Although violet is the usual color of Viola sororia, a white form sometimes appears. This one was growing between the bricks of a sidewalk in Allegheny West.
For a description of the species, see the Viola sororia reference page.
Common Blue Violet (Viola sororia), White Form
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[…] to deep purple. We do, however, sometimes find flowers in a range of shades from pale lavender to pure white, as well as flowers with white flecks. Most of these flowers were blooming in a lawn in Highland […]