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Pinus contorta / Purshia tridentata / Achnatherum occidentale ssp. occidentale Woodland | NatureServe Biotics 2019
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Name: Pinus contorta / Purshia tridentata / Achnatherum occidentale ssp. occidentale Woodland
Reference: NatureServe Biotics 2019
Description: This association is found along the eastern flanks of the Cascade Range of central Oregon. It occurs at moderate elevations between 1280 and 1890 m (4200-6200 feet) with low-gradient slopes (0-15%) of all aspects. Soils are usually well-drained mixtures of sand and loam, generally on deep pumice. <i>Pinus contorta var. latifolia</i> is the predominant overstory tree with occasional <i>Pinus ponderosa</i>. <i>Purshia tridentata</i> typically dominates the shrub layer with occasional <i>Ribes cereum var. cereum</i>. The herb layer consists of <i>Achnatherum occidentale</i> and lesser amounts of <i>Penstemon cinicola, Lupinus caudatus, Fragaria virginiana, Carex rossii</i>, and <i>Eriogonum umbellatum</i>. The climax tree species are <i>Pinus contorta var. latifolia</i> and <i>Pinus ponderosa</i>, which respond well to periodic natural disturbance. This association is similar to ~<i>Pinus contorta / Purshia tridentata / Festuca idahoensis</i> Woodland (CEGL000160)$$ but has a more depauperate understory and lack of <i>Festuca idahoensis</i>. 
Accession Code: urn:lsid:vegbank.org:commConcept:29071-{2670AD31-1278-48ED-8D1E-207E7395C297}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.686618 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000162
  Translated: Lodgepole Pine / Antelope Bitterbrush / Western Needlegrass Woodland
  Scientific: Pinus contorta / Purshia tridentata / Achnatherum occidentale ssp. occidentale Woodland
(convergence) and Synonyms:
(similar) CEGL000162
(similar) Pinus contorta var. latifolia / Purshia tridentata / Achnatherum occidentale ssp. occidentale Woodland
(similar) Pinus contorta var. latifolia / Purshia tridentata / Achnatherum occidentale ssp. occidentale Woodland