Distribution: Occuring west of the Cascades crest in southwestern Washington; southwestern Washington to California.
Habitat: Wet prairies and riparian forests.
Flowers: June-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Sensitive in Washington (WANHP)
Pollination: Wind
[none provided]
PNW Herbaria: Specimen records of Juncus patens in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Juncus patens checklist entry
OregonFlora: Juncus patens information
E-Flora BC: Juncus patens atlas page
CalPhotos: Juncus patens photos