Species

Quercus sessilifolia Blume

LC

Synonyms (3)

changii nubium paucidentata
Data from Oaks of the World

Geographic Range

South and Central China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Zhejiang); Taiwan; South Japan; 1000-1700 m;

Growth Habit

small tree, reaching sometimes 20 m tall; trunk to 0.6 m in diameter;

Leaves

6-15 x 1.5-4 cm; elliptic, oblong-elliptic to obovate-oblong; leathery; apex shortly acuminate; base obtuse or cuneate; margin entire or with 3-4 serrations towards apex; hairless on both sides; nearly concolorous; midrib impressed adaxially; 10-14 vein pairs inconspicuous; short petiole hairless, not sulcate, 5-10 mm long;

Flowers

April-May; male catkin 5-9 cm long, with short stamens; pistillate inflorescences 4-9 cm long;

Fruits

acorn 1.7-2.4 cm long, 0.8-1.5 cm in diameter; obovoid to ellipsoid-obovoid; basal scar narrow, 5-7 mm wide, slightly convex; enclosed 1/3 or 1/2 by cup; cup thin, tomentose, 1-1.5 cm wide, with 5-7 concentric rings of scales; margin of 2 or 3 rings near base denticulate; stylopodium persistent; maturing in 1 year in October-November;

Common Names

yun shan qing gang

Hardiness & Habitat

hardy zone 7-8; mixed mesophytic forests in mountains;

Additional Information

– Sub-genus Cerris, Section Cyclobalanopsis; – Section Acuta ( Menitsky ) – Hybrid with Q.acuta = Q.x takaoyamensis Makino;

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