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Fraxinus anomala - Rhus trilobata - Fendlera rupicola Talus & Rock Outcrop Shrubland Alliance | NatureServe Biotics 2019
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Name: Fraxinus anomala - Rhus trilobata - Fendlera rupicola Talus & Rock Outcrop Shrubland Alliance
Reference: NatureServe Biotics 2019
Description: This shrubland alliance occurs in Colorado Plateau, southern Rocky Mountains, and Great Basin. Vegetation in this mixed, short (&lt;2 m tall) shrubland alliance is variable. The shrub canopy has sparse to moderate cover, often with irregularly distributed dense shrub patches located below cliffs, on benches, in dry channels, on toeslopes and lower slopes, and near seeps where soil moisture is more available. Stands are often characterized by a sparse to low cover (&lt;15% total cover) mix of xeric shrubs; <i>Brickellia californica, Fraxinus anomala, Fendlera rupicola</i>, and <i>Rhus trilobata</i> are conspicuous and usually at least codominant. At higher elevations and in microsites, mesic- and cool-site shrubs such as <i>Jamesia americana, Prunus virginiana, Ribes cereum, Rubus deliciosus, Holodiscus dumosus, Dasiphora fruticosa ssp. floribunda</i>, and <i>Acer glabrum</i> are characteristic. Many other shrub species may be present. The herbaceous layer is also variable depending on site characteristics and may include many species but none provides more than a few percent cover. Biological soil crust formation is rare on active slopes. Lichens provide large amounts of foliar cover, at times from 30-60% on more stable rock. This shrubland alliance occurs in canyons, plateaus, foothill and mountain slopes or rocky colluvial slopes and rock outcrop/large cliff faces. Elevations range from 1268 to 2715 m (4160-8900 feet). Slopes are moderate to very steep and are often oriented to the cooler north or east aspects. Soils tend to be sandy and skeletal. 
Accession Code: urn:lsid:vegbank.org:commConcept:38950-{867596EE-294E-42A7-B89F-258CF767D5FA}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 18-Dec-2014 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.899788 NatureServe ExplorerNatureServe Explorer logo
  Code: A3736
  Translated: Singleleaf Ash - Skunkbush Sumac - Cliff Fendlerbush Talus & Rock Outcrop Shrubland Alliance
  Common: Singleleaf Ash - Skunkbush Sumac - Cliff Fendlerbush Talus & Rock Outcrop Shrubland
  Scientific: Fraxinus anomala - Rhus trilobata - Fendlera rupicola Talus & Rock Outcrop Shrubland Alliance