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Bidens cernua Herbaceous Vegetation | Western Ecology Working Group of...
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Name: Bidens cernua Herbaceous Vegetation Reference: Western Ecology Working Group of... Description: From Christy (2004): Habitat of this herbaceous vegetation of western Oregon and Washington is low-elevation (2-152 m [8-500 feet]) marsh and mudflats along low-gradient streams and around shallow ponds. Soil is seasonally flooded to perennially saturated silt loam. The association is strictly herbaceous and dominated by <i>Bidens cernua</i> and a variety of other marsh species that tolerate early-season flooding and summer drying that exposes mudflats with subirrigation. Other typical species present in lesser amounts include <i>Polygonum hydropiperoides, Sagittaria latifolia, Eleocharis palustris, Ludwigia palustris</i>, and <i>Leersia oryzoides</i>, but more than 15 other species are recorded. This association was probably fairly widespread in the Willamette Valley prior to flood control but is now mostly restricted to the Columbia River floodplain in the Vancouver Basin. Prolonged pooling in depressions and freshwater tidal flooding along streams helps to keep invasive <i>Phalaris arundinacea</i> from invading stands.  Accession Code: VB.CC.33991.CEGL003324 Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2014 to: 01-May-2019
	status: Provisional This Community's Level: association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.687523 NatureServe Explorer   Translated: Nodding Beggarticks Herbaceous Vegetation   Scientific: Bidens cernua Herbaceous Vegetation   Code: CEGL003324