Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Sloughs and slow-moving, fresh water.
Flowers: April-July
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Callitriche heterophylla var. heterophylla in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Callitriche heterophylla var. heterophylla checklist entry
OregonFlora: Callitriche heterophylla var. heterophylla information
E-Flora BC: Callitriche heterophylla var. heterophylla atlas page
CalPhotos: Callitriche heterophylla var. heterophylla photos