9. Ficus orthoneura H. Léveillé & Vaniot, Repert. Spec. Nov. Regni Veg. 4: 66. 1907.
直脉榕 zhi mai rong
Ficus caesia Handel-Mazzetti; F. federovii W. T. Wang; F. hypoleucogramma H. Léveillé & Vaniot; F. imenensis S. S. Chang.
Trees, 2-10 m tall, d.b.h. 5-15 cm. Branchlets terete, longitudinally fissured when dry, sparsely pubescent when young. Stipules greenish white, lanceolate, ca. 5 cm, membranous. Leaves clustered apically on branchlets; petiole slightly flattened, 2-5 cm; leaf blade obovate to elliptic, 8-15 × 6-9 cm, leathery, abaxially pale green with pale brown veins, adaxially dark green, base rounded to ± cordate, margin entire, apex rounded or mucronate; basal lateral veins short, secondary veins 7-15 on each side of midvein, parallel, straight, and reticulate near margin, reticulate veins ± pale brown. Figs axillary on leafy branchlets, paired or solitary, globose to ovoid-globose, 1-2 cm in diam., base ± attenuate into short stalk, pedunculate, apical pore navel-like; involucral bracts free, small. Male, gall, and female flowers within same fig. Male flowers: few, scattered among other flowers, pedicellate; calyx lobes 4, lanceolate; stamen 1; anther ellipsoid, longer than filament. Gall flowers: style very short. Female flowers: calyx lobes 4 or 5; ovary obliquely ovoid; style lateral, linear, persistent; stigma slightly 2-lobed. Achenes globose, smooth. Fl. Apr-Sep.
Limestone mountains; 200-1700 m. W Guangxi, SW Guizhou, C and S Yunnan [Myanmar, NW Thailand, N Vietnam].