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A.1263 | EcoArt 2002
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Name: A.1263
Reference: EcoArt 2002
Description: These grasslands have been described from basins and drainages east of the Cascades in central Oregon. Elevations range from 1280-1830 m. Stands occur in floodplains and terraces along low-gradient streams. Sites are flat to gently sloping. Stands in the bottomlands may be seasonally flooded during the winter. Upland stands in pumice-mantled basin meadows are not flooded except during abnormally wet years. Water tables are a meter below ground by midsummer and are very deep by late summer. Soils are moderately deep alluviums. Soil textures range from sandy loam to silty loam. Soil parent material is pumice. Vegetation included in this grassland alliance has a moderately dense to dense (60 to more than 80% cover) herbaceous layer about 0.5 m tall. Stands are dominated by the midgrass ~Poa fendleriana ssp. fendleriana$ with several other graminoids, including ~Carex athrostachya, Carex filifolia, Carex praegracilis, Elymus caninus, Koeleria macrantha$, and ~Muhlenbergia richardsonis$. Forb cover is relatively sparse (usually less 25%) and consists of ~Achillea millefolium$ and ~Symphyotrichum campestre var. bloomeri (= Aster campestris var. bloomeri)$. Adjacent stands include upland coniferous forests dominated by ~Pinus contorta$ and various wetlands dominated by herbaceous and shrub species of ~Carex$ and ~Salix$. 
Accession Code: VB.CC.1031.A1263
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.d
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: POA FENDLERIANA HERBACEOUS ALLIANCE
  Code: A.1263
  Common: Muttongrass Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Poa fendleriana Herbaceous Alliance