3. Castanopsis cerebrina (Hickel & A. Camus) Barnett, Trans. & Proc. Bot. Soc. Edinburgh. 34: 183. 1944.
毛叶杯锥 mao ye bei zhui
Pasania cerebrina Hickel & A. Camus, Ann. Sci. Nat., Bot., ser. 10, 3: 408. 1921; Lithocarpus cerebrinus (Hickel & A. Camus) A. Camus.
Trees; young branchlets and leaf blades reddish brown, densely puberulent with simple and stellate hairs and covered with slightly loose, small, lamellate, waxy scalelike trichomes. Branchlets red-purple, prominently angular. Leaves spirally arranged, yellowish brown to gray; petiole 1-2.5 cm; leaf blade oblong to obovate-elliptic, often 15-25 × 5-9 cm, thickly papery, base cuneate, margin from base to middle undulate and crenate, apex acute, acuminate, or rounded; midvein adaxially raised; secondary veins 20-28 on each side of midvein or rarely fewer. Rachis of female inflorescences sparsely puberulent and covered with waxy scalelike trichomes. Cupule cupular, 1.8-2.2 × 1.5-2.5 cm, base stipitate, stipe 5-8 mm, wall 0.5-1 mm thick; bracts mound-shaped, arranged in disconnected rings, sparsely puberulent, covered with waxy scalelike trichomes. Nut narrowly conical, 2-2.5 × 1.4-2.2 cm, tomentulose, apex sometimes 3-angled; scar 0.8-1.2 cm in diam. Fl. Apr, fr. Oct.
Broad-leaved evergreen forests; 200-700 m. SE Yunnan [N Thailand, N Vietnam]