 Close-up of birch blackhead (Diatrypella favacea) on a dry hazelnut on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Birch blackhead (Diatrypella favacea) growing through bark on a dry hazelnut on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Spring hazelcup fungus (Encoelia furfuracea) together with birch blackhead (Diatrypella favacea) on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Fungus Biscogniauxia repanda on a dry stem of hazelnut(?) in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Close-up of fungus Biscogniauxia repanda on a dry stem of hazelnut(?) in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Top view of fungus Biscogniauxia repanda on a dry stem of hazelnut(?) in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Side view of fungus Biscogniauxia repanda on a dry stem of hazelnut(?) in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Black formations of fungus Biscogniauxia repanda on a dry stem of hazelnut(?) in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Fungus Biscogniauxia repanda on a dry stem of hazelnut(?) on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Fungus Biscogniauxia repanda on wood of hazelnut(?) on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Ascomycete fungus Encoelia furfuracea on a dry broken hazelnut on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Corticioid fungus Peniophora incarnata on a hazelnut stem of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Details of fungus Biscogniauxia repanda on a dry stem of hazelnut(?) on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Upper surface of fungus Biscogniauxia repanda on a dry stem of hazelnut(?) on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Corticioid fungus Hypoxylon vogesiacum on dry wood in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Lungwort (Pulmonaria obscura, Russian name Medunitsa) in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Jelly fungus Exidia nigricans on wood in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Some bracket polypore mushroom on rotting wood in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Bracket polypore mushroom on a fallen tree in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Hazel woodwart fungus (Hypoxylon fuscum) on a hazelnut stem on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Pore surface of a bracket polypore mushroom in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Blue flower of Hepatica (Pechonochnitsa in Russian) in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Close-up of spring hazelcup fungus (Encoelia furfuracea) in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Spring hazelcup fungus (Encoelia furfuracea) on a broken hazelnut bush on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Spring hazelcup fungus (Encoelia furfuracea) on a dry broken hazelnut bush on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Texture of hazel woodwart fungus (Hypoxylon fuscum) on a hazelnut stem on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Young hazel woodwart fungus (Hypoxylon fuscum) on a hazelnut stem on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Close-up of hazel woodwart fungus (Hypoxylon fuscum) on a hazelnut stem on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Dried cups of spring hazelcup fungus (Encoelia furfuracea) in a hazelnut forest on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Cluster of spring hazelcup fungus (Encoelia furfuracea) on a dry broken hazelnut bush on a slope of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Blue flowers of Hepatica (Pechonochnitsa in Russian) on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Close-up of a blue flower of Hepatica (Pechonochnitsa in Russian) on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Scarlet elfcup mushrooms (Sarcoscypha austriaca) at the foot of Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Yellow brain fungus (Tremella mesenterica) on a dry tree on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Small troop mushrooms Xeromphalina kauffmanii on an old mossy stump of a large tree on a slope without forest on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Cross-veined troop mushrooms Xeromphalina kauffmanii on an old mossy stump of a large tree on a slope without forest on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Cross-veined troop mushrooms Xeromphalina kauffmanii in moss on an old rotted stump of a large tree on a slope without forest on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
 Duderhof Train Station, south from Saint Petersburg. Russia, May 9, 2021
 Hazelnut forest on a slope of a hill in Orekhovo, 40 miles north from Saint Petersburg. Russia, March 18, 2017
 Growth pattern of resupinate polypore mushroom Fomitiporia punctata(?) on a fallen birch near Dibuny, north-west from Saint Petersburg, Russia, May 5, 2021
 Back lit leaves of hazelnut in Sablino, south from Saint Petersburg. Russia, May 21, 2011
 Pattern of witches butter mushroom (jelly fungus, Exidia nigricans) on a fallen birch near Lisiy Nos, west from Saint Petersburg. Russia, May 6, 2019
 Pattern of saxicolous crustose lichens 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
 Catkins of hazelnut taken from Sosnovka Park. Saint Petersburg, Russia, March 22, 2017
 Blooming hazelnut from Sosnovka Park. Saint Petersburg, Russia, March 22, 2017
 Bernal Heights summit from Billy Goat Hill in San Francisco. California, March 14, 2024
 Growth pattern of corticioid (crust) fungus Cylindrobasidium evolvens on a fallen tree in a spruce forest near Dibuny, north-west from Saint Petersburg, Russia, May 5, 2021
 Potrero Hill from a back porch at Diamond Heights Boulevard. San Francisco, California, March 13, 2024
 Bernal Heights summit after sunset from Billy Goat Hill in San Francisco. California, March 14, 2024
 30th Street and Bernal Heights from Billy Goat Hill in San Francisco. California, March 14, 2024
 Bernal Heights summit in dusk from Billy Goat Hill in San Francisco. California, March 14, 2024
 Leaves of hazelnut(?) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 28, 2011
 Pattern of leaves of plantain lily (hosta) in Peter the Great Botanical Garden of Komarov Botanical Institute. Saint Petersburg, Russia, May 26, 2021
 Blooming hazelnut in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, April 21, 2017
 Mission District and Potrero Hill from a back porch at Diamond Heights Boulevard. San Francisco, California, March 13, 2024
 Zolotaya Gora (Golden Mount) Cascade of fountains in Peterhof, a former Tsar residence, now a suburb of Saint Petersburg. Russia, September 20, 2002
 Zolotaya Gora (Golden Mount) Cascade of fountains in Peterhof, a former Tsar residence, now a suburb of Saint Petersburg. Russia, September 20, 2002
 Bernal Heights from a back porch at Diamond Heights Boulevard. San Francisco, California, March 13, 2024
 Bernal Heights and Bay from a back porch at Diamond Heights Boulevard. San Francisco, California, March 13, 2024
 Corticioid fungus Hyphoderma setigerum on hazelnut in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, March 17, 2017
 Flowers of beaked hazelnut (Corylus cornuta) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, April 21, 2017
 A tomb near a quarry between Malinovaya Hill and Artillery storage west from Toksovo, near Saint Petersburg. Russia, May 2, 2021
 Bernal Heights at dusk from a back porch at Diamond Heights Boulevard. San Francisco, California, March 13, 2024
 Dolores Heights and Mission from a back porch at Diamond Heights Boulevard. San Francisco, California, March 13, 2024
 Bernal Heights after sunset from a back porch at Diamond Heights Boulevard. San Francisco, California, March 13, 2024
 Bernal Heights at evening from a back porch at Diamond Heights Boulevard. San Francisco, California, March 13, 2024
 Area of Dolores Heights from a back porch at Diamond Heights Boulevard. San Francisco, California, March 13, 2024
 Area of Dolores Heights and Mission from a back porch at Diamond Heights Boulevard. San Francisco, California, March 13, 2024
 Corticioid fungus Hyphoderma setigerum on a dry branch of hazelnut in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, March 17, 2017
 Birch alley in far end of Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010
 Thin-walled maze polypore mushrooms (Daedaleopsis confragosa) on a dry branch of hazelnut in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, March 17, 2017
 Birch woodwart (Jackrogersella multiformis) near Lisiy Nos, south from Saint Petersburg. Russia, August 17, 2018
 Malformed trunk of a birch tree near Lisiy Nos, south from Saint Petersburg. Russia, February 18, 2017
 Birch foliage in south area of Sosnovka Park. Saint Petersburg, Russia, September 23, 2013
 Prostrate mushroom Cerioporus mollis (Datronia mollis) on a dry branch of hazelnut in Orekhovo, 40 miles north from Saint Petersburg. Russia, March 18, 2017
 Corticioid mushroom Cerioporus mollis (Datronia mollis) on a dry branch of hazelnut in Orekhovo, 40 miles north from Saint Petersburg. Russia, March 18, 2017
 Dry branch of hazelnut with a prostrate mushroom Cerioporus mollis (Datronia mollis) in Orekhovo, 40 miles north from Saint Petersburg. Russia, March 18, 2017
 Poroid crust mushroom Xanthoporia radiata (Mensularia radiata) on a dry branch of hazelnut in Orekhovo, 40 miles north from Saint Petersburg. Russia, March 18, 2017
 Poroid crust fungus Xanthoporia radiata (Mensularia radiata) taken from a hazelnut branch in Orekhovo, 40 miles north from Saint Petersburg. Russia, March 18, 2017
 Pores of prostrate mushroom Cerioporus mollis (Datronia mollis) on a dry branch of hazelnut in Orekhovo, 40 miles north from Saint Petersburg. Russia, March 18, 2017
 Texture of prostrate mushroom Cerioporus mollis (Datronia mollis) on a dry branch of hazelnut in Orekhovo, 40 miles north from Saint Petersburg. Russia, March 18, 2017
 Poroid crust fungus Xanthoporia radiata (Mensularia radiata) on a dry branch of hazelnut in Orekhovo, 40 miles north from Saint Petersburg. Russia, March 18, 2017
 Thin-walled maze polypore mushroom (Blushing Bracket, Daedaleopsis confragosa) on a dry branch of hazelnut in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, March 17, 2017
 Pergola on a hill in Peter the Great Botanical Garden of Komarov Botanical Institute. Saint Petersburg, Russia, May 26, 2021
 Close up of poroid crust fungus Xanthoporia radiata (Mensularia radiata) on a dry branch of hazelnut in Orekhovo, 40 miles north from Saint Petersburg. Russia, March 18, 2017
 Birch woodwart (Jackrogersella multiformis) on a fallen tree near Lisiy Nos, south from Saint Petersburg. Russia, August 17, 2018
 Reishi mushroom (Ganoderma lucidum) on a fallen birch near Lisiy Nos, south from Saint Petersburg. Russia, August 17, 2018
 Birch circle (Krug Belyh Berioz) in far end of Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010
 Fungus (mushrooms) Phellinus laevigatus on a birch tree near Lisiy Nos, south from Saint Petersburg. Russia, February 18, 2017
 Saxifrage(?) on alpine hill in Peter the Great Botanical Garden of Komarov Botanical Institute. Saint Petersburg, Russia, May 26, 2021
 A house at Cayuga Heights(?) Road in Cayuga Heights neighborhood. Ithaca, New York, October 24, 2005
 A house at Cayuga Heights Road in Cayuga Heights neighborhood. Ithaca, New York, October 24, 2005
 Gills of thin-walled maze polypore mushroom (Blushing Bracket, Daedaleopsis confragosa) on a dry branch of hazelnut in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, March 17, 2017
 Red-Belt Conk (polypore mushrooms Fomitopsis pinicola) on a birch near Lisiy Nos, south from Saint Petersburg. Russia, February 18, 2017
 Crust of fungus (mushrooms) Phellinus laevigatus on a birch tree near Lisiy Nos, south from Saint Petersburg. Russia, February 18, 2017
 Stand of pure birch forest in a swamp south-west from Dibuny - Pesochnyi, near Saint Petersburg. Russia, September 14, 2016
 Willow bracket fungus (Phellinus igniarius mushrooms) on a birch near Lisiy Nos, south from Saint Petersburg. Russia, February 18, 2017
 Purple toothed polypore mushrooms (Trichaptum biforme) on a birch log near Lisiy Nos, south from Saint Petersburg. Russia, February 18, 2017
 Spreading fungus (mushrooms) Phellinus laevigatus on a birch tree near Lisiy Nos, south from Saint Petersburg. Russia, February 18, 2017
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