Print Report

CEGL005772 Pinus monophylla / Prunus fasciculata - Rhus trilobata Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Singleleaf Pinyon / Desert Almond - Skunkbush Sumac Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This woodland association occurs in the Mojave Desert in California. Pinus monophylla is the characteristic and usually dominant or codominant tree in the sparse to open tree canopy (2-22% cover). Juniperus osteosperma may be present to codominant. The open to moderately dense shrub layer is variable, ranging from 7-36% cover, and is dominated or codominated by tall shrubs Prunus fasciculata, Rhus trilobata, and Fallugia paradoxa. Other associated shrubs and succulents may be present. The herbaceous understory ranges from sparse to open (to 18% cover). Commonly associated species include Achnatherum speciosum, Artemisia ludoviciana, Penstemon palmeri, Sphaeralcea ambigua, and exotic species Bromus rubens, Bromus tectorum, and Erodium cicutarium. Biological soil crust composed of lichens and mosses may be common. Stands are found on higher elevation bedrock and colluvial slopes in desert ranges and along intermittently flooded drainages in dry canyons. Elevation ranges from 1150 to 1750 m. Sites occur on all slope positions and aspects, but are common on midslopes and northerly aspects. Slopes range from gentle to steep. Soils range from clay loam and silt loam to coarse sand, 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: This woodland association is characterized by the dominance or codominance of Pinus monophylla in the sparse to open tree canopy (2-22% cover) (Evens et al. 2014). Juniperus osteosperma may be present to codominant. The open to moderately dense shrub layer is variable, ranging from 7-36% cover, and is dominated or codominated by tall shrubs Prunus fasciculata, Rhus trilobata, and Fallugia paradoxa. Other associated shrubs and succulents include Cylindropuntia acanthocarpa, Ephedra viridis, Gutierrezia microcephala, Salvia mohavensis, Thamnosma montana, and Yucca baccata (Evens et al. 2014). If present, the herbaceous understory ranges from sparse to open (to18% cover) (Evens et al. 2014). Commonly associated species include Achnatherum speciosum, Aristida purpurea, Artemisia ludoviciana, Penstemon palmeri, Sphaeralcea ambigua, and exotic species Bromus rubens, Bromus tectorum, and Erodium cicutarium (Evens et al. 2014).

Dynamics:  No Data Available

Environmental Description:  This woodland association occurs in the Mojave Desert in California on higher elevation bedrock and colluvial slopes in desert ranges and along intermittently flooded drainages in dry canyons (Evens et al. 2014). Elevation ranges from 1150 to 1750 m. Sites occur on all slope positions and aspects, but are common on midslopes and northerly aspects (Evens et al. 2014). Slopes range from gentle to steep (to 45°). Soils range from clay loam and silt loam to coarse sand, and are derived from a variety of substrates such as alluvium, gneiss, granodiorite, limestone, plutonic rock, rhyolite, and sandstone (Evens et al. 2014).

Geographic Range: This woodland association occurs in higher elevation ranges in the Mojave Desert in California.

Nations: US

States/Provinces:  CA




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Pinus monophylla / Prunus fasciculata - Rhus trilobata (Sawyer et al. 2009) [87.040.10]
= Pinus monophylla / Prunus fasciculata-Rhus trilobata Association (Evens et al. 2014)
< Pinus monophylla /Juniperus osteosperma Woodland Alliance (Keeler-Wolf and Thomas 2000)

Concept Author(s): Evens et al. (2014)

Author of Description: K.A. Schulz

Acknowledgements: No Data Available

Version Date: 11-21-16

  • 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.
  • 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.