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Alnus (incana, viridis ssp. sinuata) / Lysichiton americanus - Oenanthe sarmentosa Shrubland | Western Ecology Working Group of...
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Name: Alnus (incana, viridis ssp. sinuata) / Lysichiton americanus - Oenanthe sarmentosa Shrubland
Reference: Western Ecology Working Group of...
Description: This wetland association occurs only in a limited area of the central Puget Lowlands of Washington. It occurs along low-gradient or partially impounded stream systems or in impounded wetlands. Sites are seasonally flooded to permanently flooded with significant water-level fluctuation. Soils are composed of peat and muck. The deciduous tall-shrub canopy is dominated by either Alnus incana or Alnus viridis ssp. sinuata, apparently the latter more frequently. Other tall shrubs usually present are Salix spp. and Frangula purshiana, either of which can be locally codominant. The understory is usually codominated by Lysichiton americanus and one or more of the following graminoids: Carex utriculata, Carex aquatilis var. dives, Carex obnupta, Carex cusickii, and Calamagrostis canadensis. Oenanthe sarmentosa is almost always present. The combination of dominance of Alnus incana or Alnus viridis ssp. sinuata in the canopy with Lysichiton americanus and Oenanthe sarmentosa appears to be diagnostic. 
Accession Code: VB.CC.19920.ALNUSINCANAVIRI
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 01-Oct-2002 to: 17-Nov-2014
      Names:   Translated: (Speckled Alder, Sitka Alder) / Yellow Skunk-cabbage - Pacific Water-Dropwort Shrubland
  UID: ELEMENT_GLOBAL.2.683875 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL003293
  Scientific: Alnus (incana, viridis ssp. sinuata) / Lysichiton americanus - Oenanthe sarmentosa Shrubland
(convergence) and Synonyms:
(undetermined) Alnus (incana, viridis ssp. sinuata) / Lysichiton americanus - Oenanthe sarmentosa Shrubland