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CEGL005293 Salazaria mexicana Shrubland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Mexican Bladdersage Shrubland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This Mexican bladdersage shrubland association occurs in northern Arizona, southeastern California and southern Nevada. It is currently described from Grand Canyon National Park in Arizona. More survey and classification work are needed to fully characterize this type. It typically occurs on sideslopes of cinder cones at 1275 to 1400 m (4250-4600 feet) elevation, on south- and west-facing aspects of moderately steep (10-24°) slopes. Soils are moderately well-drained silty clays that lie above volcanic cinders. Vegetation is dominated by the short shrub Salazaria mexicana. Tall shrubs are absent. The short-shrub layer includes Lycium andersonii and Ephedra aspera. Dwarf-shrubs are rare, but Thamnosma montana does occur sporadically. The graminoid understory is extremely sparse and almost non-existent in some stands; however, species such as Bromus arvensis, Achnatherum speciosum, Bromus rubens, and Elymus elymoides sporadically occur at trace covers. Mentzelia albicaulis and Astragalus sp. are consistently present in the forb understory. Amsinckia menziesii, Mirabilis multiflora, and Chaenactis stevioides also commonly occur.

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 dominated by the short shrub Salazaria mexicana. Tall shrubs are absent. The short-shrub layer includes Lycium andersonii and Ephedra aspera (= Ephedra fasciculata). Dwarf-shrubs are rare, but Thamnosma montana does occur sporadically. The graminoid understory is extremely sparse and almost non-existent in some stands; however, species such as Bromus arvensis, Achnatherum speciosum, Bromus rubens, and Elymus elymoides sporadically occur at trace covers. Mentzelia albicaulis and Astragalus sp. are consistently present in the forb understory. Amsinckia menziesii, Mirabilis multiflora, and Chaenactis stevioides also commonly occur.

Dynamics:  No Data Available

Environmental Description:  This Mexican bladdersage shrubland typically occurs on sideslopes of cinder cones at 1275 to 1400 m (4250-4600 feet) elevation, on south- and west-facing aspects of moderately steep (10-24°) slopes. Soils are moderately well-drained silty clays that lie above volcanic cinders.

Geographic Range: This shrubland association occurs in northern Arizona, southeastern California and southern Nevada. More survey work is needed to fully document its global range.

Nations: US

States/Provinces:  AZ, 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: = Salazaria mexicana (Sawyer et al. 2009) [33.310.01]
= Salazaria mexicana Association (Beatley 1976)
= Salazaria mexicana Association (Evens et al. 2014)
= Salazaria mexicana Shrubland (Reid and Hall 2010)

Concept Author(s): M.S. Reid and M.E. Hall (2010)

Author of Description: R. Meszaros

Acknowledgements: No Data Available

Version Date: 01-06-17

  • Beatley, J. C. 1976. Vascular plants of the Nevada Test Site and central-southern Nevada: Ecological and geographic distributions. Technical Information Center, Energy Research and Development Administration. TID-26881. Prepared for Division of Biomedical and Environmental Research. 297 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.
  • Kearsley, M. J. C., K. Green, M. Tukman, M. Reid, M. Hall, T. J. Ayers, and K. Christie. 2015. Grand Canyon National Park-Grand Canyon / Parashant National Monument vegetation classification and mapping project. Natural Resource Report NPS/GRCA/NRR--2015/913. National Park Service, Fort Collins, CO. 75 pp. plus appendices.
  • Reid, M. S., and M. E. Hall. 2010. Vegetation classification of Grand Canyon National Park. Draft report submitted to National Park Service, Fort Collins, CO.
  • 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.