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A.1539 | EcoArt 2002
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Name: A.1539
Reference: EcoArt 2002
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.1299.A1539
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: V.A.7.N.h
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: PLEURAPHIS RIGIDA SHRUB HERBACEOUS ALLIANCE
  Code: A.1539
  Common: Big Galleta Shrub Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Pleuraphis rigida Shrub Herbaceous Alliance