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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 association is restricted to the southern Oregon Cascades. <i>Pseudotsuga menziesii</i> and <i>Calocedrus decurrens</i> dominate the canopy. <i>Abies grandis</i> and <i>Pinus lambertiana</i> are often present. The regeneration layer usually consists of <i>Pseudotsuga menziesii, Calocedrus decurrens</i>, and <i>Abies grandis</i>. Traces of <i>Tsuga heterophylla</i> are present in about half of the stands of this association, in both the canopy and regeneration layers. <i>Rhododendron macrophyllum, Gaultheria shallon</i>, and <i>Mahonia nervosa</i> dominate the shrub layer. Small amounts of <i>Holodiscus discolor</i> and <i>Whipplea modesta</i> may be present. Herbs are often sparse, but traces of some species, especially <i>Linnaea borealis, Goodyera oblongifolia, Galium triflorum, Viola sempervirens, Pteridium aquilinum</i> and <i>Synthyris reniformis</i>, occur. This association is often found in depressions, swales or on east- or west-facing slopes. However, most sites are too droughty for abundant <i>Tsuga heterophylla</i> establishment. Most stands are below 915 m (3000 feet) and on gentle to moderately steep slopes. Soils are usually moderately deep and stony.  Accession Code: urn:lsid:vegbank.org:commConcept:28995-{6DDAB1A3-4F16-4BFF-9C65-900FE5E14157} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 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.2.687612 NatureServe Explorer   Code: CEGL000086   Translated: Douglas-fir - (Western Hemlock) / Pacific Rhododendron Forest   Scientific: Pseudotsuga menziesii - (Tsuga heterophylla) / Rhododendron macrophyllum Forest (convergence) and Synonyms: (similar) CEGL000086 (similar) Pseudotsuga menziesii - (Tsuga heterophylla) / Rhododendron macrophyllum Forest (similar) Pseudotsuga menziesii - (Tsuga heterophylla) / Rhododendron macrophyllum Forest