小叶青冈 xiao ye qing gang

Quercus myrsinifolia Blume, Mus. Bot. 1: 305. 1850; Q. bambusifolia Fortune.

Trees to 20 m tall. Branchlets glabrous, lenticellate; lenticels grayish brown, oblong, convex. Petiole 1-2.5 cm, glabrous; leaf blade ovate to elliptic-lanceolate, 6-11 × 1.8-4 cm, abaxially whitish farinose but dark gray when dry, adaxially green and glabrous, base cuneate to subrounded, margin apical 1/2 serrulate, apex acuminate to shortly caudate; secondary veins 9-14 on each side of midvein, usually almost reaching margin but not fusing; tertiary veins abaxially inconspicuous. Female inflorescences 1.5-3 cm. Cupule cupular, 5-8 mm × 1-1.8 cm, enclosing 1/3-1/2 of nut, outside whitish pubescent, inside glabrous, wall less than 1 mm thick; bracts in 6-9 rings, margin entire. Nut ovoid to ellipsoid, 1.4-2.5 × 1-1.5 cm, glabrous, apex rounded; scar ca. 6 mm in diam., flat; stylopodium conspicuous, 5- or 6-ringed. Fl. Jun, fr. Oct.

Mixed mesophytic forests in mountain valleys; 200-2500 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Henan, Hunan, Jiangsu, Jiangxi, Shaanxi, Sichuan, Taiwan, Yunnan, Zhejiang [Japan, Korea, Laos, N Thailand, Vietnam]

The occurrence of Cyclobalanopsis myrsinifolia in Taiwan as a native, rather than an introduced and cultivated species, is uncertain.