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Pinus ponderosa / Purshia tridentata / Carex rossii Woodland | Western Ecology Working Group of...
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Name: Pinus ponderosa / Purshia tridentata / Carex rossii Woodland
Reference: Western Ecology Working Group of...
Description: This woodland is found in the southern Blue Mountains, the Ochoco Range, and southeastern Oregon Cascades. Elevations are between 1020-1980 m (3350-6500 feet) with generally low steepness (0-50%) and a variety of aspects, but favoring southerly exposures in the Blue Mountains. Soils are sandy loams, silt, and loamy sand. The overstory is dominated by Pinus ponderosa (25-53% cover) with occasional Juniperus occidentalis (0-4% cover). The shrub layer is characterized by Purshia tridentata (5-37% cover) and occasional Mahonia repens (0-36% cover). The herbaceous layer is usually dominated by Carex rossii with 10-46% cover. Other herbaceous species include Achnatherum occidentale ssp. occidentale (= Stipa occidentalis) (3-10% cover) and Elymus elymoides ssp. elymoides (= Sitanion hystrix) (5-10% cover). Occasionally, Achillea millefolium and Fragaria virginiana are present. This association is well-adapted to periodic surface fires which promote regeneration of Pinus ponderosa. It occupies warm and moist sites as compared to other Pinus ponderosa / Purshia tridentata associations. 
Accession Code: VB.CC.25750.PINUSPONDEROSAP
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 17-Nov-2014
      Names:   Translated: Ponderosa Pine / Bitterbrush / Ross' Sedge Woodland
  Scientific: Pinus ponderosa / Purshia tridentata / Carex rossii Woodland
  UID: ELEMENT_GLOBAL.2.688843 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000194
(convergence) and Synonyms:
(undetermined) Pinus ponderosa / Purshia tridentata / Carex rossii Woodland