Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California.
Habitat: Lawns, sidewalks, wastelots, and other disturbed areas at low elevations.
Flowers: March-September
Origin: Introduced from Eurasia and northwest Africa
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bumblebees, bees, flies
[none provided]
PNW Herbaria: Specimen records of Viola riviniana in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Viola riviniana checklist entry
OregonFlora: Viola riviniana information
E-Flora BC: Viola riviniana atlas page
CalPhotos: Viola riviniana photos