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Pleuraphis rigida Shrub Herbaceous Alliance | Western Ecology Working Group of...
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Name: Pleuraphis rigida Shrub Herbaceous Alliance
Reference: Western Ecology Working Group of...
Description: This shrub herbaceous alliance of the Mojave and Colorado deserts occurs on flat ridges, lower slopes, and stabilized sand dunes. Pleuraphis rigida (= Hilaria rigida) stands occur from 75-1400 m of elevation. Yearly precipitation totals are between 0 and 25 cm. There is much year-to-year variation in precipitation. The summers are extremely hot. Winter temperatures, particularly at higher elevations, can get quite cold. Pleuraphis rigida is the sole or dominant graminoid in the herbaceous layer. Other grasses may include Bouteloua eriopoda, Dasyochloa pulchella (= Erioneuron pulchellum), Bromus madritensis, Pleuraphis jamesii (= Hilaria jamesii), and Achnatherum hymenoides (= Oryzopsis hymenoides). Emergent shrubs make up 3-5% cover, and could include Larrea tridentata and/or Yucca brevifolia. This alliance intergrades with stands of Larrea tridentata and/or Yucca brevifolia. 
Accession Code: VB.CC.22573.PLEURAPHISRIGID
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 01-May-2019
     
  • status: accepted
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: Pleuraphis rigida Shrub Herbaceous Alliance
  Translated: Big Galleta Shrub Herbaceous Alliance
  UID: HIGHER_CLASS_UNIT.2.126001 NatureServe ExplorerNatureServe Explorer logo
  Code: A.1539