Leaf and influrescens are not drawn on same scale.
Quercus obconica (Y.C.Hsu & Z.K.Zhou 1998). Synonyms: Cyclobalanopsis litoralis (Chun and Tam ex Hsu &Wei Jen 1979), Cyclobalanopsis macrocalyx var. litoralis (Hsu and Jen), Deng &Z.K.Zhou 2005
Found in China (Hainan) where it eaches 15 meters tall. It is not hardy.
The leaves measure 8-15x4-10 centimeters with 6-9 curved vein pairs, abaxial inconspicuous tertiary veins; ovate to obovate; leathery; apex is obtuse or shortly pointed; cuneate base, entire margin or slightly denticulate near apex, greyish green beneath, tomentose then later glabrous.
Fruits: May be 3 to 5 together. Measure 3 to 4.5 centimeters L, 2.2 to 2.8 centimeters W, ovoid to cylindrical with rounded apex. Enclosed 1/2 or 1/3 by cup; 3-5 mm thick, 2-3 cm H by 2.5-3 cm W, tomentose outside and silky inside. 9-12 concentric rings, basal rings always entire while others may be dentate. It matures in 2 years from October to December.