Oaks of the World

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 Quercus argyrotricha
AuthorA.Camus 1931
Synonyms Cyclobalanopsis argyrotricha (A.Camus) Chun & Y.T.Chang ex Y.C.Hsu & H.Wei Jen 1993
Local namesgui zhou qing gang;
Range China (Guizhou) about 1600 m ;
Growth habittree to 10 m and more;
Leaves

6.5-12 cm long, 3-5 cm wide; leathery; oval to oboval-elliptic; long acuminate at apex; base oblique and rounded; dark, lustrous and glabrous above; silvery stellate tomentose beneath; margin denticulate at the end of the 9-14 pairs of secondary veins; midrib and secondary veins flat adaxially; tertiary veins inconspicuous on both sides; petiole 1-2 cm long, at first tomentose then becoming glabrous; bronze when young;

Flowers 
Fruits acorn mucronate, broadly ovoid or subglobose, 0.8-1.5 cm in diameter; solitary; densely, golden yellow hairy; sessile or on a short peduncle; enclosed for 1/2 in cupule 0.5-0.7 cm long, 1-1.6 cm in diameter, 2 mm thick, with 6-7(-9) concentric rings yellow hairy; rippening in 2 years;

Bark, twigs and
buds

twigs first yellow brown tomentose, becoming glabrous;
Hardiness zone, habitatbroad-leaved evergreen forests, on mountain slopes and in valleys; hardy zone 7-8;
Miscellaneous-- A. Camus : n° 79;
-- Subgenus Cyclobalanopsis;
-- closely related to
Q.oxyodon Miq.;
Subspecies and
varieties
 
Pictures

drawing