| Quercus sessilifolia | |
| Author | Blume 1851 Mus. Bot. 1: 305 |
| Synonyms | Cyclobalanopsis
sessilifolia (Bl.) Schottky 1912 Cyclobalanopsis nubium (Hand.-Mazz.) Chun ex Zheng 1982 Cyclobalanopsis paucidentata (Franch. ex Nak.) Kudo & Masamune 1930 chingii F.P.Metcalf 1931 nubium Handel-Mazzetti 1922 (Camus n° 22 ) paucidentata Franchet ex Nakai 1926 |
| Local names | yun shan qing gang ; |
| 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; |
|
Bark, twigs and |
bark hard, fissured horizontally, greyish-brown; twig bloomy, glaucous, with hairy, grey brown, rounded lenticels; 1-2 cm long, conspicuous buds with scales hairy at margins; |
| Hardiness zone, habitat | hardy zone 7-8; mixed mesophytic forests in mountains; |
| Miscellaneous |
-- Sub-genus Cerris, Section Cyclobalanopsis; |
| Subspecies and varieties |
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| Pictures |
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