Oaks of the World

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  Quercus delavayi
Author Franch. 1899 J. Bot. (Morot) 13: 158
Synonyms Cyclobalanopsis delavayi (Franchet) Schottky 1912
gilva Skan not Bl.
Local names huang mao qing gang ;
Range China (Yunnan, Sichuan, Guizhou, Guangxi, Hubei) ; 1000 - 3000 m ;
Growth habit 10-30 m tall;
Leaves 8-10 x 3-4.5 cm; oblong to oval-elliptic; shortly acuminate at apex; base cuneate or almost rounded; leathery, thick; margin rarely sinuate, dentate on apical 1/2; glabrous above, densely whitish tomentose beneath with stellate hairs; midrib impressed above, prominent below; 10-14 vein pairs raised beneath; petiole 1-2.5 cm, densely tomentose;
Flowers April to May; female inflorescences axillary, singly, densely tomentose, 4 cm long, with 2-3 fruits; styles connate only at their base;
Fruits acorn globose to ovoid, 1.4 cm in diameter; pointed; glabrescent; enclosed 1/2 by cup; cup rather thin, 1.6 cm in diameter, scales in 6-7 concentric rings with margin denticulate; maturing in 2 years;

Bark, twigs and

bark grey brown; young shoots pale brown tomentose;
Hardiness zone, habitat in mixed forests, with Pinus;

-- A. Camus : tome 1, p. 253, n° 36;
-- Sub-genus Cerris, Section Cyclobalanopsis;
-- Section Gilva (Menitsky);
-- Close to Q.glauca (but differs in having branchlets tomentose);


Subspecies and

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