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A.874 | EcoArt 2002
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Name: A.874
Reference: EcoArt 2002
Description: This alliance occurs at the transition between the Mojave and Great Basin deserts on mountain slopes, mesas or bajadas bordering intermountain basins. Soils are highly variable across the large range of this vegetation type, but are generally coarse-textured and well-drained. This vegetation is characterized by a sparse to moderately dense shrub layer of ~Coleogyne ramosissima$. Although ~Coleogyne$ is apparently restricted to a particular elevational zone, associated shrub species can be of either Mojavean or Great Basin affinities. Shrub species may include ~Menodora spinescens, Picrothamnus desertorum (= Artemisia spinescens), Eriogonum fasciculatum, Ephedra$ spp., ~Atriplex$ spp., ~Grayia spinosa, Larrea tridentata, Chrysothamnus viscidiflorus, Yucca baccata, Gutierrezia sarothrae$, and ~Opuntia$ spp. Occasionally, scattered individuals of ~Yucca brevifolia$ may be emergent through the shrub layer. The herbaceous layer is typically sparse. Species of ~Eriogonum, Navarretia, Sphaeralcea, Pleuraphis jamesii (= Hilaria jamesii), Mirabilis multiflora, Achnatherum hymenoides (= Oryzopsis hymenoides)$, and ~Achnatherum speciosum (= Stipa speciosa)$ may be present. Diagnostic of this alliance is the dominance of ~Coleogyne ramosissima$ in the shrub layer. 
Accession Code: VB.CC.2503.A874
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 17-Mar-2005
     
  • status: accepted
  • Community's Parent: III.A.5.N.b
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: COLEOGYNE RAMOSISSIMA SHRUBLAND ALLIANCE
  Code: A.874
  Common: Blackbrush Shrubland Alliance
(convergence) and Synonyms:
(undetermined) Coleogyne ramosissima Shrubland Alliance