| Quercus xanthotricha | |
| Author | A.Camus 1935 Chênes Atlas 2: 119 |
| Synonyms | Cyclobalanopsis xanthotricha (A.Camus)
Hsu & Wei Jen 1993 Cyclobalanopsis fuhsingensis (Chang) Chang ex Hsu & Wei Jen 1976 djiringensis A.Camus 1935 (A. Camus : n° 43) fuhsingensis Y.T.Chang 1966 |
| Local names | si
mao qing gang; |
| Range | China (Yunnan), Laos, Vietnam (Annam, district of Djirin) ; 800 - 1700 m ; |
| Growth habit | 5 to 8 m tall; |
| Leaves | 5-8 x 1.5-3
cm; narrowly elliptic to elliptic ; slightly leathery; apex acuminate;
base cuneate; margin serrulate towards apical 1/2; green above; bloomy,
whitish beneath; 8-10 vein pairs, thin, evident beneath; petiole pubescent,
5-10 mm long; |
| Flowers | male inflorescences
2-5 cm long; 3 short, free styles; |
| Fruits | acorn ovoid,
0.9-1.3 cm long, 0.7-1 cm in diameter; long stalk (to 4 cm long); enclosed
1/3 by obconic cup; cup 4-6 mm long, 6-10 mm wide, thin (less than 1 mm),
silky inside, puberulent outside, with 5-6 concentric rings slightly denticulate
; scar 4-6 mm wide, convex; stylopodium persistent, puberulent; maturing
in 2 years; |
|
Bark, twigs and |
twigs thin, dark purple, minutely sulcate, with rare, white, small lenticels; |
| Hardiness zone, habitat | not
hardy; in mixed mountain forests; |
| Miscellaneous | --
A. Camus : n° 50; -- Sub-genus Cerris, Section Cyclobalanopsis; -- Threatened (IUCN Red List Category : EN). |
| Subspecies and varieties |
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| Pictures |
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