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CEGL005081 Encelia resinifera Shrubland

The U.S. National
Vegetation Classification
Type Concept Sentence:
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Common (Translated Scientific) Name: Sticky Brittlebush Shrubland
Colloquial Name:
Hierarchy Level: Association
Type Concept: This sticky brittlebush shrubland association is currently described from Grand Canyon National Park and Grand Canyon-Parashant National Monument in Arizona. More survey and classification work are needed to fully characterize this type. It typically occurs on low and mid sideslopes at 1025 to 1450 m (3375-4750 feet) elevation, but can be found as low as 600 m (1950 feet). It chiefly occurs on moderate to steep gradients (25-40°), but is also found on gentler slopes (10-20°). Soils are well- to rapidly-drained silty or sandy loams or clays, and the underlying geology can vary from limestone to sandstone or shale. Vegetation is characterized and dominated by the short shrub Encelia resinifera. A sparse tall-shrub layer that includes Acacia greggii is infrequently present. The short-shrub layer occasionally supports Ephedra torreyana. A fairly sparse dwarf-shrub layer of Gutierrezia sarothrae and Thamnosma montana occasionally occurs. The exotic Bromus rubens is very common in a relatively well-developed graminoid layer. Muhlenbergia porteri, Achnatherum speciosum, and Aristida purpurea are also somewhat common. A variety of species, including Sphaeralcea grossulariifolia, Gilia sp., Galium stellatum, and Eriogonum inflatum, occur in the forb understory.
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: This shrubland association is currently known from Grand Canyon National Park and Grand Canyon-Parashant National Monument in Arizona. More survey work is needed to fully document its global range.
Nations: US
States/Provinces: AZ
US Forest Service Ecoregions (1994/1995)
Domain Name:
Division Name:
Province Name: Colorado Plateau Semi-Desert Province
Province Code: 313    Occurrence Status: Confident or certain
Section Name: Grand Canyon Lands Section
Section Code: 313A     Occurrence Status: Confident or certain
Omernik Ecoregions:
Confidence Level: Low
Confidence Level Comments:
Grank: GNR
Concept Lineage:
Obsolete Names:
Obsolete Parents:
Synonomy: = Encelia resinifera Shrubland (Reid and Hall 2010)
Concept Author(s): M.S. Reid and M.E. Hall (2010)
Author of Description: R. Meszaros
Version Date: 29Jul2010
  • 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.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.