Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and eastern Canada.
Habitat: Shores, wet meadows, peatlands, springs, and ditches.
Flowers: June-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Wind
[none provided]
PNW Herbaria: Specimen records of Juncus longistylis in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Juncus longistylis checklist entry.
OregonFlora: Juncus longistylis information.
E-Flora BC: Juncus longistylis atlas page.
CalPhotos: Juncus longistylis photos.
USDA Plants: Juncus longistylis information.