Print Report

CEGL003603 Ceanothus oliganthus Shrubland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Hairy Ceanothus Shrubland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This shrubland association occurs on gentle to steep slopes of variable aspect at low to mid elevations between 498 and 847 m. It is characterized by a strong dominance of Ceanothus oliganthus in the shrub layer, although a variety of other shrubs may occur occasionally at low cover. The emergent tree layer occasionally includes Quercus agrifolia and Umbellularia californica.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: Klein and Evens (2006), Evens and San (2006), and Borchert et al. (2004) have reported on stands of Ceanothus oliganthus that resemble these relatively pure stands in the Santa Monica Mountains study area. However, they have not had sufficient numbers of stands to further differentiate their examples at the association level. Recent sampling in the Peninsular Ranges of San Diego County (T. Keeler-Wolf pers. obs. 2005) suggests there are other early-seral post-fire Ceanothus oliganthus associations which may occur in mixed coniferous forests up to 1800 m in association with emergent Quercus chrysolepis and Pinus coulteri.

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

Physiognomy and Structure: No Data Available

Floristics: This association has only been described from the Santa Monica Mountains National Recreation Area. Until further inventory is completed, there is no global information.

Dynamics:  No Data Available

Environmental Description:  This association has only been described from the Santa Monica Mountains National Recreation Area. 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. It is likely to occur in a number of areas from Monterey County to San Diego County but has not been adequately treated at the association level to determine its full extent.

Nations: US

States/Provinces:  CA




Confidence Level: Moderate

Confidence Level Comments: No Data Available

Grank: G4

Greasons: No Data Available


Concept Lineage: The provisional/placeholder CEGL003032 has been replaced with several new types: CEGL003603, CEGL003605, CEGL003610, and CEGL003611.

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Ceanothus oliganthus (Sawyer et al. 2009) [37.207.01]
= Ceanothus oliganthus Shrubland (Borchert et al. 2004)
= Ceanothus oliganthus Shrubland (Evens and San 2006)
= Ceanothus oliganthus Shrubland (Klein and Evens 2006)
= Ceanothus oliganthus Shrubland Association (Keeler-Wolf and Evens 2006)

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

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

Acknowledgements: No Data Available

Version Date: 12-14-05

  • Borchert, M., A. Lopez, C. Bauer, and T. Knowd. 2004. Field guide to coastal sage scrub and chaparral series of Los Padres National Forest. Report R5-TP-019. USDA Forest Service, Pacific Southwest Region, San Francisco, CA.
  • Evens, J., and S. San. 2006. Vegetation alliances of the San Dieguito River Park region, San Diego County, California. Final report (August 2005) Version 2 (revised May 2006). Prepared by California Native Plant Society in cooperation with the California Natural Heritage Program of the California Department of Fish and Game and San Diego Chapter of the California Native Plant Society. Sacramento, CA. 271 pp.
  • 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.
  • Klein, A., and J. Evens. 2006. Vegetation alliances of western Riverside County, California. Contract Number: P0185404. Final report prepared for The California Department of Fish and Game, Habitat Conservation Division. California Native Plant Society, Sacramento, CA. 332 pp. [http://www.dfg.ca.gov/biogeodata/vegcamp/pdfs/VegMappingRpt_Western_Riverside.pdf]
  • 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.