Quercus agrifolia


Anales Ci. Nat. 3: 271. 1801.

Common names: Coast live oak
Synonyms: Quercus acroglandis Kellogg Quercus agrifolia var. oxyadenia (Torrey) J. T. Howell Quercus pricei
Treatment appears in FNA Volume 3.

Trees, evergreen, to 25 m. Bark gray to dark brown or black, ridges broad, rounded. Twigs brown to red-brown, 1.5-3 mm diam., with scattered pubescence or uniformly pubescent. Terminal buds light chestnut brown, ovoid, occasionally subconic, 3-6(-7) mm, glabrous except for cilia along scale margins. Leaves: petiole 4-15(-18) mm, sparsely to densely pubescent. Leaf blade broadly elliptic to ovate or oblong, 15-75 × 10-40 mm, base rounded or cordate, margins entire or spinose, with up to 24 awns, apex blunt to attenuate; surfaces abaxially glabrous or with small axillary tufts of tomentum, veins raised, adaxially distinctly convex, rugose, glabrous, occasionally densely uniformly pubescent. Acorns annual; cup turbinate to cup- or bowl-shaped, rarely saucer-shaped, 9-13 mm high × 9-15 mm wide, covering 1/4-1/3(-1/2) nut, outer surface glabrous to sparsely puberulent, inner surface pubescent on innermost 1/3 to uniformly pubescent, scales acute, tips loose; nut ovoid to oblong or conic, 15-35 × 10-15 mm, glabrous, scar diam. 3.5-8 mm. 2n = 24.

Phenology: Flowering early to mid spring.
Habitat: Moderately dry sites
Elevation: 0–1400 m


V3 368-distribution-map.gif

Calif., Mexico (Baja California).


Quercus agrifolia is found in the Coast Ranges from Sonoma County, California, south to Baja California. Plants with densely pubescent leaves, especially abaxially, have been treated as Q. agrifolia var. oxyadenia.

This species reportedly hybridizes with Quercus kelloggii and Q. wislizenii.

The Mahuna used Quercus agrifolia medicinally to heal the bleeding navel of a newborn (D. E. Moerman 1986).

Selected References


Lower Taxa

... more about "Quercus agrifolia"
Kevin C. Nixon +
Coast live oak +
Calif. +  and Mexico (Baja California). +
0–1400 m +
Moderately dry sites +
Flowering early to mid spring. +
Anales Ci. Nat. +
Illustrated +
Quercus acroglandis +, Quercus agrifolia var. oxyadenia +  and Quercus pricei +
Quercus agrifolia +
Quercus sect. Lobatae +
species +