谊柯 yi ke

Quercus listeri King, Ann. Roy. Bot. Gard. (Calcutta) 2: 89. 1889.

Trees to 15 m tall. Branchlets of current year sulcate, glabrous, dark brown when dry, sparsely lenticellate. Petiole 3-5 cm; leaf blade ovate-lanceolate to narrowly lanceolate, 20-35 × 8-12 cm, leathery, base cuneate, margin entire, apex acuminate; secondary veins 9-12 on each side of midvein; tertiary veins subparallel. Male inflorescences in a panicle, 2-3 cm; rachis densely pubescent. Female inflorescences with cupules in clusters of ca. 3; bracts of young cupules imbricate, ovate-triangular. Mature cupules unknown. Fl. Jun-Aug.

Broad-leaved evergreen forests; circa 1000 m. SE Xizang (Mêdog Xian) [Bhutan, NE India, NE Myanmar, Nepal]