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CEGL000550 Quercus garryana / Elymus glaucus Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Oregon White Oak / Blue Wildrye Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This is a deciduous riparian woodland association found below lower timberline in the eastern Cascades near the Columbia River gorge, and in interior valleys of northern California. These sites occur along streams generally between 400 and 915 m (1300-3000 feet) elevation. The existing vegetation is characterized by an open to closed Quercus garryana layer occasionally with scattered taller Populus balsamifera ssp. trichocarpa or Pinus ponderosa trees. Rosa woodsii or Prunus virginiana may be present often in patches but are never in abundance. The herbaceous layer is graminoid-dominated primarily of Elymus glaucus. The exotics Poa pratensis or Bromus tectorum can be abundant in disturbed stands.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: The existing vegetation is characterized by an open to closed Quercus garryana layer occasionally with scattered taller Populus balsamifera ssp. trichocarpa or Pinus ponderosa trees. Rosa woodsii or Prunus virginiana may be present often in patches but are never in abundance. The herbaceous layer is graminoid-dominated primarily of Elymus glaucus. The exotics Poa pratensis or Bromus tectorum can be abundant in disturbed stands.

Dynamics:  No Data Available

Environmental Description:  Sites occur along streams generally between 400 and 915 m (1300-3000 feet) elevation.

Geographic Range: This associationis restricted to a narrow zone in two counties in Washington, one in Oregon. It is also found in northern California.

Nations: US

States/Provinces:  CA, OR, WA




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G1G2

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Quercus garryana / Elymus glaucus Association (John and Tart 1986)

Concept Author(s): R.C. Crawford

Author of Description: R.C. Crawford

Acknowledgements: No Data Available

Version Date: 11-26-97

  • Bourgeron, P. S., and L. D. Engelking, editors. 1994. A preliminary vegetation classification of the western United States. Unpublished report. The Nature Conservancy, Western Heritage Task Force, Boulder, CO. 175 pp. plus appendix.
  • John, T., and D. Tart. 1986. Forested plant associations of the Yakima Drainage within the Yakama Indian Reservation. Review copy prepared for the Yakama Indian Nation - BIA-SCS.
  • Kagan, J. S., J. A. Christy, M. P. Murray, and J. A. Titus. 2004. Classification of native vegetation of Oregon. January 2004. Oregon Natural Heritage Information Center, Portland. 52 pp.
  • WNHP [Washington Natural Heritage Program]. 2018. Unpublished data files. Washington Natural Heritage Program, Department of Natural Resources, Olympia, WA.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.