Print Report

CEGL002862 Quercus agrifolia / Ceanothus spinosus Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: California Live Oak / Redheart Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This association is only known from the Santa Monica Mountains region. This woodland association occurs on gentle to steep north-facing slopes at low elevations between 136 and 517 m. It is dominated by Quercus agrifolia in the tree layer, Ceanothus spinosus in the understory shrub layer, and a variety of grasses and forbs in the herbaceous layer.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: Stands of this association at Santa Monica Mountains National Recreation Area form an open to continuous tree layer (12-78%, mean 24.7%) with hardwoods at 5-15 m tall, a sparse to intermittent shrub layer (0-55%, mean 34.2%) at 0-10 m tall, and a sparse to intermittent herbaceous layer (0-35%, mean 4.3%) at 0-1 m tall. Total vegetation cover is 41-78%; mean cover is 60.3%. In this association, the tree layer is dominated by Quercus agrifolia. Juglans californica is occasionally included in this layer. The shrub layer is sparse to intermittent and is dominated by Ceanothus spinosus. Heteromeles arbutifolia and Diplacus aurantiacus (= Mimulus aurantiacus) are often included. The herbaceous layer is diverse and includes Leymus condensatus, Melica imperfecta, Dryopteris arguta, and Marah macrocarpus.

Dynamics:  Until further inventory is completed, there is no global information.

Environmental Description:  Until further inventory is completed, there is no global information.

Geographic Range: This association is only known from the Santa Monica Mountains region. Information about its global distribution is not available without additional inventory.

Nations: US

States/Provinces:  CA




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G3

Greasons: No Data Available


Concept Lineage: This placeholder has been replaced by several new types for SAMO.

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Quercus agrifolia / Ceanothus spinosus (Sawyer et al. 2009) [71.060.34]
= Quercus agrifolia/Ceanothus spinosus Woodland/Forest Association (Keeler-Wolf and Evens 2006)

Concept Author(s): Keeler-Wolf and Evens (2006)

Author of Description: T. Keeler-Wolf and J. Evens

Acknowledgements: No Data Available

Version Date: 11-08-05

  • Keeler-Wolf, T., and J. Evens. 2006. Vegetation classification of the Santa Monica Mountains National Recreation Area and environs in Ventura and Los Angeles counties, California. A report submitted to National Park Service, Santa Monica Mountains National Recreation Area by California Department of Fish and Game, Wildlife and Habitat Data Analysis Branch and The California Native Plant Society, Vegetation Program, Sacramento, CA.
  • Sawyer, J. O., T. Keeler-Wolf, and J. Evens. 2009. A manual of California vegetation. Second edition. California Native Plant Society, Sacramento CA. 1300 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.