毛脉青冈 mao mai qing gang

Quercus tomentosinervis (Y. C. Hsu & H. W. Jen) C. C. Huang.

Trees to 20 m tall. Branchlets sulcate, villous when young, soon glabrescent. Petiole 2-3.5 cm, adaxially sulcate; leaf blade ovate to oblong-elliptic, 7-15 × 3-5 cm, leathery, abaxially grayish brown tomentose (denser so along veins), adaxially bright green and glabrous, base broadly cuneate to subrounded, margin entire or apically indistinctly serrulate, apex caudate; midvein adaxially impressed; secondary veins 11-15 on each side of midvein; tertiary veins abaxially evident. Female inflorescences 5-7 cm; rachis villous. Cupule bowl-shaped, ca. 8 mm × 1.3-1.5 cm, enclosing ca. 1/3 of nut, outside pubescent, inside orangish brown sericeous, wall less than 1 mm thick; bracts in 6 or 7 rings, margin of apical 2 entire, others triangular denticulate. Nut ovoid-ellipsoid, 1.5-1.7 × 1.3-1.5 cm, glabrous; scar 5-8 mm in diam., convex; stylopodium persistent. Fr. Dec.

* Broad-leaved evergreen forests; circa 2300 m. SE Guizhou, S to SE Yunnan