Distribution: Occurring west of the Cascades crest in southwestern Washington; southwestern Washington and adjacent northwestern Oregon.
Habitat: Damp mossy river rocks, near high water line, wet rocky slopes.
Flowers: June-July
Origin: Native
Growth Duration: Perennial
Conservation Status: Sensitive in Washington (WANHP)
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PNW Herbaria: Specimen records of Filipendula occidentalis in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Filipendula occidentalis checklist entry
OregonFlora: Filipendula occidentalis information
E-Flora BC: Filipendula occidentalis atlas page
CalPhotos: Filipendula occidentalis photos