Viola riviniana, the common dog-violet, is a species of flowering plant in the family Violaceae, native to Eurasia and Africa. It is also called wood violet

Viola riviniana was voted the county flower of Lincolnshire in 2002, following a poll by the wild plant conservation charity Plantlife.

Distribution

Common in Ireland and all the British Isles.

Wildlife value

It is the food plant of the pearl bordered fritillary, small pearl-bordered fritillary, silver-washed fritillary and high brown fritillary butterflies.

It is a known host of the pathogenic fungus Puccinia violae.

Similar species

  • Viola odorata (sweet violet) – fragrant; all the leaves are located at the base of the plant; stipules are gland-tipped
  • Viola canina (heath dog violet) – clear blue flowers; narrower leaves; smaller teeth on the stipules
  • Viola palustris (marsh violet) – found in wet places; leaves are kidney-shaped; grows from underground creeping stems; dark-veined flowers; stipules without teeth
  • Viola labradorica (alpine violet) – V. riviniana is sometimes sold by nurseries as V. labradorica

Hybrids

This species hybridises with early dog-violet (V. reichenbachiana) to produce Viola × bavarica.

References

Further reading

  • Partridge, James (2007) Viola × bavarica: the punctual Dog-violet BSBI News 106:8–9 (illustrated with colour photographs on inside back cover of this edition)