Wild Wonders of Europe / della F / Lichens growing on a Blackthorn (Prunus spinosa) near Zadrzani village, Northern Livanjsko Polje, Bosnia and Herzegovina, May 2009

Jack Dykinga / Lichen covered rocks at Marble Viewpoint, Kaibab National Forest, Grand Canyon National Park, Arizona, USA

Jack Dykinga / Lichen covered rocks at Marble Viewpoint, Kaibab National Forest, Grand Canyon National Park, Arizona, USA

Wild Wonders of Europe / E. Haarberg / Lichen growing on a tree trunk, Bergslagen, Sweden, April 2009

Wild Wonders of Europe / O. Haarberg / Lichen covered rocks on coast, Lngviksskr, Stockholm Archipelago, Sweden, June 2009

Jason Smalley / Close-up of mosses and lichens on gravestone, UK.

Mark Hamblin / 2020VISION / Lichen on rock, The Stiperstones National Nature Reserve, Shropshire, UK

Adrian Davies / Lichen encrusted gravestone in churchyard, Slapton, Devon, England, UK, July.

Nick Upton / Black lichen (Lichina pygmaea) growing on rocks alongside Montagu's stellate barnacles (Chthamalaus montagui) high on the shore, Wembury, Devon, UK, August.

Nick Upton / Black lichen (Lichina pygmaea) growing on rocks alongside Montagu's stellate barnacles (Chthamalaus montagui) high on the shore, Wembury, Devon, UK, August.

Nick Upton / Black lichen (Lichina pygmaea) covering barnacle encrusted rocks high on the shore, Wembury, Devon, UK, August.

Nick Upton / Black lichen (Lichina pygmaea) growing on rocks alongside Montagu's stellate barnacles (Chthamalaus montagui) high on the shore, Wembury, Devon, UK, August.

Nick Upton / Black lichen (Lichina pygmaea) growing on rocks alongside Montagu's stellate barnacles (Chthamalaus montagui) high on the shore, Wembury, Devon, UK, August.

Alex Hyde / Lichen (Cladonia diversa) showing red apothecia (spore-producing structures). Cairngorms National Park, Grampian Mountains, Scotland, UK, February.

Alex Hyde / Lichen (Parmelia saxatilis) growing on gravestone in churchyard. Peak District National Park, Derbyshire, UK, March 2012.

Guy Edwardes / 2020VISION / Lichen covered branches in canopy of Oak woodland. Perthshire, Scotland, UK.

Guy Edwardes / 2020VISION / Lichen covered tree branches. New Forest National Park, Hampshire, England, UK, March.

Laurie Campbell / Community of Lichens and Mosses growing together on upland wet heath habitat, Inverness-shire, Scotland, September

Chris Gomersall / 2020VISION / Close-up of Reindeer moss (Cladonia rangiferina), Frensham Common Nature Reserve, Surrey, England, UK, April

MYN / Piotr Naskrecki / British soldier lichen (Cladonia crisyatella) Concord, Massachusetts, USA, May. meetyourneighbours.net project

Adrian Davies / Christmas / Blood Lichen (Cryptothecia rubrocinta). Corkscrew Swamp Sanctuary, Naples, Florida, USA, January.

Robert Thompson / Lichen (Cladonia ficerkeana) with red spore producing reproductive structures, Killarney National Park, County Kerry, Republic of Ireland, April

Guy Edwardes / Lichen growing on rock, Sutherland, Scotland, May

Robert Thompson / Lichen {Baeomyces rufus} (coloured red) growing on rocks near the summit, Slieve Gullion Forest Park, Meigh, County Armagh, Northern Ireland, UK, January

Robert Thompson / Lichen {Arthonia cinnabarina} Crom Estate, County Fermanagh, Northern Ireland, March

Robert Thompson / Lichen {Cladonia polydactyla} Ballymote, County Sligo, Republic of Ireland, February

Robert Thompson / Lichen {Bacidia rubella} (coloured red) growing on rock, Crom Estate, County Fermanagh, Northern Ireland, March

Robert Thompson / Lichen {Cladonia ramulosa} Rehaghy Mountain, County Tyrone, Republic of Ireland, January.

Robert Thompson / Lichen {Botryoleparari lesdainii} on rocks, Crom Estate, County Fermanagh, Northern Ireland, March

Robert Thompson / Lichen {Cladonia portentosa} Rehaghy Mountain, County Tyrone, Republic of Ireland, January

Robert Thompson / Lichen {Cladonia uncialis subsp. biuncialis} Fawhaboy, County Donegal, Republic of Ireland, March

Robert Thompson / Lichen {Cladonia cervicornis subsp. verticillata} Fawhaboy, County Donegal, Republic of Ireland, March

Robert Thompson / Lichen {Chrysothrix candelaris} Tollymore Forest, County Down, Northern Ireland, January

Robert Thompson / Lichen {Cladonia foliacea} Northern Ireland

Robert Thompson / Lichen {Cladonia cervicornis subsp. verticillata} Fawhaboy, County Donegal, Republic of Ireland, March

Robert Thompson / Lichen {Cladonia portentosa} Rehaghy Mountain, County Tyrone, Republic of Ireland, January

Robert Thompson / Lichen {Bacidia viridifarinosa} (coloured green) growing on rock, Crom Estate, County Fermanagh, Northern Ireland, March

Robert Thompson / Lichen {Cladonia portentosa} Argory Estate, County Armagh, Northern Ireland, December

Wild Wonders of Europe / Hermansen / Ornithocoprophile lichens on rocks, Saltee Islands, County Wexford, Republic of Ireland, June 2009

Wild Wonders of Europe / Hermansen / Ornithocoprophile lichens growing on rock, Saltee Islands, County Wexford, Republic of Ireland, June 2009

Wild Wonders of Europe / Relanzón / Lichens growing on rock, Timanfaya National Park, Lanzarote, Canary Islands, Spain, March 2009

Wild Wonders of Europe / Relanzón / Lichen on rock, Malpaís de corona, North Lanzarote, Canary Islands, Spain, March 2009

Wild Wonders of Europe / Relanzón / Lichen on rock, Malpaís de corona, North Lanzarote, Canary Islands, Spain, March 2009

Wild Wonders of Europe / Müller / Fallen Beech leaves and Lichens on the forest floor, Pollino National Park, Basilicata, Italy, November 2008

Wild Wonders of Europe / Müller / Lichen growng on European beech tree (Fagus sylvatica) trunk, Pollino National Park, Basilicata, Italy, November 2008

Wild Wonders of Europe / Müller / Lichen growing on European beech tree trunk (Fagus sylvatica) Pollino National Park, Basilicata, Italy, November 2008

Wild Wonders of Europe / Müller / Moss and lichen growing on European beech (Fagus sylvatica) trunk, Pollino National Park, Basilicata, Italy, November 2008

Wild Wonders of Europe / Krahmer / Lichen on rock, Haute Savoie, France, Europe, September 2008

Wild Wonders of Europe / Widstrand / Lichen growing on rock, La Serena, Extremadura, Spain, March 2009

Wild Wonders of Europe / Müller / Moth and Lichen on tree trunk, Pollino National Park, Basilicata, Italy, November 2008

Wild Wonders of Europe / Müller / Moth and lichen on tree trunk, Pollino National Park, Basilicata, Italy, November 2008

Konstantin Mikhailov / Cladonia sp lichen growing in Russky Sever NP, Vologda Oblast, N Russia, October 2008

Konstantin Mikhailov / Cladonia sp lichen growing in Russky Sever NP, Vologda Oblast, N Russia, October 2008

Konstantin Mikhailov / White Reindeer moss {Caldonia rangiferina}, near the White Sea, Karelia, N Russia, September 2007.

Niall Benvie / Lichen community on a mountain boulder, Wester Ross, Scotland, October

Niall Benvie / Lichen community on a mountain boulder, Wester Ross, Scotland, October

Russell Cooper / Pixie cup lichen {Cladonia sp} with fruiting bodies, UK

Chris O'Reilly / Lichen {Cladonia rangiformis} heathland, Wales

Niall Benvie / Fruiting bodies of lichen (Cladonia sp) Scotland. Tomatin, Inverness-shire

DOMINIC JOHNSON / Reindeer moss lichen (Cladonia rangiferina) and Liverwort, Siberia, Russia

Duncan Mcewan / Mised Lichens on Gravestone, Glen Spean, Inverness-shire, Scotland

Duncan Mcewan / Lichen {Cladonia sp} on tree branch, Inverness-shire Scotland

Duncan Mcewan / Lichens {Cladonia spp} on moorland, Inverness-shire, Scotland

Pete Oxford / Lichen on rocks, Namaqualand, South Africa

Niall Benvie / Lichens covering a rock, West Water, Edrell, Scotland

Ross Hoddinott / Yellow scale lichen on roof tiles, UK.

Martin Gabriel / Lichen on stone, Namibia

Ian McCarthy / Ancient lichen growing on rock, Marion Island, Prince Edward Is, sub-antarctica

Jeff Vanuga / Lichen growing on obsidian rock, Obsidian Cliffs, Yellowstone NP, Wyoming, USA.

Tony Evans / Lichens on rock

Tony Evans / Lichens on rock, Wales, UK

Ross Hoddinott / Close up of cups of Lichen {Cladonia fimbriata} UK

Niall Benvie / Lichen community (mixed species) Golspie, Sutherland, Scotland, UK

Niall Benvie / Lichen on bark. Glen Cannich, Scotland, Europe