 Texture of chaga (Inonotus obliquus) on a birch behind a shooting range in Sosnovka Park. Saint Petersburg, Russia, May 11, 2017
 Cinnamon texture of Chaga mushroom (Inonotus obliquus) taken from a birch tree in Yuntolovsky Park. Saint Petersburg, Russia, February 23, 2017
 Texture of Chaga fungus (Inonotus obliquus) on a birch in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 28, 2017
 Chaga mushroom (Inonotus obliquus) on a birch tree in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, March 2, 2017
 Black tissue of Chaga mushroom (Inonotus obliquus) on a birch tree in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, March 2, 2017
 A road near a shooting range in Sosnovka Park. Saint Petersburg, Russia, May 11, 2017
 Alley behind a shooting range in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Spent lead pellets (small balls, shots) fallen on the ground behind a shooting range in Sosnovka Park. Saint Petersburg, Russia, May 11, 2017
 Fence of a shooting range in Sosnovka Park. Saint Petersburg, Russia, February 6, 2018
 Fence of shooting range in Sosnovka Park. Saint Petersburg, Russia, February 7, 2013
 Birches near shooting range in Sosnovka Park. Saint Petersburg, Russia, September 23, 2013
 Near shooting range in Sosnovka Park in northern Saint Petersburg. Russia, September 29, 2002
 Fall colors near shooting range in Sosnovka Park. Saint Petersburg, Russia, September 23, 2013
 Spent lead pellets (small balls, shots) fallen on the ground behind a shooting range in Sosnovka Park. Saint Petersburg, Russia, December 31, 2016
 Chanterelle mushrooms (Cantharellus cibarius, Russian name Lisichki) found under leaves behind a shooting range in Sosnovka Park. Saint Petersburg, Russia, November 21, 2016
 Birch forest in Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, April 16, 2017
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Young leaves on a birch in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch and maple trees in Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Birch trees with snow in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch alley with snow in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch forest with snow in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch trees at snowfall in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch trees in northern part of Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Mushrooms Panellus ringens on a birch in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch alley in north area in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Birch leaves covering a road in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Corticioid fungus on birch tree in Sosnovka Park. Saint Petersburg, Russia, March 23, 2017
 Fall colors of birch alley in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Birch trees in northern part of Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Some crustous fungus at the base of a birch tree in Sosnovka Park. Saint Petersburg, Russia, September 13, 2017
 Birch milkcap mushrooms (Lactarius tabidus) in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
 Birch milkcap mushrooms (Lactarius tabidus) in Sosnovka Park. Saint Petersburg, Russia, June 22, 2017
 Some crustous fibrillous fungus on a birch tree in Sosnovka Park. Saint Petersburg, Russia, September 13, 2017
 Timber mushrooms Pycnoporellus fulgens on a birch log in Sosnovka Park. Saint Petersburg, Russia, July 19, 2017
 Birch milkcap mushrooms (Lactarius tabidus) in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
 Slime mold Fuligo leviderma on a birch in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017
 Antrodiella or may be Trametes mushrooms on a fallen birch in Sosnovka Park. Saint Petersburg, Russia, June 25, 2017
 Timber mushrooms Lentinellus castoreus on a birch log in Sosnovka Park. Saint Petersburg, Russia, September 2, 2017
 Phloeomana hiemalis (Mycena hiemalis) mushrooms on a rotten chaga in area of Dibuny - Pesochny near Saint Petersburg. Russia, March 4, 2017
 Brown birch bolete mushroom (Leccinum scabrum) in Sosnovka Park. Saint Petersburg, Russia, July 30, 2017
 Fall colors of birch alley in north area in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Caps of timber mushrooms Lentinellus castoreus on a birch log in Sosnovka Park. Saint Petersburg, Russia, September 2, 2017
 Group of birch milkcap mushrooms (Lactarius tabidus) in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
 Some small white shield like mushrooms on rotten birch in Sosnovka Park. Saint Petersburg, Russia, April 4, 2017
 Dog vomit slime mold (Fuligo septica) on a birch log in Sosnovka Park. Saint Petersburg, Russia, July 19, 2017
 Soft porous fungus covering rotten birch bark in Sosnovka Park. Saint Petersburg, Russia, September 2, 2017
 Caps of artist s bracket mushrooms (Ganoderma applanatum) on a birch in Sosnovka Park. Saint Petersburg, Russia, August 4, 2017
 Birch milkcap mushroom (Lactarius tabidus) in swampy part in Sosnovka Park. Saint Petersburg, Russia, June 29, 2017
 Birch milkcap mushrooms (Lactarius tabidus) on peat soil in Sosnovka Park. Saint Petersburg, Russia, June 22, 2017
 Red velvety patches on a birch leaf (velvet erineum galls) in Sosnovka Park. Saint Petersburg, Russia, June 29, 2017
 Pores of Red-Belt Conk mushroom ( Fomitopsis pinicola) from a birch in Sosnovka Park. Saint Petersburg, Russia, March 20, 2017
 Birch milkcap mushrooms (Lactarius tabidus) in swampy area in Sosnovka Park. Saint Petersburg, Russia, July 6, 2017
 Hydnoid fungus Mycoacia aurea(?) on the underside of a rotten birch log in Sosnovka Park. Saint Petersburg, Russia, September 2, 2017
 Tinder bracket mushrooms Pycnoporellus fulgens on birch logs in Sosnovka Park. Saint Petersburg, Russia, July 6, 2017
 Purple toothed polypore mushrooms (Trichaptum biforme) on a birch log in Sosnovka Park. Saint Petersburg, Russia, March 20, 2017
 Red velvety patches on a birch leaf caused by the eriophyid mite in Sosnovka Park. Saint Petersburg, Russia, June 29, 2017
 Club foot mushrooms (Ampulloclitocybe clavipes) in a birch forest in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
 Birch polypore mushroom Fomitopsis betulina (Piptoporus betulinus) in Sosnovka Park. Saint Petersburg, Russia, March 20, 2017
 Red-Belt Conk (polypore mushroom Fomitopsis pinicola) on a birch in Sosnovka Park. Saint Petersburg, Russia, March 20, 2017
 Group of birch milkcap mushrooms (Lactarius tabidus) in swampy area in Sosnovka Park. Saint Petersburg, Russia, July 6, 2017
 Young purple toothed polypore mushrooms (Trichaptum biforme) on a birch log in Sosnovka Park. Saint Petersburg, Russia, August 14, 2017
 Purple edge bonnet mushrooms (Mycena purpureofusca) on a rotten birch log in Sosnovka Park. Saint Petersburg, Russia, July 19, 2017
 Big jelly rot fungus (Phlebia tremellosa, Merulius tremellosus) on a birch tree in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017
 Coral slime mold Ceratiomyxa fruticulosa var. porioides among dry birch leaves in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
 Orange plasmodium of many-headed slime mold Physarum polycephalum on a birch log in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
 Brown birch bolete mushroom (Leccinum scabrum) in swampy area in Sosnovka Park. Saint Petersburg, Russia, July 16, 2017
 Birch woodwart fungus (Jackrogersella multiformis, Annulohypoxylon multiforme) on a stump in Sosnovka Park. Saint Petersburg, Russia, September 23, 2017
 Ochre cushion fungus (Trichoderma pulvinatum) on a birch polypore mushroom in Sosnovka Park. Saint Petersburg, Russia, March 27, 2017
 Jelly rot fungus (Phlebia tremellosa, Merulius tremellosus) on a birch tree in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017
 Old jelly rot fungus (Phlebia tremellosa, Merulius tremellosus) on a birch tree in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017
 Tinder conk mushroom (polypore fungus Fomes fomentarius) on a birch in Sosnovka Park. Saint Petersburg, Russia, March 20, 2017
 Prostrate form of purple toothed polypore mushrooms (Trichaptum biforme) on a birch log in Sosnovka Park. Saint Petersburg, Russia, March 20, 2017
 Ghost shield mushrooms (Pluteus pellitus) on a rotten birch log in swampy area in Sosnovka Park. Saint Petersburg, Russia, July 16, 2017
 Caps of jelly rot fungus (Phlebia tremellosa, Merulius tremellosus) on a birch tree in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017
 Jelly rot fungus (Phlebia tremellosa, Merulius tremellosus) with snow on a birch tree in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017
 Upper view of purple toothed polypore mushrooms (Trichaptum biforme) on a birch log in Sosnovka Park. Saint Petersburg, Russia, March 20, 2017
 Birch polypore mushroom with a mold like ochre cushion fungus (Trichoderma pulvinatum) in Sosnovka Park. Saint Petersburg, Russia, March 27, 2017
 Red velvety patches on a birch leaf caused by the velvet erineum gall eriophyid mite in Sosnovka Park. Saint Petersburg, Russia, June 29, 2017
 Pair of ghost shield mushrooms (Pluteus pellitus) on a rotten birch log in swampy area in Sosnovka Park. Saint Petersburg, Russia, July 16, 2017
 Ochre Bracket mushrooms (Trametes ochracea) on a stump of small birch in swampy area of Sosnovka Park. Saint Petersburg, Russia, April 8, 2017
 Velvety patches on a birch leaf caused by the velvet erineum gall eriophyid mite in Sosnovka Park. Saint Petersburg, Russia, August 21, 2017
 Prostrate form of purple toothed polypore fungus (Trichaptum biforme) covering a birch log in Sosnovka Park. Saint Petersburg, Russia, March 20, 2017
 Prostrate form of purple toothed polypore fungus (Trichaptum biforme) on a fallen birch in Sosnovka Park. Saint Petersburg, Russia, March 20, 2017
 Fungus (mushroom) Cylindrobasidium evolvens growing on fallen birch leaves taken from peat area in Sosnovka Park. Saint Petersburg, Russia, March 23, 2017
 Fungus (mushroom) Cylindrobasidium evolvens growing on fallen birch leaves on peat in swampy area of Sosnovka Park. Saint Petersburg, Russia, March 23, 2017
 Cross section of ghost shield mushrooms (Pluteus pellitus) taken from a rotten birch log in swampy area in Sosnovka Park. Saint Petersburg, Russia, July 16, 2017
 Ochre Bracket mushrooms (Trametes ochracea) collected from a stump of small birch in swampy area of Sosnovka Park. Saint Petersburg, Russia, April 8, 2017
 Cinnamon bracket mushroom (Hapalopilus rutilans, Hapalopilus nidulans) on a birch log in Sosnovka Park. Saint Petersburg, Russia, August 14, 2017
 Polypore mushrooms Hapalopilus rutilans (Hapalopilus nidulans) taken from a dry birch in northern part of Sosnovka Park. Saint Petersburg, Russia, April 26, 2017
 Polypore mushroom Hapalopilus rutilans (Hapalopilus nidulans) on a dry birch in northern part of Sosnovka Park. Saint Petersburg, Russia, April 26, 2017
 Decaying basidiome of jelly rot (Phlebia tremellosa, Merulius tremellosus) with a saprobic fungus Botryobasidium subcoronatum on a birch tree in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017
 Birch forest in Sosnovka Park. Saint Petersburg, Russia, May 17, 2011
 Birch forest in Sosnovka Park. Saint Petersburg, Russia, May 30, 2009
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