Oaks of the World

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  Quercus palmeri
Author Engelm. 1878 Trans. Acad. Sci. St. Louis 3: 393
Synonyms chrysolepis var. palmeri (Engelm.)Engelm. in Watson 1880
dunnii Kellogg ex Curran 1879
Local names Dunn oak ; Palmer's oak ;
Range United States (Arizona, California, Nevada, New Mexico, Utah); Mexico (Baja California); 1000-2400 m;
Growth habit reaches 5 m tall; often multiple trunks, looking like bush or thicket; stout, stiff branches;
Leaves 2-5 x 2-4 cm; persistent 3 years; elliptic or rounded; leathery; not convex; apex rounded; base rounded to sub-cordate; margin wavy, sometimes revolute, with 3-9 sharp teeth each side (among the spiniest of any oak species), seldom entire; grey green above, with fascicled erect and twisiting hairs; glaucous, waxy, minutely yellowish brown tomentose beneath; 5-8 vein pairs, prominent below; petiole 2-5 mm, round in cross section, pubescent or not;
Flowers April to July; 7-9 stamens;
Fruits acorn 2-3 cm long; oblong to spindle-shaped; pointed, mucronate; single or paired; enclosed 1/4 to 1/3 by cup; cup sessile or nearly so, thin, wider than nut, scales covered with orangish glandular hairs; maturing in 2 years, from August to October;

Bark, twigs and

bark grey brown, scaly; young shoots often covered with orangish glandular hairs, becoming dark grey, smooth, glabrous, stiff; 1.5-3 mm in diameter; buds glabrous, rounded at apex, brown, 1-1.5 mm long;
Hardiness zone, habitat not quite hardy (zone 7-8); prefers dry soils; produces thickets that are impenetrable by large mammals;
Miscellaneous -- A.Camus : n° 294;
-- Subgenus Quercus, section
-- Close to
-- Resembles
Q.cedrosensis that have less rounded, greener leaves, and conspicuous scales; resembles also Q.chrysolepis whose cup is not wider than nut, and Q.turbinella whose leaves are smaller, with stalked acorns;
-- No known hybrids;

Subspecies and