厚斗柯 hou dou ke

Quercus elizabethiae Tutcher, J. Bot. 49: 273. 1911; Pasania elizabethiae (Tutcher) Schottky; Synaedrys elizabethiae (Tutcher) Kudo.

Trees 9-15 m tall; branches and leaf blades glabrous. Petiole 1-2 cm; leaf blade narrowly oblong to lanceolate, 9-17 × 2-4 cm, thickly papery, concolorous to ± glaucous abaxially, base cuneate and decurrent on petiole, margin entire, apex acuminate; secondary veins 13-16 on each side of midvein, slender, evident; tertiary veins abaxially inconspicuous. Male inflorescences 3-many in a panicle, sometimes solitary in axils of leaves; rachis sparsely pubescent. Female inflorescences 2-4 congested at apex of branches; cupules usually in clusters of ca. 3. Infructescence rachis 4-6(-10) mm thick. Cupule subglobose, 1.5-3 × 1.5-2.8 cm, usually enclosing nut, apically abruptly narrowed and slightly elongated into a nipple, wall apically ca. 2 mm thick and basally to 4 mm thick; bracts imbricate, broadly triangular to rhomboid, apical ones incurved. Nut depressed globose to subglobose, 1.4-2.4 cm in diam., wall ca. 1 mm thick; scar 1.3-1.6 cm in diam., concave. Fl. Jul-Sep, fr. Aug-Nov of following year.

* Mixed mesophytic forests, frequent in moist places; 100-1200 m. SW Fujian, Guangdong, Guangxi, SE Guizhou, SE Yunnan