Oaks of the World

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 Quercus chrysolepis
AuthorLiebm. 1854
Synonymschrysolepis var. nana (Jepson) Jepson
chrysophyllus Kellogg 1855
crassipocula Torr. 1857
fulvescens Kellogg 1863
oblongifolia R.Br.ter 1871
wilcoxii Rydb. 1901
Local namescanyon oak ; maul oak; canyon live oak ; goldencup oak;
RangeMexico; Southwest United States; to 2700 m; introduced in Europe in 1877 by Ch. Sargent;
Growth habit6-20 m tall; short, broad trunk; crown rounded to spreading; shrubby at high elevations;
Leaves 1.4-5 x 1-3 cm; evergreen; elliptic; apex pointed, base rounded; margins slightly revolute, minutely dentate or sometimes entire; thick, leathery; shiny dark green above; when young with golden tomentum beneath, then becoming bluish-grey with some stellate and glandular hairs; 10-15 vein pairs; petiole yellowish 3-9 mm; rusty pubescent, flattened underside;
Flowersin April-May; 7-9 stamens;
Fruits acorn 2-4 cm, ovoid, blunt-tipped, singly or paired; cup sessile or nearly so, 1.5-4 cm wide, shallow, thick, tomentose inside, with pubescent, flat or warty scales sometimes covered with yellow tomentum (hence the name "golden cup oak"); maturing in 2 years;

Bark, twigs and

bark light grey, smooth or remotely scaly; young shoots furnished with orangish glandular hairs; branchlets reddish brown, tomentose, becoming blackish; bud conic, 2-8 mm long, with brown, ciliate scales;
Hardiness zone, habitathardy; prefers moist, well-drained soils; very slow growing;
Miscellaneous-- A. Camus : n° 293;
-- golden oak (= Sub-genus Quercus, section Protobalanus);
-- one of the most beautiful Californian oaks; wood hard, heavy; bearing flowers longer than other oaks; lives up to 300 years and more;
-- resembles
Q.cedrosensis, but the latter is shrubby and has small acorns;
Subspecies and
Q.vaccinifolia = see the file ;