General data | Classifications | List of species | Local names | Back to home page |
Quercus delicatula | |
Author | Chun & Tsiang 1947 J. Arnold Arbor. 28: 324 |
Synonyms | Cyclobalanopsis delicatula (Chun & Tsiang) Y.C.Hsu & H.Wei Jen 1979 |
Local names | shang
si qing gang ; |
Range | China (Guangdong, Guangxi, Hunan), 300 - 700 m ; |
Growth habit | reaches
13 m high; |
Leaves | 6-9 x 2-3.5 cm; oblong-elliptic or sometimes oboval-elliptic; chartaceous; base cuneate, apex caudate; margin entire or slightly crenate near apex; 7-8 glabrescent vein pairs, slightly prominent beneath; petiole slender, hairless, 1-2 cm; |
Flowers | April-May; |
Fruits | acorn 2 cm long, 1.5 cm wide; ellipsoid; singly or paired; velutinous at least near rounded apex; enclosed 1/3 or 1/2 by cup; cup pubescent both inside and outside, 1.6 cm long, 1.8 cm wide, very thin, with 7-8 concentric rings denticulate near base; scar 5 mm wide; stylopodium persistent; matures in 1 year; |
Bark, twigs and |
young
shoots 2 mm thick, hairless; |
Hardiness zone, habitat | mixed forests in mountain; |
Miscellaneous | -- Sub-genus Cerris, Section
Cyclobalanopsis; -- Threatened (IUCN Red List Category : EN) |
Subspecies and varieties |
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Pictures | drawing |