Distribution: Occurrng east of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east across most the the U.S., and in Ontario, to the Atlantic Coast.
Habitat: Wet places and muddy shores.
Flowers: June-August
Origin: Native
Growth Duration: Annual
Conservation Status: Sensitive in Washington (WANHP)
[none provided]
PNW Herbaria: Specimen records of Rotala ramosior in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Rotala ramosior checklist entry.
OregonFlora: Rotala ramosior information.
E-Flora BC: Rotala ramosior atlas page.
CalPhotos: Rotala ramosior photos.
USDA Plants: Rotala ramosior information.