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Chamaecyparis lawsoniana - Pseudotsuga menziesii / Notholithocarpus densiflorus / Gaultheria shallon Forest | NatureServe Biotics 2019
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Name: Chamaecyparis lawsoniana - Pseudotsuga menziesii / Notholithocarpus densiflorus / Gaultheria shallon Forest Reference: NatureServe Biotics 2019 Description: This conifer forest association occurs very locally in southwestern Oregon and northern California. These forests form open stands with a dense shrub layer. Stands are found between 400-910 m elevation, as strips along perennial streams or on well protected benches with frequent seeps. The tree canopy averages 80% cover, and is dominated by <i>Chamaecyparis lawsoniana</i> and <i>Pseudotsuga menziesii</i>. <i>Taxus brevifolia</i> and <i>Notholithocarpus densiflorus</i> are also common, and there are more species of <i>Pinus</i> found in this association than any other <i>Chamaecyparis lawsoniana</i> association. <i>Pinus attenuata, Pinus lambertiana, Pinus monticola, Arbutus menziesii, Umbellularia californica, Quercus chrysolepis</i>, and <i>Chrysolepis chrysophylla</i> are all occasionally found in the tree layer. The typically dense shrub layer attains 97% cover and is a diagnostic character of this association. Because of the semi-mesic environments and ultramafic soils that this forest association occurs on, some of the hardwood species present are prevented from attaining tree stature. The shrub form of <i>Notholithocarpus densiflorus</i> is the most common species in this layer. Other common shrubs include <i>Gaultheria shallon, Umbellularia californica, Vaccinium ovatum, Quercus chrysolepis</i>, and <i>Rhododendron occidentale</i>. The herbaceous layer only averages 8% cover and has very low species diversity. Only 6 species consistently achieve more than trace amounts of cover. <i>Polystichum munitum</i> and <i>Xerophyllum tenax</i> are the most common herbs. Ultramafic indicators are common among the herbs.  Accession Code: urn:lsid:vegbank.org:commConcept:28952-{87447DDA-5228-4D5A-9A85-9273BB66F780} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 01-Dec-1993 to: ongoing
	status: accepted Community's Parent: Chamaecyparis lawsoniana Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.689805 NatureServe Explorer   Code: CEGL000043   Translated: Port Orford-cedar - Douglas-fir / Tanoak / Salal Forest   Scientific: Chamaecyparis lawsoniana - Pseudotsuga menziesii / Notholithocarpus densiflorus / Gaultheria shallon Forest (convergence) and Synonyms: (similar) CEGL000043 (similar) Chamaecyparis lawsoniana - Pseudotsuga menziesii / Lithocarpus densiflorus / Gaultheria shallon Forest (similar) Chamaecyparis lawsoniana - Pseudotsuga menziesii / Lithocarpus densiflorus / Gaultheria shallon Forest