Oaks of the World

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  Quercus sadleriana
Author R.Br.ter. 1871 Ann. Mag. Nat. Hist. IV, 7: 249
Local names
Range SW Oregon; NW California (Siskiyou Mountains); often associate with Picea breweriana; to 2200 m ;
Growth habit 0.5-1 m tall, sometimes to 2.5 m; rhizomatous;
Leaves 8-13 x 4-5 cm; evergreen or nearly so; thick; apex acuminate; base rounded; margin toothed; dark green, glabrous above; pale green, bloomy, slightly hairy beneath (stellate hairs); 10-15 vein pairs, raised beneath; petiole hairless, yellow, 1.5-2.5 cm long;
Flowers spring;
Fruits acorn 1.7-2 cm long, 1.2-1.5 cm in diameter; ovoid; subsessile; enclosed 1/3 by cup; cup funnel-shaped, with grey, slightly warty scales; maturing in 1 year; cotyledons distinct;

Bark, twigs and

bark grey, smooth; twigs brown, bloomy, glabrous; buds scaly, yellowish, globose, 8-10 mm in diameter, with silky scales;
Hardiness zone, habitat hardy (zone 7); prefers acidic, moist soils;
Miscellaneous -- A. Camus : n° 188;
-- Sub-genus Quercus, section Ponticae;
-- Looks like Q.pontica;

Subspecies and