| Quercus chapensis | |
| Author | Hickel & A.Camus 1923 Bull. Mus. Natl. Hist. Nat. 29: 598 1923. |
| Synonyms | Cyclobalanopsis
chapensis (Hick. & A.Camus) Hsu & Wei Jen 1976 Cyclobalanopsis koumeii Hu 1951 Cyclobalanopsis shiangpyungensis Hu 1951 |
| Local names | bian guo qing gang ; |
| Range | China (S and
SE Yunnan); Vietnam; 1400 - 2000 m; |
| Growth habit | 15-20 m ; reaches 25 m with a trunk to 1,8 m in diametre; |
| Leaves | 12-16(20) x 3-5 cm; oblong-lanceolate, lanceolate or sub-elliptic; flat, leathery; glabrous and smooth above; adult partialy glabrous, whitish beneath; apex acuminate, base broadly cuneate to almost rounded; margin serrulate on apical 2/3; midrib and 15-20 lateral veins prominent beneath and slightly raised above, at an angle of 40° with midrib; tertiary veins evident abaxially; petiole 1-2.5 cm, glabrous; |
| Flowers | male catkin hairy 6-7 cm long; pistillate catkin 2-5 mm long; |
| Fruits | acorn 1-2.2
cm high, 1.5-2.7 cm in diameter; brown, weakly mucronate, apex rounded
or slightly depressed, scar flat or depressed, 1.5- cm wide; enclosed
1/4 by cup; cup very shallow (0.5-1.2 cm long, 2.5-3.5 cm wide), thick
(3-5 mm), silky inside, tomentose outside, with 6-9 concentric rings marginally
denticulate; maturing first year; |
|
Bark, twigs and |
bark
pale greyish; twigs sulcate, villous when young, with long, brownish lenticels;
|
| Hardiness zone, habitat | broad-leaved
evergreen forests in wet mountain valleys; a little tender; prefers clayey
soils; |
| Miscellaneous | --
A. Camus : tome 1, p. 320, n° 62; -- Sub-genus Cerris, Section Cyclobalanopsis; -- Section Semiserrata, sub-section Chapensis (Menitsky). |
| Subspecies and varieties |
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| Pictures |
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