Print Report

CEGL005744 Chilopsis linearis / Hymenoclea salsola Desert Wash Scrub

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Desert-willow / Burrobrush Desert Wash Scrub

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This association occurs along intermittently flooded drainages in the Mojave Desert in California and southern Nevada. Chilopsis linearis is dominant and characteristic in the sparse to open tree overstory (1-40% cover). The sparse to moderately dense shrub layer is variable, ranging from 2 to 26% cover, and is dominated or codominated by Hymenoclea salsola with 1-10% cover. Ephedra californica and Cleome isomeris may be present to codominant in shrub layer. A variety of other wash-associated shrubs may be present. Herbaceous cover is sparse and commonly includes introduced species Bromus madritensis, Bromus rubens, Erodium cicutarium, and Schismus spp. on disturbed sites. Stands are found at low to mid elevations along intermittently flooded drainages that are braided and scoured, primarily in arroyos, washes, or canyons. Sites occur on low to mid slopes between 580 and 1200 m elevation often with southerly aspects. Soils are rapidly drained medium to coarse sand derived from alluvium from a variety of substrates such as granite, granodiorite, rhyolite, limestone and sandstone. Over 80% of the ground surface is gravel and fine sediment.

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 association is characterized by dominance of Chilopsis linearis in the sparse to open tree overstory (1-40% cover). The sparse to moderately dense shrub layer is variable, ranging from 2 to 26% cover, and is dominated or codominated by Hymenoclea salsola with 1-10% cover (Keeler-Wolf et al. 1998a, Evens 2000, Evens et al. 2014). Ephedra californica and Cleome isomeris (= Isomeris arborea) may be present to codominant in the shrub layer. A variety of other wash-associated shrubs may be present, including Acacia greggii, Cleome isomeris, Larrea tridentata, Phoradendron californicum, and Senecio flaccidus (Keeler-Wolf et al. 1998a, Evens 2000, Evens et al. 2014). Herbaceous cover is sparse and commonly includes introduced species Bromus madritensis, Bromus rubens, Erodium cicutarium, and Schismus spp. on disturbed sites.

Dynamics:  No Data Available

Environmental Description:  This association occurs along intermittently flooded drainages in the Mojave Desert in California and southern Nevada. Stands are found at low to mid elevations along intermittently flooded drainages that are braided and scoured, primarily in arroyos, washes, or canyons (Keeler-Wolf et al. 1998a, Evens 2000, Evens et al. 2014). Sites occur on low to mid slopes between 580 and 1200 m elevation often with southerly aspects. Soils are rapidly drained medium to coarse sand derived from alluvium from a variety of substrates such as granite, granodiorite, rhyolite, limestone and sandstone (Keeler-Wolf et al. 1998a, Evens 2000, Evens et al. 2014). Over 80% of the ground surface is gravel and fine sediment

Geographic Range: This association occurs along intermittently flooded channels in the Mojave Desert in southeastern California and southern Nevada.

Nations: US

States/Provinces:  CA, NV




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: = Chilopsis linearis / Ambrosia salsola (Sawyer et al. 2009) [61.550.02]
= Chilopsis linearis / Hymenoclea salsola Association (Evens et al. 2014)
= Chilopsis linearis / Hymenoclea salsola Association (Evens 2000)
< Chilopsis linearis Shrubland Alliance (Keeler-Wolf and Thomas 2000)
< Desert willow series (Keeler-Wolf et al. 1998a)

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. 2000. Water course vegetation on granite and calcareous substrates in the eastern Mojave Desert, California. Master''s thesis, Humboldt State University, Arcata, 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.
  • Keeler-Wolf, T., C. Roye, and K. Lewis. 1998a. Vegetation mapping and classification of the Anza-Borrego Desert State Park, California. Unpublished report on file at California Natural Diversity Database, California Department Fish and Game, Sacramento.
  • 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.