Dog violet

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Viola labradorica, a common weed.

Dog violet is the common name for various species of the plant genus Viola with unscented flowers. The term arose to differentiate them from the scented sweet violet. Species so named include:

The roots and seeds of this plant are toxic and should not be eaten. A number of species in the genus Erythronium in the family Liliaceae are sometimes referred to as "dog's-tooth violet".