俅江青冈 qiu jiang qing gang

Quercus kiukiangensis (Y. T. Chang ex Y. C. Hsu & H. W. Jen) Y. T. Chang; Cyclobalanopsis xizangensis Y. C. Hsu & H. W. Jen; Q. xizangensis (Y. C. Hsu & H. W. Jen) C. C. Huang & Y. C. Chang.

Trees to 30 m tall. Branchlets thick, densely lenticellate; lenticels brownish, raised. Petiole 1.5-2.5 cm, glabrous; leaf blade oblong-elliptic, 10-18 × 3.5-8.5 cm, leathery, abaxially whitish, and loosely covered with simple hairs, base rounded to broadly cuneate, margin apical 1/2 with awnlike and incurved serrations, apex shortly acute, acuminate, or caudate; midvein and secondary veins abaxially prominent but adaxially impressed; secondary veins 10-13 on each side of midvein, tertiary veins abaxially slender, evident to conspicuous, parallel. Infructescence ca. 3.5 cm; rachis ca. 4 mm thick. Cupule saucer-to bowl-shaped, 1.2-1.5 × 1.8-2.2 cm, enclosing to 1/2 of nut, outside tomentose, inside whitish sericeous, wall 1.5-3 mm thick; bracts in 6-9 rings, yellowish brown tomentose, margin of basal ones loosely dentate but apical ones entire. Nut globose, ovoid, or conical, 1.5-1.7(-3) × 1.4-1.7 cm, glabrous; scar ca. 8 mm in diam., convex; stylopodium persistent, conspicuous, 3-ringed. Fr. Aug-Sep.

* Mixed mesophytic forests in mountains; 1300-2000 m. Xizang, NW Yunnan