Viola labradorica, commonly known as Alpine dog violet, Alpine violet, American dog violet, dog violet, and Labrador violet, is a perennial native to eastern Canada, Greenland, and the United States. The plant sold as Viola labradorica by nurseries is Viola riviniana.
Viola labradorica has edible leaves and flowers. The leaves are sometimes characterized as "wooly" and thus not as desirable for eating.
A purple-leaved form of the European dog-violet (Viola riviniana 'Purpurea Group'), is often sold by nurseries as Viola labradorica. The true Viola labradorica is almost never sold.
Viola riviana is grown as a flowering groundcover in gardens and as a house plant. It can become naturalized, or even an invasive species, when planted near adjacent native plant habitats and natural-wildland ecosystems.