Oaks of the World

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  Quercus poilanei
Author Hickel & A.Camus 1921
Synonyms Cyclobalanopsis poilanei (Hickel & A.Camus) Hjelmquist 1968
flavescens Hickel & A.Camus 1923 (A.Camus = n° 32)
Local names huang bei qing gang ;
Range Vietnam; China (Guangxi); N Thailand; below 1300 m ;
Growth habit 8-16 m tall; trunk to 0,6 m in diameter;
Leaves 4-8 x 3.6 cm; oval-lanceolate; apex acuminate to shortly caudate; base broadly cuneate; margin entire or sometimes with few small teeth towards apex; young leaves tawny stellate tomentose; dark green above, glabrescent; yellow stellate tomentose beneath; 7-12 vein pairs, impressed upside, prominent below; petiole 1-1.5 cm long, tomentose at first, glabrescent;
Flowers April; pistillate inflorescences 5 cm long, bearing 3-10 flowers; female flowers with 3 bilobed styles; 
Fruits acorn 1-1.5 cm in diameter, globose; apex mucronate, slightly depressed; enclosed 1/4 to 1/3 by cup; cup 0.8 cm long, 1.6 cm in diameter, golden tomentose inside and outside, 1.8 mm thick, with 5-7 concentric rings marginally denticulate or entire; scar flat, 5-7 mm wide; maturing in 2 years;

Bark, twigs and
buds

bark grey, rough; twig light orangish brown tomentose, then glabrescent;
Hardiness zone, habitat not hardy; subtropical broad leaved evergreen forests;
Miscellaneous -- A. Camus : n° 31;
-- Sub-genus Cyclobalanopsis;
-- Section Lepidotricha (Menitsky);
Subspecies and
varieties
 
Pictures

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