 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
 Rock foam lichen (Stereocaulon saxatile)(?) on a boulder in a forest in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Rock foam lichen (Stereocaulon saxatile)(?) in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Rock foam lichen (Stereocaulon saxatile)(?) on a boulder in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Rock foam lichen (Stereocaulon saxatile)(?) in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 22, 2021
 Woolly foam lichen (downy land coral, Stereocaulon tomentosum) between rocks on railroad bed near Orekhovo, 40 miles north from Saint Petersburg. Russia, September 9, 2016
 Buellia(?) lichen on a stone in a forest in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Black apothecia of Buellia(?) lichen on a stone in a forest in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Peppered rock tripe lichen (Umbilicaria deusta) on a boulder in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Gray-orange disk lichen (Lecidea lapicida)(?) on a stone in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 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
 Texture of map lichen Rhizocarpon petraeum on a granite stone in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Circular patterns of map lichen Rhizocarpon petraeum on a granite stone in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Peppered rock tripe lichen (Umbilicaria deusta) on a stone in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 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
 Map lichen Rhizocarpon petraeum on the surface of a rock in Zakhodskoe, 50 miles north from Saint Petersburg. Russia, July 10, 2016
 Pore surface of red-belted bracket mushroom (Fomitopsis pinicola) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Reindeer lichen (Cladonia) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Buellia(?) lichen on a boulder in a forest in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Trumpet like lichen Cladonia in moss in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Sieve lichen (Cladonia multiformis) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Species of reindeer lichen (Cladonia) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Reindeer lichen Cladonia rangiferina in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Thorn lichen Cladonia uncialis in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Some fruticose lichen on a fallen twig in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Thorn lichen Cladonia uncialis in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Trumpet like Cladonia lichen on the ground in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Reindeer lichen Cladonia rangiferina(?) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Black and grey map lichen Rhizocarpon petraeum on the surface of a rock in Zakhodskoe, 50 miles north from Saint Petersburg. Russia, July 10, 2016
 Pore surface of a brown polypore mushroom Phellinus chrysoloma(?) on a fallen spruce(?) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Texture of thorn lichen Cladonia uncialis in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Iceland moss lichen (Cetraria islandica) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Close up of thorn lichen Cladonia uncialis in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Trumpet like lichen Cladonia among pine needles in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Trumpet like lichen Cladonia in a pine forest in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Close up of reindeer lichen Cladonia rangiferina in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Iceland moss lichen (Cetraria islandica) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Species of reindeer lichen (Cladonia) in moss in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Trumpet like Cladonia lichen in a dry pine forest in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Hooded tube lichen (Hypogymnia physodes) on pine in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Brown-beret lichen (Baeomyces rufus) with apothecia in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Oakmoss lichen Evernia prunastri on a fallen twig in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Fruticose lichen on a fallen twig on black background in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Branch tips of reindeer lichen Cladonia rangiferina in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Star-tipped reindeer lichen (Cladonia stellaris) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Close up of Iceland moss lichen (Cetraria islandica) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Sieve lichen (Cladonia multiformis) among pine needles in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Close up of Iceland moss lichen (Cetraria islandica) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Close up of star-tipped reindeer lichen (Cladonia stellaris) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Powdered sunshine lichen (Vulpicida pinastri) on a stump in shade in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Hooded tube lichen (Hypogymnia physodes) on pine bark in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Texture of star-tipped reindeer lichen (Cladonia stellaris) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Iceland moss lichen (Cetraria islandica) turning reddish-brown in a wet forest in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Brown-beret lichen (Baeomyces rufus) on exposed soil on a side of a sandy road in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Felt lichen (common freckle pelt, Peltigera aphthosa) and its black and white underside in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Collema lichen on a stone in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Grey folios lichen on a granite stone near the gulf in Sobstvennaya Dacha Park. Old Peterhof, west from Saint Petersburg, Russia, May 17, 2019
 Grey lichen on a granite stone in Paltsevo Rock Massif near Svetogorsk Highway near Vyborg. Russia, July 20, 2024
 Some grey crustose lichen on a stone in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 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
 Saxicolous lichen Lecidea lapicida(?) on a stone in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Map lichen Rhizocarpon petraeum on a roadside stone in a forest in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Salted shield lichen (crottle, Parmelia saxatilis) on a stone in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Long rope-like rhizines of dog lichen (Peltigera membranacea) on a mossy stone in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Fan clubmoss and reindeer lichen in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 21, 2013
 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
 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
 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
 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
 Firedot lichen Caloplaca on granite stone in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Elongated structures of Cladonia fimbriata lichen in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 21, 2013
 Leather lichen Dermatocarpon luridum (brownish foliose) on black granular lichen Pyrenopsis in seepage area on horizontal granite surface in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Interwoven mats of Reindeer lichen (Cladonia portentosa) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 21, 2013
 Star-tipped reindeer lichen (Cladonia stellaris) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 21, 2013
 Large granite stone covered by cracked lichen Acarospora novomexicana (yellow) and firedot lichen Fulgogasparrea appressa (Caloplaca appressa)(?) (red) on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Yellowish dust-like lichen on vertical granite surface in Monrepos Park in Vyborg. Russia, May 24, 2019
 Dry leather lichen (Dermatocarpon) on a horizontal granite surface in shade in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Slender rosette lichen (Physcia subtilis) on a granite surface in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Mats of star-tipped reindeer lichen (Cladonia stellaris) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 21, 2013
 Map lichen Rhizocarpon petraeum on a granite boulder in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 22, 2021
 Flakes of leather lichen (Dermatocarpon) on a horizontal granite surface in shade in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Large apothecia of peppered rock-shield lichen (Xanthoparmelia conspersa) on surface of a granite tomb in Odd Fellow Cemetery. Anderson, Texas, December 31, 2018
 Dry flakes of leather lichen (Dermatocarpon) on a horizontal granite surface in shade in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Some web-like fungus on rotting wood in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Masses of flakes of leather lichen (Dermatocarpon) on a horizontal granite surface in a shade of big rocks in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Downy land coral lichen (Stereocaulon tomentosum) in dunes near the lake south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 Reindeer lichens (Cladonia) in a pine forest in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Red-belted bracket mushrooms (Fomitopsis pinicola) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Cetraria and Cladonia lichens in a pine forest in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Firedot lichen Fulgogasparrea brouardii (Caloplaca brouardii)(?) on granite stone in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Isidious lichen Fulgogasparrea brouardii (Caloplaca brouardii)(?) on a granite stone in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Downy land coral lichen (Stereocaulon tomentosum) among moss in dunes near the lake south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 Reindeer lichen (Cladonia portentosa) and Cladonia cervicornis ssp. verticillata in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 21, 2013
 Underside of a brown polypore mushroom Phellinus chrysoloma(?) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 False morel mushroom (Gyromitra esculenta) on a bonfire site in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Reindeer lichen (Cladonia portentosa) and trumpet-shaped Cladonia cervicornis ssp. verticillata in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 21, 2013
 Brown polypore mushroom Phellinus chrysoloma(?) on rotting wood of spruce(?) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Close-up of Cladonia lichen on upper surface of an old conifer stump in Zakhodskoe, 50 miles north from Saint Petersburg. Russia, July 22, 2024
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tombstone in City Cemetery. Bryan, Texas, March 3, 2019
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