Quercus chrysolepis (shrub) Shrubland Alliance
Canyon live oak chaparral

USDA Ecological Section Map

Summary Information

  • Primary Life FormShrub
  • Elevation1000-2200 m
  • State RarityS3
  • Global RarityG3
  • DistributionUSA: CA. Mexico (NatureServe)
  • Endemic to CaliforniaNo
  • Endemic to California Floristic Province and DesertsNo
  • Date Added1995/11/01

Characteristic Species

Quercus chrysolepis is dominant or co-dominant in the shrub canopy with Ceanothus cuneatus, Ceanothus integerrimus, Ceanothus leucodermis, Quercus berberidifolia, Quercus wislizeni, Toxicodendron diversilobum and Umbellularia californica.

Vegetation Layers

Shrubs < 6 m; canopy is continuous or intermittent. Herbaceous layer is variable.

Membership Rules

  • Quercus chrysolepis shrubs > 50% relative cover in the shrub canopy (Gordon and White 1994).


Commonly found on north-facing upper- or mid-slopes. Soils are rocky.

Other Habitat, Alliance and Community Groupings

MCV (1995) Canyon live oak shrub series
NVCS (2009) Quercus chrysolepis shrubland alliance
Calveg Scrub oak, Upper montane mixed chaparral
Holland Interior live oak chaparral, Southern north slope chaparral
Munz Chaparral
WHR Mixed chaparral
CDFW CA Code 37.413.00

National Vegetation Classification Hierarchy

Formation Class Mesomorphic Shrub and Herb Vegetation (Shrubland and Grassland)
Formation Subclass Mediterranean Scrub and Grassland
Formation Mediterranean Scrub
Division California Scrub
Macro Group California Chaparral
Group Californian pre-montane chaparral