 Crater lichen Diploschistes scruposus on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Crater lichen Diploschistes scruposus at the foot of granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Crater lichen Diploschistes scruposus together with dark-brown lichen on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Crater lichen Diploschistes scruposus on a granite cliff in Monrepos Park in Vyborg. Russia, May 24, 2019
 Diploschistes lichen on granite in Monrepos Park in Vyborg. Russia, May 24, 2019
 Buellia(?) lichen on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Cladonia lichen at the foot of granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Some black Buellia(?) lichen on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Some brown Acarospora(?) lichen on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Some crustose lichen at the foot of granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Black Lecanora like lichen on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Yellowish dust-like lichen at the foot of granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Some grey folios lichen at the foot of granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Some grey sorediate Parmelia(?) lichen on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Thick crust of some greenish lichen on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Black apothecia of Lecanora like lichen on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Small foliose lichen Cladonia incrassata(?) on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Yellow map lichen (Rhizocarpon geographicum) at the foot of granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Dark brown Acarospora(?) lichen at the foot of granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Yellowish dust-like lichen Trapeliopsis(?) at the foot of granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Salted shield lichen (crottle, Parmelia saxatilis)(?) on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Black hair like velvet lichen Cystocoleus ebeneus or may be Ephebe lanata at the foot of granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Song of Vainamoinen sculpture below granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Yellow map lichen (Rhizocarpon geographicum) on granite in Monrepos Park in Vyborg. Russia, May 24, 2019
 Yellowish dust-like lichen on vertical granite surface in Monrepos Park in Vyborg. Russia, May 24, 2019
 Salted shield lichen (crottle, Parmelia saxatilis) on granite in Monrepos Park in Vyborg. Russia, May 24, 2019
 Green Cladonia(?) lichen at the base of a pine below cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
 Close up of yellow map lichen (Rhizocarpon geographicum) in Monrepos Park in Vyborg. Russia, May 24, 2019
 Granite grotto in Monrepos Park in Vyborg. Russia, May 24, 2019
 Road at foot of granite cliff in Monrepos Park in Vyborg. Russia, May 24, 2019
 Trumpet like Cladonia lichen in moss in Monrepos Park in Vyborg. Russia, May 24, 2019
 Railroad from a bridge above granite cliffs in Vyborg. Russia, May 24, 2019
 Close up of grey folios lichen on a granite stone near the gulf in Sobstvennaya Dacha Park. Old Peterhof, west from Saint Petersburg, Russia, May 17, 2019
 Close up of map lichen Rhizocarpon petraeum on a granite stone in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Close up of some grey lichen with black apothecia on a granite tombstone in City Cemetery. Bryan, Texas, March 3, 2019
 Close up of rock shield lichen (Xanthoparmelia) on a granite tombstone in old Port Sullivan cemetery, west from Hearne. Texas, January 8, 2019
 Close up of blue-gray rosette lichen Physcia caesia on a granite stone in dunes near the lake south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 Lichen Diploschistes actinostomus(?) on sandstone near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Lichen Diploschistes actinostomus on sandstone near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Lichen Diploschistes actinostomus on a sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, October 13, 2019
 Lichen Diploschistes actinostomus(?) together with Caloplaca on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Lichen Diploschistes actinostomus on a sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Old granite walls behind Vyborg Castle. Vyborg, Russia, September 14, 2013
 Diploschistes actinostomus and stonewall rim-lichen (Lecanora muralis) on a sandstone near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Diploschistes actinostomus together with stonewall rim-lichen (Lecanora muralis) on a sandstone near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Mexican yolk lichen (Candelina submexicana) together with granite rosette lichen (Physcia halei) at the edge of a granite stone in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Grey folios lichen on a granite stone near the gulf in Sobstvennaya Dacha Park. Old Peterhof, west from Saint Petersburg, Russia, May 17, 2019
 Granite rocks in Monrepo Park. Vyborg, Russia, May 27, 2011
 Granite fence of Monrepo park. Vyborg, Russia, August 12, 2012
 Granite stones in Monrepo Park. Vyborg, Russia, September 1, 2007
 Granite rocks in Monrepo Park. Vyborg, Russia, September 1, 2007
 Granite stones in Monrepo park. Vyborg, Russia, August 12, 2012
 Granite wall near Monrepo (Mon Repos) Park. Vyborg, Russia, September 10, 2016
 Large granite stones in Monrepo (Mon Repos) Park. Vyborg, Russia, June 23, 2017
 Close up of button lichen (Buellia) on a polished granite surface of Bible on a tomb in Odd Fellow Cemetery. Anderson, Texas, December 31, 2018
 Granite boulders in Monrepo (Mon Repos) Park near Malaya Vodyanaya Street. Vyborg, Russia, September 14, 2013
 Granite wall in Monrepo (Mon Repos) Park. Vyborg, north from Saint Petersburg, Russia, October 7, 2016
 Granite stones in Monrepo (Mon Repos) Park. Vyborg, north from Saint Petersburg, Russia, October 7, 2016
 Texture of map lichen Rhizocarpon petraeum on a granite stone in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Swamp on a granite plateau in north-west area of Monrepo (Mon Repos) Park. Vyborg, Russia, September 14, 2013
 Granite dig out of old powder bunker in north-west area of Monrepo (Mon Repos) Park. Vyborg, Russia, September 14, 2013
 Forest on a granite plateau in north-west area of Monrepo (Mon Repos) Park. Vyborg, Russia, September 14, 2013
 Mossy granite pyramid in north-west area of Monrepo (Mon Repos) Park. Vyborg, Russia, September 14, 2013
 Circular patterns of map lichen Rhizocarpon petraeum on a granite stone in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Dust lichen (Lepraria) in shade of cliffs in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Rock foam lichen (Stereocaulon saxatile)(?) on a rough surface of a granite stone in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Entrance of granite hollow of old powder bunker in north-west area of Monrepo (Mon Repos) Park. Vyborg, Russia, September 14, 2013
 Dust lichen (Lepraria) on limestone in shade of cliffs in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Rock foam lichen (Stereocaulon saxatile) with other lichens on a large granite stone in a forest in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Some grey lichen on a granite tombstone in City Cemetery. Bryan, Texas, March 3, 2019
 Close up of leather lichen Dermatocarpon luridum in water seepage area on granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Some grey lichen together with Caloplaca on a granite tombstone in City Cemetery. Bryan, Texas, March 3, 2019
 Rosette lichen (Physcia) on a granite tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Granite stone in a courtyard at 12 Krepostnaya Street. Vyborg, Russia, June 21, 2014
 Granite gate with gargoyles near train station. Vyborg, Russia, August 12, 2012
 Pattern of rosette lichen (Physcia) on a granite tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Some grey lichen with black apothecia on a granite tombstone in City Cemetery. Bryan, Texas, March 3, 2019
 Blue-gray rosette lichen Physcia caesia on a granite stone in dunes near the lake south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 Salted shield lichen (crottle, Parmelia saxatilis) on a granite stone in dunes near the lake south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 One of granite bears from a demolished train station near Intendantsky Proezd. Vyborg, Russia, June 21, 2014
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tombstone in City Cemetery. Bryan, Texas, March 3, 2019
 Rock shield lichen (Xanthoparmelia) on a granite tombstone in old Port Sullivan cemetery, west from Hearne. Texas, January 8, 2019
 Texture of blue-gray rosette lichen Physcia caesia on a granite stone in dunes near the lake south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 Apothecia of peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Texture of peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Pattern of peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tomb in City Cemetery. Bryan, Texas, March 3, 2019
 One of granite bears from a demolished train station on a children s playground near Intendantsky Proezd. Vyborg, Russia, June 21, 2014
 Perforated ruffle lichen (Parmotrema perforatum) on a granite tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Grey crustose lichen Aspicilia with firedot lichen Caloplaca on granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Common grey crustose lichen Aspicilia (sunken disk lichen) on granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Grey crustose lichen Aspicilia with orange firedot lichen Caloplaca on granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Diploschistes actinostomus(?) together with other lichens near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Diploschistes actinostomus(?) and other lichens near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Firedot lichen Caloplaca subsoluta (Caloplaca irrubescens) on a granite tombstone in old Port Sullivan cemetery, west from Hearne. Texas, January 8, 2019
 Cliffs of Nahal Ardon river in Ramon Crater just before sunset. The Middle East, February 9, 2002
 Gold cobblestone lichen Pleopsidium flavum(?) mixed with a grey crustose lichen on granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Cracked lichen Acarospora novomexicana (yellow) and firedot lichen Caloplaca appressa(?) (red) on granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Close up of Physcia lichen with brown apothecia in Lick Creek Park. College Station, Texas, February 3, 2019
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