Print Report
CEGL005770 Peucephyllum schottii - Eucnide urens - Pleurocoronis pluriseta Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Schott''s Pygmy-cedar - Desert Stingbush - Bush Arrowleaf Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This sparse to open shrubland association occurs at low to upper elevations in the Mojave Desert and southern Great Basin in Arizona, southern Nevada, and California. Stands are characterized by the presence of shrubs/subshrubs Eucnide urens and/or Peucephyllum schottii with up to 12% cover. Other shrubs that are often present include Encelia farinosa, Eriogonum fasciculatum, and Pleurocoronis pluriseta. Sometimes Pleurocoronis pluriseta is dominant with or without the other two indicator shrub species of this association; other instances Peucephyllum may be dominant or codominant. If present, the sparse herbaceous layer has up to 10% cover and is composed of Nicotiana obtusifolia, Pterostegia drymarioides, Sphaeralcea ambigua, and exotic annual grass Bromus rubens. Nonvascular species may be present and sometimes form a biological soil crust. Stands occur where bedrock and/or boulders dominate the surface cover at 150-1300 m elevation. Slopes are gentle to abrupt as it is found primarily on channel walls or on steep and bouldery, high to midslope positions. Soils are typically clay loam, and 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: Stands are characterized by the presence of shrubs/subshrubs Eucnide urens and/or Peucephyllum schottii with up to 12% cover (Evens et al. 2014). Other shrubs that are often present include Encelia farinosa, Eriogonum fasciculatum, and Pleurocoronis pluriseta (Evens et al. 2014). Sometimes Pleurocoronis pluriseta is dominant with or without the other two indicator shrub species of this association; other instances Peucephyllum may be dominant or codominant. Other shrubs frequently present include Ambrosia dumosa, Cleome isomeris, Cylindropuntia ramosissima, Echinocereus mojavensis, Krameria grayi, Lycium andersonii, Gutierrezia microcephala, and Salvia mohavensis (Evens et al. 2012, 2014). If present, the sparse herbaceous layer has up to 10% cover and is composed of Eriastrum sp., Erigeron parishii, Nama californicum, Nicotiana obtusifolia, Pterostegia drymarioides, Sphaeralcea ambigua, and exotic annual grass Bromus rubens (Evens et al. 2012, 2014). Nonvascular species may be present and sometimes form a biological soil crust.
Dynamics: No Data Available
Environmental Description: This sparse to open scrub association occurs at low to upper elevations in the Mojave Desert and southern Great Basin in areas where bedrock and/or boulders are a dominating component of the surface cover. Stands are often found in or adjacent to washes or on rocky walls above them and on bouldery north-facing mountainsides at 150-1300 m elevation (Evens et al. 2012, 2014). Slopes are gentle to abrupt as found primarily on channel walls or on steep and bouldery, high to mid slopes with no aspect preference (Evens et al. 2014). Soils are typically clay loam, and are derived mostly from sedimentary substrates such as sandstone, limestone or dolostone (dolomite), but sometimes igneous types (Evens et al. 2014).
Geographic Range: This association is found in rocky areas in the Mojave Desert and southern Great Basin in Arizona, southern Nevada, and California and was sampled in Death Valley National Park, Joshua Tree National Park, and Lake Mead National Recreation Area. The characteristic species extend north into the central Great Basin, so this association may also occur further north.
Nations: US
States/Provinces: AZ, CA, NV
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.971750
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.6 Ocotillo - Desert-holly - Watson''s Amaranth North American Rock Vegetation Macrogroup | M117 | 3.A.2.Na.6 |
| Group | 3.A.2.Na.6.a Ocotillo - Bear-grass species - Desert-holly Rock Vegetation Group | G569 | 3.A.2.Na.6.a |
| Alliance | A3143 Schott''s Pygmy-cedar - Bush Arrowleaf Scrub Alliance | A3143 | 3.A.2.Na.6.a |
| Association | CEGL005770 Schott''s Pygmy-cedar - Desert Stingbush - Bush Arrowleaf Shrubland | CEGL005770 | 3.A.2.Na.6.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Peucephyllum schottii - Eucnide urens - Pleurocoronis pluriseta Association (Evens et al. 2014)
= Peucephyllum schottii - Pleurocoronis pluriseta - Eucnide urens Provisional Association (Evens et al. 2012)
= Peucephyllum schottii - Pleurocoronis pluriseta - Eucnide urens Provisional Association (Evens et al. 2012)
- Evens, J. M., D. Roach-McIntosh, and D. Stout. 2012. Vegetation descriptions for Joshua Tree National Park. Unpublished report submitted to USDI, National Park Service, Mojave Desert Inventory and Monitoring Network. California Native Plant Society, Sacramento, CA.
- 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.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.