Salix sitchensis Provisional Shrubland Alliance
Sitka willow thickets

Summary Information

  • Primary Life FormShrub
  • Elevation0-400 m
  • State RarityS3?
  • Global RarityG4
  • DistributionCAN: AB, BC. USA: AK, CA, ID, MT, OR, WA (USDA Plants)
  • Endemic to CaliforniaNo
  • Endemic to California Floristic Province and DesertsNo
  • Date Added1995/11/01

Characteristic Species

Salix sitchensis is dominant in the tall shrub or low tree canopy with Acer macrophyllum, Alnus rubra, Cornus sericea, Populus trichocarpa, Rubus spp., Salix spp. and Sambucus nigra. As a shrubland, emergent trees may be present at low cover.

Vegetation Layers

Shrubs < 7 m; canopy is continuous. Shrubs are sparse under tree canopy. Herbaceous layer is variable.


Tidal swamps and coastal streams. The USFWS Wetland Inventory (1996 national list) recognizes Salix sitchensis as a FACW+ plant.

Other Habitat, Alliance, and Community Groupings

MCV (1995) Sitka willow series
NVCS (2009) Salix sitchensis seasonally flooded shrubland alliance
Calveg Willow, Willow-Alder
Holland Freshwater swamp, North Coast riparian forests, Central Coast riparian scrub
Munz Freshwater marsh
WHR Fresh emergent wetland
CDFW CA Code 61.206.00