Distribution: Occurring west of the Cascades crest in Washington; British Columbia to Oregon, east to Idaho, Montana, and Wyoming; also in the northeastern U.S.
Habitat: Shallow water, ditches, and marshy areas.
Flowers: May-July
Origin: Introduced from Europe
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Bees, flies, butterflies
[none provided]
PNW Herbaria: Specimen records of Nasturtium microphyllum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Nasturtium microphyllum checklist entry
OregonFlora: Nasturtium microphyllum information
E-Flora BC: Nasturtium microphyllum atlas page
CalPhotos: Nasturtium microphyllum photos