxially dark green and glabrous, base cuneate to rarely ± rounded, margin entire, apex shortly acuminate; basal lateral veins 2, short, secondary veins 12-17 on each side of midvein, abaxially conspicuous. Figs axillary on leafy branchlets, paired, reddish orange with scattered white spots when mature, ovoid to cylindric, 2-2.5 × 1.5-2 cm, tuberculate, apical pore navel-like; peduncle robust, 1-1.5 cm; involucral bracts caducous, ovate, apex acute, scar conspicuous. Male, gall, and female flowers within same fig. Male flowers: scattered, pedicellate; stamen 1. Gall flowers: many; sepals connate, apex 3-lobed; ovary ovoid, smooth; stigma flat. Female flowers: few; calyx 4-lobed; style long; stigma clavate. Achenes tuberculate. Fl. May.

Montane forests; 500-1300 m. S Yunnan [Indonesia, Malaysia, Myanmar, Philippines, Thailand, Vietnam].