Quercus fleuryi Hickel & A. Camus, Bull. Mus. Natl. Hist. Nat. 29: 600. 1923; Cyclobalanopsis austroyunnanensis Hu; C. nengpulaensis H. Li & Y. C. Hsu; Q. tsoi Chun ex Menitsky.

Trees to 25 m tall. Branchlets densely orangish brown tomentose, glabrescent and densely lenticellate. Petiole 2-6 cm, tawny tomentose when young; leaf blade oblong-elliptic to ovate-elliptic, 14-27 × 4-9 cm, leathery, densely orangish brown tomentose when young but glabrescent, abaxially whitish, base cuneate, margin entire or apically undulate and serrulate, apex acute to shortly acuminate; midvein adaxially slightly raised; secondary veins 10-12(-15) on each side of midvein; tertiary veins abaxially conspicuous. Male inflorescences 10-15 cm, tawny tomentose. Female inflorescence solitary in leaf axils toward apex of branchlets, 2.5-3.5 cm, rachis thick and densely orangish brown tomentose; cupules 4 or 5. Infructescence rachis short, ca. 7 mm thick, thicker than branchlet. Cupule campanulate to cylindric, 3-4 × 2.5-4 cm, enclosing ca. 2/3 of nut, outside and inside with feltlike orangish brown indumentum, wall to 6 mm thick; bracts in 10-13 rings, margin subentire. Nut cylindric-ellipsoid, 3-4.5 × 2-3 cm, densely tawny tomentose; scar ca. 1.2 cm in diam., convex; stylopodium persistent, 5-8 mm. Fl. Mar-Apr, fr. Oct-Dec.

Dense forests in mountains; 500-1500 m. Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hunan, Jiangxi, Yunnan [Laos, Vietnam]