Name:
Pseudotsuga menziesii - Abies grandis - Arbutus menziesii Forest & Woodland Alliance
Reference:
NatureServe Biotics 2019
Description:
This dry, mixed broadleaf-conifer forest alliance is typically dominated by the broadleaf evergreen <i>Arbutus menziesii</i> and <i>Pseudotsuga menziesii</i>. Some stands may have only <i>Pseudotsuga menziesii</i>. Other trees present may include <i>Abies grandis, Acer macrophyllum, Pinus contorta</i>, and <i>Quercus garryana</i>. Small amounts of <i>Tsuga heterophylla</i> or <i>Thuja plicata</i> may be present. The forest understory is usually species-rich and well-developed. Common shrub species include <i>Corylus cornuta var. californica, Gaultheria shallon, Holodiscus discolor, Lonicera hispidula, Symphoricarpos albus</i>, and <i>Vaccinium ovatum</i>. The herbaceous layer is usually well-developed and dominated by xerophytic grasses and forbs. <i>Festuca occidentalis, Elymus glaucus</i>, and <i>Bromus vulgaris</i> are typical grass species. <i>Vicia americana, Lathyrus nevadensis</i>, and <i>Sanicula crassicaulis</i> are common forbs. Ferns include <i>Polystichum munitum</i> and <i>Pteridium aquilinum</i>. This alliance occurs along low-elevation (0-1000 m) mountain slopes and valley margins, usually on southern exposures with ample sun and seasonal drought, often adjacent to saltwater shorelines. It is found in lowland areas of the Puget Sound as far south as the Klamath Mountains and northern Coast Ranges of California.
Accession Code:
urn:lsid:vegbank.org:commConcept:38930-{1AE3A1A0-D8E4-4B6A-AF0B-EF2BE4BD76B2}
Plot-observations of this Community Concept:
0
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