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A.1290 | EcoArt 2002
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Name: A.1290
Reference: EcoArt 2002
Description: This grassland of the Mojave Desert grows in very xeric conditions with hot summers and occasional freezes in the winter. This alliance requires well-drained rocky or sandy soils. It was formerly widespread, but overgrazing has decimated stands. Remaining stands occur from 600-1000 m elevation on flat ridges, lower slopes, valleys, and washes. Stands of this alliance are dominated by ~Achnatherum speciosum (= Stipa speciosa)$, which is the sole, dominant or important plant in the herbaceous layer. Species composition varies between stands, but ~Achnatherum speciosum$ is the unifying species. Other graminoids which may be present include ~Nassella lepida, Achnatherum hymenoides (= Oryzopsis hymenoides), Nassella cernua, Poa secunda$, and ~Elymus elymoides$. Scattered emergent shrubs, such as ~Hymenoclea salsola$, may be present. 
Accession Code: VB.CC.1060.A1290
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.5.N.f
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: ACHNATHERUM SPECIOSUM HERBACEOUS ALLIANCE
  Code: A.1290
  Common: Desert Needlegrass Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Achnatherum speciosum Herbaceous Alliance