| Quercus thorelii | |
| Author | Hickel & A.Camus 1923 Bull. Mus. Natl. Hist. Nat. 29: 599 |
| Synonyms | subhinoidea Chun & W.C. Ko 1958 Cyclobalanopsis subhinoidea (Chun & W.C. Ko) Y.C. Hsu & H.W. Jen 1996 hsiensiui Chun & W.C. Ko 1958 chingsiensis Y T.Chang 1966 Cyclobalanopsis chingsiensis (Chang) Chang 1996 |
| Local names | hou
yuan qing gang ; |
| Range | China (South
Guangxi, South Yunnan); Laos; Vietnam; 1000 - 1100 m ; |
| Growth habit | 10 m usually,
but may reach 30 m; trunk to 1,5 m in diameter; |
| Leaves | 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; |
| Flowers | April; 4
short styles; |
| Fruits | 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; |
|
Bark, twigs and |
bark
grey, rough; twigs sulcate, densely stellate hairs tomentose when young,
becoming hairless, with raised, small, whitish lenticels; |
| Hardiness zone, habitat | not
hardy; evergreen broad-leaved forests, in topical mountain valleys; |
| Miscellaneous | --
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; |
| Subspecies and varieties |
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| Pictures |
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