靖西青冈 jing xi qing gang

Quercus chingsiensis Y. T. Chang, Acta Phytotax. Sin. 11: 258. 1966.

Trees to 15 m tall. Branchlets reddish brown, densely verrucose; lenticels brownish, elevated. Petiole slender, 1.5-2 cm; leaf blade broadly oblong-elliptic, 8-10 × 3-5 cm, subleathery, abaxially with an indument of fine yellowish brown stellate hairs when young but glabrescent, adaxially glabrous and shiny when dry, base obtusely rounded and oblique, margin subspinulose-serrate ± apically from middle, apex shortly acuminate; midvein basally canaliculate on adaxial surface; secondary veins 11-13 on each side of midvein. Cupules woody, saucer-shaped, ca. 1 × 3-3.5 cm, margin introrse, outside grayish yellow tomentulose, inside densely sericeous-tomentose, wall ca. 3 mm thick; bracts in ca. 8 rings, margin subentire. Nut strongly depressed semiglobose, ca. 7 mm × 2.5 cm, densely puberulent, apex slightly concave; scar subconvex, ca. 2.2 cm in diam.; stylopodium conically rostrate.

* Guangxi (Jingxi Xian), SW Guizhou