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Artemisia tripartita ssp. tripartita / Festuca campestris Shrub Herbaceous Vegetation | Western Ecology Working Group of...
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Name: Artemisia tripartita ssp. tripartita / Festuca campestris Shrub Herbaceous Vegetation
Reference: Western Ecology Working Group of...
Description: This type is a minor component of landscapes generally dominated by Artemisia tridentata ssp. vaseyana in both eastern Washington and western Montana. These are generally arid sites with annual precipitation of 20-60 cm; in Washington elevation ranges between 1100 and 3000 feet whereas its highly circumscribed Montana distribution ranges between 4200 and 4600 feet. In Washington this type is found on northerly aspects where loess soils cap basalt and granite. In Montana this type is found in glaciated landscapes where glacial till derived from metamorphic Belt Series rock predominates, and it occurs on gentle slopes of all aspects. It is possibly more abundant in British Columbia and Alberta. Artemisia tripartita, characteristically less than 2 feet tall, dominates the shrub layer, typically ranging in canopy cover from 10-40%. In Washington, Artemisia tridentata and Purshia tridentata, and in Montana Rosa woodsii, are the shrubs regularly present. On most sites, especially those only lightly grazed, Festuca campestris is by far the dominant herb (canopy cover ranging from 10-60%), but on the most mesic sites its cover can be approached by that of Achnatherum richardsonii (= Stipa richardsonii) and/or Achnatherum occidentale (= Stipa occidentalis). On more intensively grazed sites Festuca idahoensis cover (or that of other graminoids) approaches or exceeds that of Festuca campestris. Forb diversity is moderate to high; in Montana, Potentilla gracilis, Geranium viscosissimum, Lupinus sericeus, Eriogonum umbellatum and Antennaria microphylla dominate this layer. Washington occurrences contrast with those of Montana by having a well-developed soil crust of mosses, lichens and algae. 
Accession Code: VB.CC.23874.ARTEMISIATRIPAR
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 17-Nov-2014
      Names:   Translated: Threetip Sagebrush / Prairie Fescue Shrub Herbaceous Vegetation
  UID: ELEMENT_GLOBAL.2.688208 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL001537
  Scientific: Artemisia tripartita ssp. tripartita / Festuca campestris Shrub Herbaceous Vegetation
(convergence) and Synonyms:
(undetermined) Artemisia tripartita ssp. tripartita / Festuca campestris Shrub Herbaceous Vegetation