General data | Classifications | List of species | Local names | Back to home page |
Quercus obconica | |
Author | Y.C.Hsu & Z.K.Zhou 1998 Acta Bot. Yunnan. 20: 43 |
Synonyms | Cyclobalanopsis macrocalyx var. litoralis
(Hsu & Jen) M.Deng & Z.K.Zhou 2005 Cyclobalanopsis litoralis Chun & Tam ex Hsu & Wei Jen 1979 hainanica Huang & Chang 1982, nom. inval. |
Local names | jian
feng qing gang ; |
Range | China
(Hainan); 700-900 m ; |
Growth habit | reaches
15 m tall, trunk to 0,4 m in diameter; |
Leaves | 8-15
x 4-10 cm; ovate to obovate ; leathery; apex obtuse or shortly pointed;
base cuneate; margin entire or weakly denticulate near apex; greyish green
beneath, tomentose at first then hairless; 6-9 curved vein pairs
slightly raised above, as for the midrib; tertiary veins inconspicuous
abaxially; petiole 2.5-5 cm, densely tomentose at first; |
Flowers | March
to May; pistillate inflorescences 2-3 cm long, at axil of terminal leaves;
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Fruits | acorn
3-4.5 cm long, 2.2-2.8 cm wide, ovoid to cylindrical; apex rounded to
deprimate; 3 to 5 together; enclosed 1/2 or 1/3 by cup; cup 3-5 mm thick,
2-3 cm high, 2.5-3 cm wide, tomentose outside, silky inside, with 9-12
concentric rings; basal rings always entire, others may be dentate; maturing
in 2 years from October to December; |
Bark, twigs and |
bark
greyish brown; twigs thick, at first densely tomentose, becoming glabrous,
with small raised lenticels; |
Hardiness zone, habitat | not hardy; |
Miscellaneous |
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Sub-genus Cerris, Section Cyclobalanopsis; |
Subspecies and varieties |
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Pictures | drawing |