Quercus × acutidens Torr.

American mainland, in front of California Channel Islands (San Luis Rey, San Diego County), at less than 1600m above sea level;

Small shrub less than 6-10 m tall

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;

acorn 2-2.5 cm, enclosed in warty cup, maturing in 1 year; cotyledons sometimes connate;

8a-10a;

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