Oaks of the World

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  Quercus x acutidens
Author Torr. 1858 Rep. U.S. Mex. Bound. 2(1): 207 1858.
Synonyms cornelius-mulleri X engelmannii (for Nixon & Steele, 1980)
= dumosa var. acutidens (Torr.) Wenzig 1885
= macdonaldii var. elegantula Greene
= dumosa var. elegantula (Greene) Jepson
Local names
Range American mainland, in front of California Channel Islands (San Luis Rey, San Diego County), at less than 1600m above sea level;
Growth habit Small shrub less than 6-10 m tall
Leaves 2-6 cm, evergreen, oboval, margin wavy more than toothed, light dull green and glabrous above, hairy beneath but becoming glabrous when older, with petiole 3- 7 mm;
Fruits acorn 2-2.5 cm, enclosed in warty cup, maturing in 1 year; cotyledons sometimes connate;

Bark, twigs and

Hardiness zone, habitat

-- Sub-genus Quercus, section Quercus, sub-section Dumosae;
-- Resembles Q.berberidifolia, but leaves variable, thicker and more leathery, more tomentose beneath;

Subspecies and