Chris Gomersall / 2020VISION / Common dog violet (Viola riviniana) in flower, Gamlingay Wood, Cambridgeshire, England, UK, April

Jim Brandenburg / Violet Wood-sorrel (Oxalis violacea) flower, Minnesota

Alex Hyde / Wood Violet / Common Dog Violet (Viola riviniana) flowering in deciduous woodland. Yorkshire Dales National Park, UK, April.

Chris Gomersall / 2020VISION / Common dog violet (Viola riviniana) in flower, Gamlingay Wood, Cambridgeshire, England, UK, April

Chris Gomersall / 2020VISION / Common dog violet (Viola riviniana) in flower, Gamlingay Wood, Cambridgeshire, England, UK, April. Did you know? In Medieval times the dog violet was used as deodorant.

Philippe Clement / Wood Violet / Common Dog Violet (Viola riviniana) in flower. Luxembourg, April.

Orsolya Haarberg / Two-flowered violet (Viola biflora) Norway

Inaki Relanzon / Yellow Wood Violet, (Viola biflora). Vallee d' Eyne Reserve Naturel, Haute Cerdagne, Pyrenees Orientales, Languedoc Roussillon, France. June

Wild Wonders of Europe / Giesbers / Yellow wood violet (Viola biflora) flower, Liechtenstein, June 2009

Philippe Clement / Yellow wood / Arctic yellow violet {Viola biflora} Gran Paradiso NP, Italy

Philippe Clement / Yellow wood violet {Viola biflora} Gran Paradiso NP, Italy.

Philippe Clement / Yellow wood / Arctic yellow violet {Viola biflora} flowers and fern fronds. Gran Paradiso NP, Alps, Italy

Jim Brandenburg / Violet Wood Sorrel (Oxalis violacea), tallgrass prairie, Minnesota.

Dr. Axel Gebauer / Yellow wood violet (Viola biflora), mosses and liverwort, Mugetso lake area, Sichuan Province, Tibet, China