 Young powdered sunshine lichen (Vulpicida pinastri) on a conifer log in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Powdered sunshine lichen (Vulpicida pinastri) on a log in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Powdered sunshine lichen (Vulpicida pinastri) and tree fringewort (Ptilidium pulcherrimum) on a log in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Powdered sunshine lichen (Vulpicida pinastri) in Petiayarvi, north from Saint Petersburg. Russia, May 26, 2019
 Close up of powdered sunshine lichen (Vulpicida pinastri) on a log in Petiayarvi, north from Saint Petersburg. Russia, May 26, 2019
 Powdered sunshine lichen (Vulpicida pinastri) on a log in a forest in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 22, 2021
 Powdered sunshine lichen (Vulpicida pinastri) on a stump in shade in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
 Powdered sunshine lichen (Vulpicida pinastri) on rotten wood in a forest in Posiolok, near Vyritsa, 50 miles south from Saint Petersburg. Russia, July 9, 2016
 Dog lichen (Peltigera membranacea(?)) in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Cladonia lichen under pines in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Close-up of Cladonia lichen under pines in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Green Cladonia lichen on rotting wood in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Reindeer lichen (Cladonia rangiferina) a pine forest in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Trumpet-shaped lichen Cladonia cervicornis ssp. verticillata(?) in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Green moss on a conifer log in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Close-up of star-tipped reindeer lichen (Cladonia stellaris) in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Close-up of trumpet-shaped lichen Cladonia cervicornis ssp. verticillata(?) in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Star-tipped reindeer lichen (Cladonia stellaris) in a pine forest in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Close-up of tree fringewort (Ptilidium pulcherrimum) on a conifer log in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Golden lichen Xanthoria parietina with another grey crustose lichen on a stone in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, July 31, 2024
 Round patch of tree fringewort (Ptilidium pulcherrimum) on a conifer log in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 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
 Powdered ruffle lichen (Parmotrema hypotropum) and cartilage lichen (Ramalina celastri) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Washington-on-the-Brazos State Historic Site. Washington, Texas, August 29, 2024
 Upper view of Cladonia lichen and tree fringewort (Ptilidium pulcherrimum) on a conifer stump in Zakhodskoe, 50 miles north from Saint Petersburg. Russia, July 22, 2024
 Pine bolete mushroom (Boletus pinophilus) with lichen in Petiayarvi, 50 miles north from Saint Petersburg. Russia, August 30, 2017
 Yellow map lichen (Rhizocarpon geographicum) and another crustose yellow lichen on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Dog lichen (Peltigera membranacea) in Petiayarvi, north from Saint Petersburg. Russia, May 26, 2019
 Some grey crustose lichen on a stone in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
 Dark brown crustose lichen Caloplaca growing on a yellow dispersed lichen Acarospora (cobblestone, or cracked lichen) in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Sieve lichen (Cladonia multiformis) in Petiayarvi, north from Saint Petersburg. Russia, May 26, 2019
 Dog lichen Peltigera didactyla on old bonfire site in Petiayarvi, north from Saint Petersburg. Russia, May 26, 2019
 Various crustose lichen on a trunk of oak tree in ultraviolet light in Bee Creek Park. College Station, Texas, August 19, 2024
 Felt lichen (common freckle pelt, Peltigera aphthosa) in Petiayarvi, north from Saint Petersburg. Russia, May 26, 2019
 Felt lichen (common freckle pelt, Peltigera aphthosa) in moss in Petiayarvi, north from Saint Petersburg. Russia, May 26, 2019
 Dog lichen (Peltigera membranacea) on a tree in Kuzmolovo, north from Saint Petersburg. Russia, August 9, 2024
 Reindeer lichen Cladonia rangiferina near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Green lobes of felt lichen (common freckle pelt, Peltigera aphthosa) in Petiayarvi, north from Saint Petersburg. Russia, May 26, 2019
 Felt lichen (common freckle pelt, Peltigera aphthosa) in a pine forest in Petiayarvi, north from Saint Petersburg. Russia, May 26, 2019
 Beard lichen (Usnea) fallen from a tree near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Green moss and reindeer lichen under pines near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Reindeer lichen (Cladonia rangiferina) under pines near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Lichen Iceland moss (Cetraria islandica) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Brown crustose lichen on a granite shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Felt lichen (common freckle pelt, Peltigera aphthosa) among moss and pine needles in Petiayarvi, north from Saint Petersburg. Russia, May 26, 2019
 Fruticose lichen Evernia prunastri fallen from a tree near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Reindeer lichen Cladonia rangiferina (Yagel in Russian) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Star-tipped reindeer lichen (Cladonia stellaris) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Crustose lichen Pertusaria in ultraviolet light on a small mesquite tree on Post Oak Trail in Lick Creek Park. College Station, Texas, August 23, 2024
 Conifer woodtuft mushrooms (Kuehneromyces lignicola) in Petiayarvi, north from Saint Petersburg. Russia, July 21, 2017
 Green powdery lichen with apothecia Baeomyces rufus(?) on the ground near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Close-up of star-tipped reindeer lichen (Cladonia stellaris) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Powdered ruffle lichen (Parmotrema hypotropum) and Ramalina when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Washington-on-the-Brazos State Historic Site. Washington, Texas, August 29, 2024
 Grey crustose lichen Aspicilia on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Group of conifer woodtuft mushrooms (Kuehneromyces lignicola) in Petiayarvi, north from Saint Petersburg. Russia, July 21, 2017
 Hooded tube lichen (Hypogymnia physodes) on a fallen pine twig near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 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
 Conifer mazegill mushrooms (Gloeophyllum sepiarium) in Kuzmolovo, north from Saint Petersburg. Russia, August 9, 2024
 Spores of small white oysterling mushrooms Hohenbuehelia collected earlier 8/3/2024 in Petiayarvi, north from Saint Petersburg, Russia, August 23, 2024
 Waterfall of an old dam of Volchya River in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Section of an old dam of Volchya River in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Dam of Volchya River from a camp in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Powdered ruffle lichen (Parmotrema hypotropum) from a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 1, 2024
 Pink brittlegill (Russula) mushrooms in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Running water of an old dam of Volchya River in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Chanterelle mushrooms (Cantharellus cibarius) in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Black stones of an old dam of Volchya River in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 A trail from a hill in a pine forest in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 A trail going uphill in a pine forest in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Rushing water of an old dam of Volchya River in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Rosette of crustose lichen Lecanora muralis (Protoparmeliopsis muralis) on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Close-up of crustose lichen Lecanora muralis (Protoparmeliopsis muralis) on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Spores (in KOH) of small orange webcap mushrooms (Cortinarius)(?) (spore print rusty brown) in sphagnum collected earlier 8/3/2024 in Petiayarvi, north from Saint Petersburg, Russia, August 23, 2024
 Pinelitter gingertail mushrooms (Xeromphalina cauticinalis) in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Mealy tooth mushroom (Hydnellum ferrugineum) in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Woolly tooth mushrooms (Phellodon tomentosus) in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Bumpy rim lichen Lecanora hybocarpa(?) together with golden lichen Xanthoria parietina on a fallen aspen tree near Dibuny, north-west from Saint Petersburg, Russia, May 5, 2021
 Gold cobblestone lichen Pleopsidium flavum (Pleopsidium oxytonum)(?) mixed with a grey crustose lichen on granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Feather-like moss on sandy soil near train tracks in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Common funnel mushrooms (Clitocybe gibba, Infundibulicybe g.) in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Spores (in KOH) of saffron webcap mushrooms (Cortinarius croceus) (spore print rusty brown, turns black in KOH) in sphagnum collected earlier 8/3/2024 in Petiayarvi, north from Saint Petersburg, Russia, August 23, 2024
 Mealy tooth mushroom (Hydnellum ferrugineum) with a side view in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Close-up of feather-like moss on sandy soil near train tracks in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Small oysterling mushrooms Hohenbuehelia on a fallen rowan(?) tree in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Spores of conifer woodtuft mushrooms (Kuehneromyces lignicola) collected earlier 7/17/2024 in Sosnovka Park, Saint Petersburg, Russia, August 22, 2024
 Pale greenish crustose lichen on iron railing of a bridge in Lick Creek Park. College Station, Texas, February 27, 2024
 Details of grey saxicolous crustose lichen on a rock near the lake near old army bathhouse south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 Dark grey saxicolous crustose lichen on a rock near the lake near old army bathhouse south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 Small orange webcap mushrooms (Cortinarius)(?) in a sphagnum swamp near a lake in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Saffron webcap mushrooms (Cortinarius croceus) in a sphagnum swamp near a lake in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Smooth rupturewort (Herniaria glabra) on sandy soil near train tracks in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Texture of dark grey saxicolous crustose lichen on a rock near the lake near old army bathhouse south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 Close up of dark grey saxicolous crustose lichen on a rock near the lake near old army bathhouse south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 Details of dark grey saxicolous crustose lichen on a rock near the lake near old army bathhouse south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 Small white oysterling mushrooms Hohenbuehelia on underside of a wet fallen rowan(?) tree in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Small yellowish oysterling mushrooms Hohenbuehelia on underside of a wet fallen rowan(?) tree in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Mapledust lichen, Lecanora thysanophora (green cover) and a fungus Skeletocutis papyracea (light-brown) on lower side of a fallen conifer tree in area of Dibuny - Pesochny near Saint Petersburg. Russia, March 4, 2017
 Small slimy white oysterling mushrooms Hohenbuehelia on underside of a wet fallen rowan(?) tree in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
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