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CEGL003424 Festuca rubra - (Argentina egedii) Salt Marsh

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Red Fescue - (Pacific Silverweed) Salt Marsh

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This association is a high intertidal marsh that occurs only in Washington (southern Puget Lowlands, Grays Harbor, and Willapa Bay) and perhaps formerly as far north as southern British Columbia. It is reported to occur primarily on silty substrates or peat soils and relatively low salinity. The dense herbaceous vegetation is dominated or codominated by the grass Festuca rubra. Other species that are frequently present and that can be locally codominant include Deschampsia cespitosa, Juncus arcticus ssp. littoralis, and Argentina egedii. This association is best distinguished from other Washington salt marsh associations by the dominance of Festuca rubra.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: While other high salt marsh associations may have a smattering of Festuca rubra, only this one is dominated by the species. British Columbia ecologists say they have not seen this community as described, but it may have formerly occurred in the Georgia Basin where salt marshes have been highly altered and declined.

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

Physiognomy and Structure: No Data Available

Floristics: The dense herbaceous vegetation is dominated or codominated by the grass Festuca rubra. Other species that are frequently present and that can be locally codominant include Deschampsia cespitosa, Juncus arcticus ssp. littoralis (= Juncus balticus), and Argentina egedii. This association is best distinguished from other Washington salt marsh associations by the dominance of Festuca rubra.

Dynamics:  No Data Available

Environmental Description:  This association is a high intertidal marsh that occurs only in Washington (southern Puget Lowlands, Grays Harbor, and Willapa Bay) and perhaps formerly as far north as southern British Columbia. It is reported to occur primarily on silty substrates or peat soils and relatively low salinity.

Geographic Range: This association is known only from the southern Puget Lowlands and Grays Harbor of Washington.

Nations: CA?,US

States/Provinces:  BC?, WA




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G1

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: ? Festuca rubra - Agrostis alba - Potentilla pacifica community (Kunze and Cornelius 1982) [p. 152.]
? Festuca rubra community (Dethier 1990) [p. 37.]
? Festuca rubra community (Kunze 1984)

Concept Author(s): C.B. Chappell

Author of Description: C.B. Chappell

Acknowledgements: No Data Available

Version Date: 10-18-02

  • Dethier, M. N. 1990. A marine and estuarine habitat classification system for Washington State. Washington Natural Heritage Program, Department of Natural Resources, Olympia, WA. 56 pp.
  • Kunze, L. M. 1984. Puget Trough coastal wetland sanctuaries: A summary report of recommended sites. Report to Washington Department of Ecology, Contract No. C-83061. Washington Natural Heritage Program, Washington Department of Natural Resources, Olympia.
  • Kunze, L. M., and L. C. Cornelius. 1982. Baseline inventory of rare, threatened and endangered plant species/communities along Washington''s Pacific Coast. Report to Washington Department of Ecology and National Oceanic and Atmospheric Administration, Coastal Zone Management Grant No. G82-029. Washington Natural Heritage Program, Olympia. 164 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.