Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge to Klickitat County in Washington; southwestern British Columbia to California and Mexico.
Habitat: Wet prairies, shores, springs, vernal pools, and ditches.
Flowers: June-September
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Wind
[none provided]
PNW Herbaria: Specimen records of Juncus occidentalis in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Juncus occidentalis checklist entry.
OregonFlora: Juncus occidentalis information.
E-Flora BC: Juncus occidentalis atlas page.
CalPhotos: Juncus occidentalis photos.
USDA Plants: Juncus occidentalis information.