Print Report
CEGL003557 Ceanothus crassifolius - Malosma laurina Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Hoaryleaf Ceanothus - Laurel Sumac Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This shrubland association occurs on somewhat steep to steep slopes of variable aspect at low elevations between 337 and 675 m. It is characterized by a dominance of Ceanothus crassifolius and subdominance of Malosma laurina in the shrub layer and an insignificant herbaceous layer. The emergent tree layer includes occasional Quercus agrifolia.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association is likely to be found in other parts of south coastal California at least as far south as the Mexican border.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Stands of this shrubland at Santa Monica Mountains National Recreation Area form an open to intermittent shrub layer (31-60%, mean 49.1%). Shrubs occur in two different strata, with low shrubs 0.5-2 m tall and tall shrubs 1-5 m tall. The herbaceous layer is open (0-10%, mean 2.1%) at 0-1 m tall. Trees are infrequently present. Total vegetation cover is 41-60%; mean cover is 51.1%. In this association, the shrub layer is characterized by Malosma laurina and Ceanothus crassifolius. Rhus ovata, Heteromeles arbutifolia, Adenostoma fasciculatum, Salvia mellifera, and Eriogonum fasciculatum are usually included in this layer. The tree layer is emergent and open and may include Quercus agrifolia at low cover. The herbaceous layer is simple and may include Marah macrocarpus, Phacelia parryi, Chaenactis artemisiifolia, and Pseudognaphalium biolettii (= Gnaphalium bicolor).
To supplement the above local description, the following information from Klein and Evens (2006) may be added: Ceanothus crassifolius dominates in the shrub layer, while Malosma laurina and Adenostoma fasciculatum are subdominant to codominant. Salvia mellifera and Heteromeles arbutifolia are characteristically present at low cover.
To supplement the above local description, the following information from Klein and Evens (2006) may be added: Ceanothus crassifolius dominates in the shrub layer, while Malosma laurina and Adenostoma fasciculatum are subdominant to codominant. Salvia mellifera and Heteromeles arbutifolia are characteristically present at low cover.
Dynamics: No Data Available
Environmental Description: A larger number of samples (n=23) of this association were taken from a recent study of the vegetation of western Riverside County (Klein and Evens 2006). A summary of the environmental setting there follows: Elevation is low and ranges from 228-889 m, with a mean of 524 m. All aspects (except flat) are found. Slopes are moderate to steep and range from 12-45°, with a mean of 29.1°. Topography is undulating or convex, lower to topslopes. Parent materials are more often metavolcanic, less often gabbro and diorite, sedimentary, Mesozoic granite. Soil texture is often medium to very fine sandy loam but varies from coarse loamy sand to moderately fine silty clay loam.
Geographic Range: This association is known from the Santa Monica Mountains and western Riverside County regions. Information about its global distribution is not available without additional inventory.
Nations: MX?,US
States/Provinces: CA, MXBCN?
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.789934
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G4
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.B Temperate & Boreal Grassland & Shrubland Subclass | S18 | 2.B |
| Formation | 2.B.1 Mediterranean Scrub & Grassland Formation | F038 | 2.B.1 |
| Division | 2.B.1.Na Californian Scrub & Grassland Division | D327 | 2.B.1.Na |
| Macrogroup | 2.B.1.Na.1 Chamise - Whiteleaf Manzanita - Scrub Oak Chaparral Macrogroup | M043 | 2.B.1.Na.1 |
| Group | 2.B.1.Na.1.a Chamise - Buckbrush - Sticky Whiteleaf Manzanita Xeric Chaparral Group | G257 | 2.B.1.Na.1.a |
| Alliance | A3864 Hoaryleaf Ceanothus - Bigpod Ceanothus Chaparral Alliance | A3864 | 2.B.1.Na.1.a |
| Association | CEGL003557 Hoaryleaf Ceanothus - Laurel Sumac Shrubland | CEGL003557 | 2.B.1.Na.1.a |
Concept Lineage: The provisional/placeholder CEGL003024 has been replaced with new types CEGL003552 and CEGL003557.
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Ceanothus crassifolius - Malosma laurina (Sawyer et al. 2009) [37.208.08]
= Ceanothus crassifolius - Malosma laurina Shrubland (Klein and Evens 2006)
= Ceanothus crassifolius-Malosma laurina Shrubland Association (Keeler-Wolf and Evens 2006)
= Ceanothus crassifolius - Malosma laurina Shrubland (Klein and Evens 2006)
= Ceanothus crassifolius-Malosma laurina Shrubland Association (Keeler-Wolf and Evens 2006)
- 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.