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Pseudotsuga menziesii - Tsuga heterophylla / Rhododendron macrophyllum Forest | NatureServe Biotics 2019
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Name: Pseudotsuga menziesii - Tsuga heterophylla / Rhododendron macrophyllum Forest Reference: NatureServe Biotics 2019 Description: This Douglas-fir - western hemlock forest of Washington and Oregon has a canopy dominated by <i>Pseudotsuga menziesii</i> and <i>Tsuga heterophylla</i>. Both are always present and the latter dominates tree regeneration. The well-developed shrub layer is dominated or codominated by <i>Rhododendron macrophyllum</i>. <i>Gaultheria shallon</i> and <i>Mahonia nervosa</i> are usually present and either can codominate. The herb layer varies from sparse to well-developed; when prominent it is dominated by <i>Xerophyllum tenax</i>. <i>Linnaea borealis</i> is often present. If <i>Polystichum munitum</i> is present, it has less than 3% cover. This association occurs at low to moderate elevations on mid to upper slopes, ridgetops, and benches, especially on south to west aspects. Sites have dry, well-drained soils that are often shallow or very rocky.  Accession Code: urn:lsid:vegbank.org:commConcept:34303-{7E5E97FA-1B71-4BD6-85C8-4A6F81A7464B} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 11-May-2016 to: ongoing
	status: accepted Community's Parent: Tsuga heterophylla - Pseudotsuga menziesii / Cornus unalaschkensis Mesic Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.942454 NatureServe Explorer   Code: CEGL005544   Translated: Douglas-fir - Western Hemlock / Pacific Rhododendron Forest   Scientific: Pseudotsuga menziesii - Tsuga heterophylla / Rhododendron macrophyllum Forest