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Alnus incana / Lysichiton americanus Wet Shrubland | NatureServe Biotics 2019
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Name: Alnus incana / Lysichiton americanus Wet Shrubland
Reference: NatureServe Biotics 2019
Description: This association is found between 573 to 1098 m (1880-3600 feet) elevation in maritime climate-influenced areas along both the western and eastern slopes of the Cascades in Washington and Oregon, and in the southern end of the Canadian Rockies of northeastern Washington and far northern Idaho. It is a wet association almost totally restricted to low-gradient sites, predominantly found in moderate width valleys. It is most commonly found in wetlands along pond and lake margins, on organic loam and muck soils with up to 50% of the surface flooded during the spring. <i>Alnus incana</i> (8-10 m tall) dominates this association with 30-70% cover, although <i>Cornus sericea</i> and <i>Spiraea douglasii</i> commonly occur with moderate constancy and cover. <i>Thuja plicata</i> often occurs, but with low cover, and its presence may indicate a potential successional pathway for the stand. The only forb with high cover is <i>Lysichiton americanus</i>, about 10-40% cover. <i>Athyrium filix-femina, Circaea alpina, Equisetum</i> spp., <i>Viola</i> spp., and other forbs or ferns with low to moderate cover may form a ground layer. The only graminoids with high constancy (but low cover) are <i>Glyceria striata</i> and <i>Phalaris arundinacea</i>. Moderate ground cover of moss, including <i>Sphagnum</i> spp., is sometimes observed. 
Accession Code: urn:lsid:vegbank.org:commConcept:31537-{A5F23FBC-0797-40D3-80CD-DF38CF896DC2}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 18-Oct-2002 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.688229 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL002629
  Translated: Gray Alder / Yellow Skunk-cabbage Wet Shrubland
  Scientific: Alnus incana / Lysichiton americanus Wet Shrubland
(convergence) and Synonyms:
(similar) CEGL002629
(similar) Alnus incana / Lysichiton americanus Shrubland
(similar) Alnus incana / Lysichiton americanus Shrubland