托盘青冈 tuo pan qing gang

Quercus patelliformis Chun, J. Arnold Arbor. 28: 241. 1947.

Trees to 15 m tall. Branchlets conspicuously angular when young; grayish brown, sparsely lenticellate by 2nd year, glabrous. Petiole 2-4.5 cm; leaf blade elliptic, oblong-elliptic, or ovate-lanceolate, 5-12 × 2.5-6 cm, leathery, abaxially grayish green and with stellate hairs when young but glabrescent, adaxially dark green, base cuneate to rarely subrounded and sometimes oblique, margin shortly and sharply serrate with serration somewhat incurved, apex acuminate; midvein adaxially flat; secondary veins 9-11 on each side of midvein; tertiary veins abaxially very slender, inconspicuous to evident. Female inflorescence 2-3 cm; cupules 3-5. Fruit solitary. Cupule shallowly cupular, 6-8 mm or rarely shallower, 2-3 cm in diam., enclosing ca. 1/3 of nut, outside pale grayish brown puberulent, inside pale orangish brown sericeous, wall ca. 3 mm thick; bracts in 8 or 9 rings, margin dentate but apical 2 or 3 entire. Nut oblate, 2-2.5 × 2.5-2.8 cm, grayish brown puberulent; scar 1.5-2 cm in diam., impressed or flat; stylopodium persistent, ca. 4 cm in diam. Fl. May-Jun, fr. Oct-Nov of following year.

* Wet broad-leaved evergreen forests in mountains; 400-1000 m. Guangdong, Guangxi, Hainan, S Jiangxi