印度栲 yin du zhui

Castanea indica Roxburgh ex Lindley in Wallich, Pl. Asiat. Rar. 2: 5. 1830; Castanopsis macrostachya Hu; C. sinensis A. Chevalier; C. subacuminata Hayata; Quercus indica (Roxburgh ex Lindley) Drake.

Trees; young shoots, petioles, leaf blades abaxially, and rachis of inflorescences yellowish brown puberulent. Petiole 5-10(-15) mm; leaf blade ovate-elliptic, elliptic, or sometimes obovate-elliptic, 9-20 × (4-)6-10 cm, thickly papery, abaxially puberulent or glabrescent, base cuneate to rounded and usually inaequilateral, margin serrate except basally entire, apex mucronate to acuminate; midvein adaxially impressed; secondary veins 15-25 on each side of midvein. Female inflorescence ca. 40 cm. Infructescences dense, 10-27 cm. Cupule globose, 3.5-4 cm in diam., usually splitting into 4 segments when mature, wall ca. 1 mm thick; bracts spinelike, entirely covering cupule, to 1.5 cm, straight or bent, base connate into bundles. Nut 1(or 2) per cupule, broadly conical, 1-1.4 cm in diam., densely hairy; scar covering ca. 1/4 of nut. Fl. Mar-May, fr. Sep-Nov of following year.

Broad-leaved evergreen forests; below 1500 m. S Guangdong, S Guangxi, S Hainan, Taiwan, SE Xizang (Mêdog Xian), S Yunnan [Bangladesh, Bhutan, NE India, Laos, Myanmar, Nepal, Sikkim, Thailand, Vietnam]