Violet, Dogotanical: Viola canina (LINN.)
Family: N.O. Violaceae Parts Used: Leaves and flowers.
Description: The Dog Violet differs principally from the Sweet Violet in its long straggling stems and paler blue flowers. It possesses the same properties, being powerfully cathartic and emetic. At one time a medicine made from it had some reputation in curing skin diseases. It may be found on dry hedge-banks and in the woods, flowering from April to August, a longer flowering period than the Sweet Violet. It is a very variable plant in size of leaf and blossom, form of leaf and other parts, but there seem to be no permanent and reliable differences to justify the division into distinct subspecies. The root-stock of the Dog Violet is short and from it rises a tuft of leaves. The flowering stems are at first short, but as time goes on they elongate considerably until sometimes they may be found nearly a foot long. The leaves are heart-shaped and with serrated edges, but vary much in their proportions. They are ordinarily, like the stems, quite smooth, while in the Sweet Violet we often get them more or less covered with soft hairs. The flowers are scentless, generally larger than those of the Sweet Violet, not only paler in colour, but like most purple flowers, occasionally varying to white.
The popular name of this plant is a reproach for its want of perfume.