Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains, northern Great Plains, northeastern North America, and Eurasia.
Habitat: Moist meadows and streambanks, low to mid-elevations in the mountains
Flowers: May - July
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bumblebees, bees, flies
Glabrous perennial from slender, widespread rhizomes, with creeping stolons, the petioles and peduncles rising from the rhizomes.
Leaf blades cordate to reniform, 2.5-3.5 cm. broad, with coarse, rounded teeth; petioles up to 15 cm. long; stipules chaffy, lanceolate, entire.
Flowers 10-13 mm. long, the peduncle about the same length as the leaves; petals white to lilac, the lower 3 purple-penciled, the lateral pair sparsely bearded; style head glabrous, lobed.
Fruit a 3-valved capsule, ovary superior, placentation parietal, seeds dark brown.
PNW Herbaria: Specimen records of Viola palustris in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Viola palustris checklist entry
OregonFlora: Viola palustris information
E-Flora BC: Viola palustris atlas page
CalPhotos: Viola palustris photos