薄叶青冈 bao ye qing gang

Quercus saravanensis A. Camus, Chênes, Atlas 1: 19. 1934; Cyclobalanopsis kontumensis (A. Camus) Y. C. Hsu & H. W. Jen; Q. kontumensis A. Camus.

Trees to 50 m tall. Branchlets slender, sulcate, glabrous. Leaf blade ovate-elliptic to oblong-elliptic, 10-14 × 2.5-4.5 cm, papery, glabrous, abaxially grayish green, adaxially green, base cuneate, margin entire, apex caudate; midvein adaxially impressed; secondary veins (6-)9 or 10 on each side of midvein, inconspicuous. Cupule campanulate to obconic, ca. 1.5 × 2 cm, enclosing less than 1/2 of nut, outside gray villous, inside orangish tomentose, wall 1-2 mm thick; bracts in 8 or 9 rings, margin entire. Nut ellipsoid, 1.5-2 × 1.5-2 cm, glabrous; scar ca. 8 mm in diam., convex.

Wet forests in mountains; circa 1700 m. Yunnan [Laos, Vietnam]