Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Idaho.
Habitat: Ponds, lakes, slow-moving streams.
Flowers: July-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Wind
[none provided]
PNW Herbaria: Specimen records of Callitriche marginata in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Callitriche marginata checklist entry
OregonFlora: Callitriche marginata information
E-Flora BC: Callitriche marginata atlas page
CalPhotos: Callitriche marginata photos