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Festuca idahoensis - Koeleria macrantha Herbaceous Vegetation | Western Ecology Working Group of...
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Name: Festuca idahoensis - Koeleria macrantha Herbaceous Vegetation
Reference: Western Ecology Working Group of...
Description: This association is described from sites on the dissected basalt plateaus, biscuit-and-swale (mound) formations, and high- and low-elevation canyon and mountain slopes of the lower Snake River drainage. Considerable variability in species composition occurs over this range of physical environmental settings. The association occurs on relatively deep loessal soils that overlay basalt rock or colluvium. The association includes the most productive grassland stands in the Blue Mountains ecoregional section. Stands occur on gentle to steep, northwest- to northeast-facing slopes at 370 to 2015 m (1200-6600 feet) elevation. This plant association is characterized by a dense sward of bunchgrasses and a rich assemblage of forbs. <i>Festuca idahoensis</i> is abundant. <i>Pseudoroegneria spicata</i> is often the codominant bunchgrass, though the presence of <i>Koeleria macrantha</i> on these sites is indicative of more mesic environments, compared to adjacent <i>Festuca idahoensis - Pseudoroegneria spicata</i> communities. Consistent associate forbs include <i>Triteleia grandiflora var. grandiflora (= Brodiaea douglasii), Frasera albicaulis, Castilleja hispida, Hieracium cynoglossoides (= Hieracium albertinum)</i>, and <i>Arnica sororia</i>. 
Accession Code: VB.CC.33683.CEGL001620
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 17-Nov-2014 to: 01-May-2019
     
  • status: accepted
  • This Community's Level: association
  • This Community's Children: [none]
Names:   UID: ELEMENT_GLOBAL.2.686449 NatureServe ExplorerNatureServe Explorer logo
  Translated: Idaho Fescue - Prairie Junegrass Herbaceous Vegetation
  Scientific: Festuca idahoensis - Koeleria macrantha Herbaceous Vegetation
  Code: CEGL001620