Distribution: Reported for Washington, but no specimens seen; British Columbia to Oregon.
Habitat: Flowing streams or quiet waters.
Flowers: June-August
Origin: Introduced from Europe
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Wind
[none provided]
PNW Herbaria: Specimen records of Callitriche brutia var. hamulata in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Callitriche brutia var. hamulata checklist entry.
OregonFlora: Callitriche brutia var. hamulata information.
E-Flora BC: Callitriche brutia var. hamulata atlas page.
CalPhotos: Callitriche brutia var. hamulata photos.
USDA Plants: Callitriche brutia var. hamulata information.