Quercus thorelii Hickel & A.Camus

China (South Guangxi, South Yunnan); Laos; Vietnam; 1000 - 1100 m ;

10 m usually, but may reach 30 m; trunk to 1,5 m in diameter;

10-16 x 3.5-6 cm; oval to oblong-elliptic; leathery; apex acute to caudate; base broadly cuneate to rounded; margin toothed at apical 1/2 (sometimes to the base); both sides at first orangish tomentose, becoming hairless; concolorous, but slightly yellowish beneath; midrib raised adaxially; 13-22 vein pairs branched near margin; tertiary veins evident abaxially; petiole thin, glabrescent, 1-3 cm long;

April;  4 short styles;

acorn 1.4-1.6 cm long, 2-2.6 cm in diameter, flattened; densely pale brown tomentose; apex depressed, with a short, thick mucro; enclosed 9/10 by cup; cup 1.5-2 cm high, 3 cm in diameter, 2 mm thick, with 8-12 remotely toothed, finely pubescent concentric rings ; scar flat, 2 cm wide; maturing in 1 year;

not hardy; evergreen broad-leaved forests, in topical mountain valleys;

– A. Camus : tome 1, p. 347, n° 73; – Sub-genus Cerris, Section Cyclobalanopsis; – Section Helferiana, sub-section Helferianae ( Menitsky ); – Closely related to Q.kerrii (may be identical for Menitsky) – In Flora of China 2001, Q.chingsiensis is a true species, occuring in Guangxi and SO Guizhou; for Govaerts & Frodin, and for today’s Authors (Min Deng, Z.K. Zhou & A. Coombes) it is a synonym of Q.thorelii;