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Purshia stansburiana - Agave utahensis Shrubland | NatureServe Biotics 2019
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Name: Purshia stansburiana - Agave utahensis Shrubland
Reference: NatureServe Biotics 2019
Description: This association is found uncommonly along desert ridges and mountains in the Mojave Desert in California and forms an open shrub canopy (9-17% cover) that is dominated by <i>Agave utahensis</i> and <i>Purshia stansburiana</i> with <i>Echinocereus engelmannii, Ephedra viridis, Gutierrezia sarothrae</i>, and <i>Thamnosma montana</i> being characteristically present. Several other shrubs may be present. The herbaceous layer is variable and ranges from 2 to 22% cover. Commonly associated herbs include <i>Achnatherum speciosum, Aristida purpurea, Astrolepis cochisensis, Muhlenbergia porteri, Sphaeralcea ambigua, Thymophylla pentachaeta var. belenidium</i>, and invasive exotics <i>Bromus rubens</i> and <i>Erodium cicutarium</i>. Occasional emergent trees may be present with &lt;2% cover. Biological soil crusts are common. Stands are found along upper-elevation limestone and dolomite bedrock slopes and ridges in the Mojave Desert. Sites are on moderate to steep (9-33°) slopes on predominantly warm, southerly to westerly aspects at 1400 to 1650 m elevation. Soils are usually clay loam or sandy loam and are derived from nutrient-poor parent materials. 
Accession Code: urn:lsid:vegbank.org:commConcept:37515-{0A450F66-E2A2-4F5D-BE55-4F6C54B243EB}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 24-Apr-2018 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.972095
  Code: CEPP006748
  Translated: Stansbury's Cliffrose - Utah Agave Shrubland
  Scientific: Purshia stansburiana - Agave utahensis Shrubland