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Pinus ponderosa / Calamagrostis rubescens Forest | Western Ecology Working Group of...
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Name: Pinus ponderosa / Calamagrostis rubescens Forest
Reference: Western Ecology Working Group of...
Description: This association has only been described from central and northeastern Oregon, and adjacent Washington and Idaho. It is most often found between 4300 and 6000 feet on all aspects with slopes less than 20%. Soils range from sandy or silty loams to silty clay loams and clay. Parent material is residuum and colluvium of igneous, sedimentary, and metamorphic rocks, most with a mantle of ash or loess. This open forest resembles a park-like setting typified by large trees mantling a grassy floor. It usually consists of large-diameter Pinus ponderosa averaging 45% (17-81%) cover, which represents the only tree. Shrub cover is low with the most common associate, Symphoricarpos albus having less than 2% canopy cover. Calamagrostis rubescens averages 38% (7-70%) cover and Carex geyeri supports an average of 20% (2-45%) cover. Forbs include Achillea millefolium, Lupinus caudatus, Arnica cordifolia, and Fragaria crinita, all occurring at less than 12%. 
Accession Code: VB.CC.21690.PINUSPONDEROSAC
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 17-Nov-2014
      Names:   UID: ELEMENT_GLOBAL.2.685719 NatureServe ExplorerNatureServe Explorer logo
  Translated: Ponderosa Pine / Pinegrass Forest
  Code: CEGL000181
  Scientific: Pinus ponderosa / Calamagrostis rubescens Forest
  Common: Ponderosa Pine / Pinegrass Forest
(convergence) and Synonyms:
(undetermined) Pinus ponderosa / Calamagrostis rubescens Forest