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Bidens cernua Mudflat | NatureServe Biotics 2019
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Name: Bidens cernua Mudflat
Reference: NatureServe Biotics 2019
Description: 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: urn:lsid:vegbank.org:commConcept:32206-{44D8C922-F7F8-430E-90ED-05DFDCA1C573}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 10-Jun-2006 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.687523 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL003324
  Translated: Nodding Beggarticks Mudflat
  Scientific: Bidens cernua Mudflat
(convergence) and Synonyms:
(similar) Bidens cernua Herbaceous Vegetation