Invalid Unit Specified
CEGL001268 Larrea tridentata - Ephedra nevadensis Shrubland

The U.S. National
Vegetation Classification
Type Concept Sentence:
Collapse All::Expand All
Common (Translated Scientific) Name: Creosotebush - Nevada Joint-fir Shrubland
Colloquial Name:
Hierarchy Level: Association
Type Concept:
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features:
Classification Comments: No Data Available
Similar NVC Types:
Physiognomy and Structure: No Data Available
Dynamics: No Data Available
Environmental Description: No Data Available
Geographic Range:
Nations: US
States/Provinces: AZ, CA, NV
US Forest Service Ecoregions (1994/1995)
Domain Name:
Division Name:
Province Name: American Semi-Desert and Desert Province
Province Code: 322    Occurrence Status: Confident or certain
Section Name: Mojave Desert Section
Section Code: 322A     Occurrence Status: Confident or certain
Omernik Ecoregions:
Confidence Level: Low - Poorly Documented
Confidence Level Comments:
Grank: G5
Concept Lineage:
Obsolete Names:
Obsolete Parents:
Synonomy: = Larrea tridentata - Ambrosia dumosa - Ephedra nevadensis Association (Keeler-Wolf and Thomas 2000)
= Larrea tridentata - Ambrosia dumosa - Ephedra spp. Association (Warren et al. 1982)
= Larrea tridentata - Ephedra nevadensis (Sawyer et al. 2009) [33.010.10]
= Larrea tridentata - Ephedra nevadensis Association (Keeler-Wolf and Thomas 2000)
= Larrea tridentata-Ephedra nevadensis (Bourgeron and Engelking 1994)
= Larrea tridentata-Ephedra nevadensis Association (Evens et al. 2014)
< DRISCOLL FORMATION CODE:III.C.1.a. (Driscoll et al. 1984)
Concept Author(s): Western Ecology Group
Author of Description:
Version Date: 30Dec1899
  • Bourgeron, P. S., and L. D. Engelking, editors. 1994. A preliminary vegetation classification of the western United States. Unpublished report. The Nature Conservancy, Western Heritage Task Force, Boulder, CO. 175 pp. plus appendix.
  • Driscoll, R. S., D. L. Merkel, D. L. Radloff, D. E. Snyder, and J. S. Hagihara. 1984. An ecological land classification framework for the United States. Miscellaneous Publication No. 1439. USDA Forest Service, Washington, DC. 56 pp.
  • 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 Unpublished report submitted to USDI National Park Service, Mojave Desert Network Inventory and Monitoring Program.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.
  • Warren, P. L., K. L. Reichhardt, D. A. Mouat, B. T. Brown, and R. R. Johnson. 1982. Vegetation of Grand Canyon National Park. Cooperative National Park Resources Studies Unit Technical Report 9. Tucson, AZ. 140 pp.
  • Wells, P. V. 1961a. Succession in desert vegetation on streets of a Nevada ghost town. Science 134:670-671.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.