西藏栎 xi zang li

Trees 15-20 m tall, evergreen. Young branchlets densely reddish tomentose, grayish brown with age, glabrescent, lenticellate; lenticels inconspicuous. Petiole 0.8-2 cm, tomentose, glabrescent; leaf blade elliptic to ovate-elliptic, 7-14 × 3.5-5 cm, densely reddish tomentose when young, abaxially densely yellowish gray tomentose with age; midvein basal portion adaxially pubescent, base broadly cuneate and nearly unequal, margin except basal portion sharply serrate, apex cuspidate to shortly acuminate; midvein adaxially slightly raised; secondary veins 14-18 on each side of midvein and adaxially impressed. Infructescences short, usually 1-fruited. Cupule discoid, 5-10 mm × 1.8-2.2 cm; bracts broadly ovate, thick and hard, crowded, tomentose. Nut oblate-conical, ca. 2 cm in diam., glabrous or apex slightly brown tomentose; scar 1-1.2 cm in diam., flat.

Forests in mountains; 1800-2400 m. SE Xizang [Myanmar]