LYNN M. STONE / Beagle hound in wild purple Violets, Arcadia, Wisconsin, USA

Angelo Gandolfi / Violets (Viola sp), Sila National Park, Calabria, Italy, June.

Angelo Gandolfi / Violets (Viola sp), Sila National Park, Calabria, Italy, June.

Angelo Gandolfi / Carpet of Purple and yellow violets (Viola sp) Sila National Park, Calabria, Italy. June 2013.

Angelo Gandolfi / Flower meadow with purple and yellow violets (Viola sp) Sila National Park, Macchialonga valley, Calabria, Italy. June 2013.

Stephen Dalton / Dog violets (Viola riviniana) Rookery Wood, Sussex, England, UK April.

Lynn M. Stone / Baby Netherland Dwarf rabbit sitting amongst pansies, USA.

Lynn M. Stone / Baby Netherland Dwarf rabbit sitting amongst pansies, USA.

Philippe Clement / Amethyst specimen, violet variety of quartz on white background

Stephen Dalton / Violets (Viola riviniana) Sussex, UK

Pal Hermansen / Flowers including wild Violas (Viola sp) on the coast of Stott Melloy, Nordland, Norway, July 2015.

LYNN M. STONE / Eastern box turtle (Terrapene carolina carolina) among blue violets woodland, Connecticut, USA

LYNN M. STONE / Eastern box turtle (Terrapene carolina carolina) on sphagnum moss and blue violets in woodland. Connecticut, USA

LYNN M. STONE / Eastern box turtle (Terrapene carolina carolina) on sphagnum moss, among Blue Violets, Connecticut, USA

LYNN M. STONE / Eastern box turtle (Terrapene carolina carolina) on sphagnum moss, among Blue Violets, Connecticut, USA

Rod Williams / Hairy Violets (Viola hirta) Hutchinson's Bank, New Addington, Croydon, South London, England, UK, April

Chris Mattison / Algae (Trentepohlia aurea) growing on Monterey cypress (Cupressus macrocarpa) trees in Point Lobos State Reserve, California, USA, June.. Monterey cypress is endemic to California.

Chris Mattison / Algae (Trentepohlia aurea) growing on Monterey cypress (Cupressus macrocarpa) trees in Point Lobos State Reserve, California, USA, June.. Monterey Cypress is endemic to California.

Cyril Ruoso / European Rabbit (Oryctolagus cuniculus) eating wild Violets, France, introduced worldwide

Stephen Dalton / Wild violets (Viola sp) Holly Farm, Sussex, England, UK, April

Alex Hyde / Primroses (Primula vulgaris) and Common Dog Violets (Viola riviniana) flowering in woodland clearing, Yorkshire Dales National Park, UK. April.

LYNN M. STONE / Beagle hounds in thick carpet of wild Violets, Arcadia, Wisconsin, USA

LYNN M. STONE / Beagle hound in violets and dandelions, Arcadia, Wisconsin, USA

LYNN M. STONE / Beagle hound in violets and dandelions, Arcadia, Wisconsin, USA

Stephen Dalton / Violets (Viola riviniana) in flower. Sussex, UK, April.

Adrian Davies / Algae {Trentepohlia} growing on tree trunk in Bluebell woodland, UK

Wild Wonders of Europe / Bartocha / Sweet violets (Viola odorata) in flower, Gargano National Park, Gargano Peninsula, Apulia, Italy, April 2008

Doug Wechsler / Rock violets alga (Trentepohliales) Point Reyes, California USA

Philippe Clement / Dames rocket / violet flowers {Hesperis matronalis} France

Philippe Clement / Sweet violet flower {Viola odorata} France

Tony Evans / Rock violet algae {Trentepohlia} growing on fence post. UK

Tony Evans / Common dog violets {Viola riviniana} UK

Tony Evans / Rock violet algae {Trentepohlia} growing on fence post. UK

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

LYNN M. STONE / Eastern box turtle and violets, Illinois, USA

Paul Harcourt Davies / Gargano pansies (Viola heterophylla graeca) in flower, nr San Giovanni Rotondo, Gargano Peninsula, Italy. April.

Paul Harcourt Davies / Gargano pansies (Viola heterophylla graeca) in flower in woodland clearing, nr San Giovanni Rotondo, Gargano Peninsula, Italy. April.

Paul Harcourt Davies / Gargano pansies (Viola heterophylla graeca) with Golden alyssum (Alyssum saxatile) in flower at edge of woodland, nr San Giovanni Rotondo, Gargano Peninsula, Italy. April.

Paul Harcourt Davies / Eugenia's pansies (Viola eugeniae) in flower, Monte Terminillo, Lazio, Italy. June.

Paul Harcourt Davies / Reichenbach's violet (Viola reichenbachiana) in flower in woodland, Umbria, Italy. March.

Nick Upton / Hairy violets (Viola hirta) flowering on a chalk grassland slope, Wiltshire, UK. March.

Nick Upton / Hairy violets (Viola hirta) flowering on a chalk grassland slope, Wiltshire, UK. March.

Linda Pitkin / Sweet violet (Viola odorata) in flower, Surrey, England. March.

Nigel Cattlin / Red rust (Cephaleuros sp.), a parasitic plant algae, on Black pepper (Piper nigrum) leaf surface, Thailand, South East Asia.

Nigel Cattlin / Red rust (Cephaleuros sp.), a parasitic plant algae, on Black pepper (Piper nigrum) leaf surface, Thailand, South East Asia.

Olga Kamenskaya / Altai pansy (Viola altaica) Valley of Petrified Clouds. Altai Republic, Russia

Lynn M. Stone / Raccoon (Procyon lotor) cub aged approximately five weeks sitting amongst Violets (Viola sp). Connecticut, USA. May.

Linda Pitkin / Common dog-violets (Viola riviniana) Selsdon Wood Nature Reserve, Surrey, England, April.

Linda Pitkin / Common dog-violets (Viola riviniana), growing wild in grassy area of garden. South Croydon, Surrey, England, April.

Linda Pitkin / Sweet violets (Viola odorata), Riddlesdown, Surrey, England, February.

Will Watson / Water Violets (Hottonia palustris), natural woodland pond, Shatsky National Natural Park, Volyn Oblast, Ukraine, May.

Will Watson / Orange Alga (Trentepohlia sp.) on damp rocks, Brecon Beacons National Park, Carmarthenshire, Wales, March.

Will Watson / Water Violets (Hottonia palustris), natural woodland pond, Shatsky National Natural Park, Volyn Oblast, Ukraine, May.

Erlend Haarberg / Wild pansy (Viola tricolor) with single Dandelion (Taraxacum sp) Innlandet, Norway, June.