25. Cyclobalanopsis lamellosa (Smith) Oersted, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn. 1866: 79. 1867.
薄片青冈 bao pian qing gang
Quercus lamellosa Smith in Rees, Cycl. 29: Quercus no. 23. 1814; Cyclobalanopsis fengii Hu & W. C. Cheng; C. lamelloides (C. C. Huang) Y. T. Chang; C. nigrinervis Hu; Q. lamelloides C. C. Huang.
Trees to 40 m tall. Branchlets tawny tomentose, glabrescent. Petiole 2-4 cm; leaf blade ovate-elliptic, 16-30(-39) × 6-8(-10) cm, leathery, abaxially pruinose or with pale brown, shortly stellate hairs and sometimes glabrescent, adaxially green and glabrous, base cuneate to subrounded, margin serrate or entire on basal 1/3, apex acuminate to caudate; midvein and secondary veins abaxially prominent but adaxially impressed; secondary veins 18-25(-33) on each side of midvein; tertiary veins abaxially conspicuous. Infructescences usually with 1-3 fruit. Cupule oblate to semiglobose, 2-3 × 3-5 cm, enclosing 2/3-4/5 or sometimes all nut, outside and inside orangish tomentose, wall 2-5 mm on sides and 3-8 mm at base; bracts in 7-10 rings, thinly lamellate, margin subentire but denticulate when ripe. Nut oblate, 2-3 × 3-4 cm, tomentose, glabrescent, apex flat, rounded, or umbonate; scar 2-3 cm in diam., flat to slightly convex; stylopodium persistent, ca. 5 mm in diam. Fl. Apr-May, fr. Nov-Dec.
Mixed mesophytic forests in mountains; 1300-2500 m. W Guangxi, Xizang, Yunnan [Bhutan, NE India, N Myanmar, Nepal, Sikkim, N Thailand]