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CEGL002877 Umbellularia californica - Platanus racemosa Riparian Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: California Laurel - California Sycamore Riparian Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This association is only known from the Santa Monica Mountains region. This forest association occurs on gentle to steep slopes with variable aspects, at low elevations between 183 and 596 m. It is dominated by Umbellularia californica and Platanus racemosa in the tree layer. Ceanothus spinosus is abundant in the understory shrub layer, and a variety of grasses and forbs are found 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 a sparse to continuous tree layer (0-75%, mean 46.6%) with hardwoods at 5-15 m tall, an a sparse to intermittent shrub layer (0-40%, mean 9.5%) at 0-5 m tall, and a sparse herbaceous layer (0-10%, mean 1.6%) at 0-2 m tall. Total vegetation cover is 36-75%; mean cover is 56.7%. In this association, the tree layer is dominated by Umbellularia californica and Platanus racemosa. Juglans californica and Quercus agrifolia are frequently included in this layer. Ceanothus spinosus is abundant in the sparse to intermittent shrub layer. Heteromeles arbutifolia is frequently found in this layer. Occasionally, Toxicodendron diversilobum and Malosma laurina are also included. The herbaceous layer is simple and includes Leymus condensatus and Dryopteris arguta.

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. This association is likely to occur elsewhere in the south and central Coast Ranges north through Monterey County (T. Keeler-Wolf pers. obs.).

Nations: US

States/Provinces:  CA




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G3

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Umbellularia californica - Platanus racemosa (Sawyer et al. 2009) [74.100.13]
= Umbellularia californica-Platanus racemosa 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: 11-09-05

  • 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.