Some Viola species are perennial plants, some are annual plants, and a few are small shrubs.

See List of Viola species for a more complete list.

The larvae probably feed on Viola species and Willow in North America.

The larvae feed on various low growing plants, but prefer Viola species.

The larvae feed on Viola species.

Many Viola species and some Salvia have these types of flowers.

The Viola species that has been given the most attention as a bedding plant is V. cornuta.

The larva feeds on Viola species.

Actually these stems are just extremely short, the leaves appearing to rise directly out of the ground, e.g. some Viola species.

The caterpillars feed on Viola species and willows.