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Festuca roemeri - Cerastium arvense - Koeleria macrantha Herbaceous Vegetation | Western Ecology Working Group of...
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Name: Festuca roemeri - Cerastium arvense - Koeleria macrantha Herbaceous Vegetation Reference: Western Ecology Working Group of... Description: This grassland association occurs only in the Puget Lowland of western Washington and the Georgia Basin of southwestern British Columbia, primarily in the rainshadow of the Olympic Mountains and Vancouver Island mountains from sea level to 625 m elevation. Stands are confined to very dry sites that are typically very shallow to bedrock, and on southern to western aspect slopes. It probably burned relatively frequently in pre-European settlement times, and its continued survival on at least some sites is dependent on disturbance to remove trees. This medium-tall bunch grassland has variable cover of forbs, mosses and lichens. Scattered trees are sometimes present, especially Pseudotsuga menziesii, and scattered dwarf-shrubs sometimes occur, especially Mahonia aquifolium. Festuca roemeri (= Festuca idahoensis var. roemeri) is always present and usually dominant, though Danthonia californica or Festuca rubra (native varieties) are sometimes codominant and occasionally dominant, especially on sites moderately impacted by past grazing. The moss Racomitrium canescens and the clubmoss Selaginella wallacei are usually present and often have high percent cover. Of the many herbaceous species that occur, the following have high constancy: Koeleria macrantha, Elymus glaucus, Cerastium arvense, Achillea millefolium, Allium acuminatum, Eriophyllum lanatum, and Zigadenus venenosus. This association is distinguished from similar associations by >10% combined cover of Festuca roemeri, native Festuca rubra, and Danthonia californica, along with the presence of Cerastium arvense, Selaginella wallacei, or Elymus glaucus, in combination with the presence of at least one of the following: Camassia quamash, Aspidotis densa, Koeleria macrantha.  Accession Code: VB.CC.22484.FESTUCAROEMERIC Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 01-Feb-2001 to: 17-Nov-2014
	status: accepted Community's Parent: Festuca roemeri Herbaceous Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Roemer's Fescue - Field Chickweed - Prairie Junegrass Herbaceous Vegetation   Scientific: Festuca roemeri - Cerastium arvense - Koeleria macrantha Herbaceous Vegetation   Code: CEGL003349   UID: ELEMENT_GLOBAL.2.687118 NatureServe Explorer (convergence) and Synonyms: (undetermined) Festuca roemeri - Cerastium arvense - Koeleria macrantha Herbaceous Vegetation