澜沧栎 lan cang li

Trees to 12 m tall, evergreen. Branchlets of current year densely with yellowish gray stellate hairs, 2nd-year branchlets glabrous or sparsely hairy. Petiole 1-1.5 cm, densely yellowish brown tomentose; leaf blade narrowly elliptic, 7-11 × 3-5 cm, abaxially with yellowish gray stellate hairs, base nearly rounded to oblique, margin apical portion serrate, apex shortly acuminate to cuspidate; secondary veins 8-12 on each side of midvein, abaxially raised, adaxially inconspicuous; tertiary veins abaxially conspicuous. Infructescences ca. 1.5 cm; rachis with yellowish gray stellate hairs. Cupule campanulate, ca. 1.5 × 2 cm, enclosing more than 1/2 of nut, wall ca. 2 mm thick; bracts triangular-ovate, crowded, gray tomentose. Nut ellipsoid, ca. 2 × 1.5 cm, apex rounded; scar raised.

Mixed mesophytic forests; 800-1600 m. NW and SW Yunnan [Myanmar, N Thailand]