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Pseudotsuga menziesii - Tsuga heterophylla / Mahonia nervosa - Polystichum munitum Forest | NatureServe Biotics 2019
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Name: Pseudotsuga menziesii - Tsuga heterophylla / Mahonia nervosa - Polystichum munitum Forest
Reference: NatureServe Biotics 2019
Description: This Douglas-fir forest of British Columbia, Washington, Oregon and possibly California has a canopy dominated by <i>Pseudotsuga menziesii</i> or codominated by that species and <i>Tsuga heterophylla</i>. <i>Thuja plicata</i> is usually present, often prominent and occasionally codominant. The well-developed shrub layer has <i>Mahonia nervosa</i> prominent to codominant. <i>Acer circinatum</i> is sometimes codominant, forming a taller layer. <i>Gaultheria shallon</i> is usually present, but always in small amounts. The typically well-developed herb layer is dominated by <i>Polystichum munitum</i> usually with low abundance of other species. In Washington, this association occurs in the western Cascades and Olympic Peninsula, although it is absent from the outer coastal strip. It occurs at low elevations. Sites have well-drained, mesic soils and are located on mid- to toeslopes, benches and bottoms. 
Accession Code: urn:lsid:vegbank.org:commConcept:34302-{6178F28D-4710-437C-81F0-07D2E0A7058D}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 11-May-2016 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.942453 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL005543
  Translated: Douglas-fir - Western Hemlock / Cascade Barberry - Western Swordfern Forest
  Scientific: Pseudotsuga menziesii - Tsuga heterophylla / Mahonia nervosa - Polystichum munitum Forest