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Pinus ponderosa / Calamagrostis rubescens Forest | NatureServe Biotics 2019
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Name: Pinus ponderosa / Calamagrostis rubescens Forest
Reference: NatureServe Biotics 2019
Description: This association has only been described from central and northeastern Oregon, and adjacent Washington and Idaho. It is most often found between 1310 and 1830 m (4300-6000 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 <i>Pinus ponderosa</i> averaging 45% (17-81%) cover, which represents the only tree. Shrub cover is low with the most common associate, <i>Symphoricarpos albus</i> having less than 2% canopy cover. <i>Calamagrostis rubescens</i> averages 38% (7-70%) cover and <i>Carex geyeri</i> supports an average of 20% (2-45%) cover. Forbs include <i>Achillea millefolium, Lupinus caudatus, Arnica cordifolia</i>, and <i>Fragaria vesca ssp. bracteata</i>, all occurring at less than 12%. 
Accession Code: urn:lsid:vegbank.org:commConcept:29090-{47FAF1E0-C18A-40C6-BBAF-AE5A8083AF82}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 02-Jun-1993 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.685719 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000181
  Translated: Ponderosa Pine / Pinegrass Forest
  Scientific: Pinus ponderosa / Calamagrostis rubescens Forest
(convergence) and Synonyms:
(similar) Pinus ponderosa / Calamagrostis rubescens Forest
(similar) Pinus ponderosa / Calamagrostis rubescens Forest
(similar) CEGL000181