Oaks of the World

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  Quercus schottkyana
Author Rehd. & Wils. in Sarg. 1916
Synonyms Cyclobalanopsis glaucoides Schottky 1912
glauca subsp schottkyana (Rehd. & Wils.) Menitsky 1976
glaucoides (Schottky) Koidz.
1916, not Mart. & Gal. 1843
Local names dian qing gang ;
Range SW China (Guizhou, Sichuan, Yunnan) ; 1500-2800 m
Growth habit reaches 20 m tall; often shrub to 5-6 m ;
Leaves 8-14 x 3.5-5 cm; elliptic to obovate-oblanceolate; leathery, thick; apex caudate to acuminate; base slightly cuneate or almost round; margin apical 2/3 toothed; smooth, green, glabrous above; glaucous, tawny tomentose beneath along veins; midrib raised under; 8-12 vein pairs; tertiary veins conspicuous beneath; petiole 0.5-2 cm long;
Flowers May; pistillate inflorescences 2 cm long, bearing 8-14 cups;
Fruits acorn 1.2 cm in diameter, ovoid; pubescent at first, then glabrescent; enclosed 1/3 or 1/2 by cup; cup hairy outside and inside, 6-8 mm long, 8-12 mm wide, pale brown, with 6-8 concentric rings marginally subentire; scar 5-6 mm wide, convex; stylopodium persistent, short; maturing in 1 year;

Bark, twigs and
buds

twigs greenish or brown, tomentose, then glabrescent;
Hardiness zone, habitat not quite hardy (zone 8); broad-leaved evergreen forests in mountains; prefers calcareous soils;
Miscellaneous -- A. Camus : n° 51 ;
-- Sub-genus Cyclobalanopsis;
-- One should not confuse Q.glaucoides (Schottky) Koidz. 1916 with Q.glaucoides Mart. & Gal. which is a Mexican species;
Subspecies and
varieties
 
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