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CEGL005749 Encelia farinosa - Peucephyllum schottii Desert Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Brittlebush - Schott''s Pygmy-cedar Desert Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This desert scrub association is found at low to upper elevations in the Colorado and Mojave deserts in California, Arizona and southern Nevada. Vegetation is characterized by an open to moderately dense, often patchy shrub canopy (1-35% cover) dominated by Encelia farinosa with Peucephyllum schottii present to codominant. Other shrubs frequently present are Ambrosia dumosa, Hymenoclea salsola, Hyptis emoryi, Fagonia laevis, and Larrea tridentata. If present, the herbaceous layer is typically sparse, and composed of Eriogonum inflatum and other annuals. Stands are found on flats, hillslopes and cliffs on low to high slopes at 82-950 m elevation. Sites occur on gentle to very steep slopes on variable aspects. Substrates are typically coarse-textured alluvial soils with high cover of gravel, cobble, or bedrock on the surface. Soils are derived from a variety of substrates.
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: Vegetation is characterized by an open to moderately dense, often patchy shrub canopy (1-35% cover) dominated by Encelia farinosa with Peucephyllum schottii present to codominant (Evens and Hartman 2007, Evens et al. 2014). Other shrubs frequently present are Ambrosia dumosa, Hymenoclea salsola, Hyptis emoryi, Fagonia laevis, and Larrea tridentata (Evens and Hartman 2007, Evens et al. 2014). If present, the herbaceous layer is typically sparse (<10% cover) but is denser during wet years (to 37% cover) and is composed of annuals such as Eriogonum inflatum (Evens and Hartman 2007, Evens et al. 2014).
Dynamics: No Data Available
Environmental Description: This desert scrub association is found at low to upper elevations in the Colorado and Mojave deserts in California, Arizona and southern Nevada. It is found on flats, hillslopes and cliffs on low to high slopes at 82-950 m elevation. Sites occur on gentle to very steep slopes (to 70°) on variable aspects (Evens and Hartman 2007, Evens et al. 2014). Substrates are typically coarse-textured alluvial soils with high cover of gravel, cobble, or bedrock on the surface. Soils are derived from a variety of substrates such as alluvium, basalt, conglomerate, granite, gypsum, rhyolite, sandstone, and schist (Evens and Hartman 2007, Evens et al. 2014).
Geographic Range: This desert scrub association is found at low to upper elevations in the Colorado and Mojave deserts and southern Great Basin in Arizona, California, and southern Nevada and was sampled in Death Valley National Park and Lake Mead National Recreation Area.
Nations: US
States/Provinces: AZ, CA, NV
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.971598
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: GNR
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 3 Desert & Semi-Desert Class | C03 | 3 |
| Subclass | 3.A Warm Desert & Semi-Desert Woodland, Scrub & Grassland Subclass | S06 | 3.A |
| Formation | 3.A.2 Warm Desert & Semi-Desert Scrub & Grassland Formation | F015 | 3.A.2 |
| Division | 3.A.2.Na North American Warm Desert Scrub & Grassland Division | D039 | 3.A.2.Na |
| Macrogroup | 3.A.2.Na.4 Saguaro - Organ Pipe Cactus - Burrobush Mojave-Sonoran Semi-Desert Scrub Macrogroup | M088 | 3.A.2.Na.4 |
| Group | 3.A.2.Na.4.b Creosotebush - Burrobush - Brittlebush Desert Scrub Group | G295 | 3.A.2.Na.4.b |
| Alliance | A4215 Brittlebush Desert Scrub Alliance | A4215 | 3.A.2.Na.4.b |
| Association | CEGL005749 Brittlebush - Schott''s Pygmy-cedar Desert Shrubland | CEGL005749 | 3.A.2.Na.4.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Encelia farinosa - Peucephyllum schottii (Sawyer et al. 2009) [33.030.02]
= Encelia farinosa - Peucephyllum schottii Shrubland Association (Evens and Hartman 2007)
= Encelia farinosa-Peucephyllum schottii (Keeler-Wolf and Thomas 2000)
= Encelia farinosa-Peucephyllum schottii Association (Evens et al. 2014)
< Encelia farinosa Shrubland Alliance (Keeler-Wolf and Thomas 2000)
= Encelia farinosa - Peucephyllum schottii Shrubland Association (Evens and Hartman 2007)
= Encelia farinosa-Peucephyllum schottii (Keeler-Wolf and Thomas 2000)
= Encelia farinosa-Peucephyllum schottii Association (Evens et al. 2014)
< Encelia farinosa Shrubland Alliance (Keeler-Wolf and Thomas 2000)
- Evens, J. M., K. Sikes, D. Hastings, and J. Ratchford. 2014. Vegetation alliance descriptions for Lake Mead National Recreation Area, Death Valley National Park and Mojave National Preserve. Unpublished report submitted to USDI National Park Service, Mojave Desert Network Inventory and Monitoring Program. California Native Plant Society, Sacramento, CA.
- Evens, J. M., and S. Hartman. 2007. Vegetation survey and classification for the Northern and Eastern Colorado Desert Coordinated Management Plan (NECO). CNPS Vegetation Program, Sacramento, CA.
- Keeler-Wolf, T., and K. Thomas. 2000. Draft descriptions of vegetation alliances for the Mojave Ecosystem Mapping project. California Natural Diversity Database, California Department of Fish and Game, Sacramento.
- 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.