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Chamaecyparis lawsoniana - Pseudotsuga menziesii / Lithocarpus densiflorus / Gaultheria shallon Forest | Western Ecology Working Group of...
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Name: Chamaecyparis lawsoniana - Pseudotsuga menziesii / Lithocarpus densiflorus / Gaultheria shallon Forest Reference: Western Ecology Working Group of... 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 Chamaecyparis lawsoniana and Pseudotsuga menziesii. Taxus brevifolia and Lithocarpus densiflorus are also common, and there are more species of Pinus found in this association than any other Chamaecyparis lawsoniana association. Pinus attenuata, Pinus lambertiana, Pinus monticola, Arbutus menziesii, Umbellularia californica, Quercus chrysolepis, and Chrysolepis chrysophylla (= Castanopsis chrysophylla) 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 Lithocarpus densiflorus is the most common species in this layer. Other common shrubs include Gaultheria shallon, Umbellularia californica, Vaccinium ovatum, Quercus chrysolepis, and Rhododendron occidentale. The herbaceous layer only averages 8% cover and has very low species diversity. Only 6 species consistently achieve more than trace amounts of cover. Polystichum munitum and Xerophyllum tenax are the most common herbs. Ultramafic indicators are common among the herbs.  Accession Code: VB.CC.27510.CHAMAECYPARISLA Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Chamaecyparis lawsoniana Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Port Orford-cedar - Douglas-fir / Tanoak / Salal Forest   UID: ELEMENT_GLOBAL.2.689805 NatureServe Explorer   Code: CEGL000043   Scientific: Chamaecyparis lawsoniana - Pseudotsuga menziesii / Lithocarpus densiflorus / Gaultheria shallon Forest   Common: Port Orford-cedar - Douglas-fir / Tanoak - Salal (convergence) and Synonyms: (undetermined) Chamaecyparis lawsoniana - Pseudotsuga menziesii / Lithocarpus densiflorus / Gaultheria shallon Forest