Quercus yonganensis L. Lin & C. C. Huang in C. C. Huang, Guihaia 11: 10. 1991.

Trees to 20 m tall. Branchlets purplish brown, thick. Petiole 2.5-4 cm; leaf blade lanceolate to oblong, 13-18 × 4-6 cm, thickly papery, concolorous when young, abaxially glabrous but glaucous with age, base ± truncate to somewhat auriculate, margin serrulate, apex acuminate; midvein adaxially impressed; secondary veins 14-17 on each side of midvein; tertiary veins reticulate. Infructescence rachises basally ca. 5 mm thick. Cupule funnelform, 0.6-1.2 × 1.4-1.8 cm; bracts in 6 or 7 rings, margin of basal 2 or 3 rings irregularly denticulate but others entire, outside yellowish brown pilose and with scalelike trichomes, inside densely yellowish brown appressed tomentose. Nuts ovoid-ellipsoid to appressed orbicular, 1.2-1.8 × 1.4-1.8 cm; scar 6-11 mm in diam.

* Forests and forest margins in mountains; 1000-1400 m. Fujian (Yong’an Xian)