 Some young leaves in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
 Birch leaves covering a road in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Young purple toothed polypore mushrooms (Trichaptum biforme) on a birch log in Sosnovka Park. Saint Petersburg, Russia, August 14, 2017
 Coral slime mold Ceratiomyxa fruticulosa var. porioides among dry birch leaves in Sosnovka Park. Saint Petersburg, Russia, June 30, 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
 Young leaves and a flower bud of cloudberry (Rubus chamaemorus, Moroshka in Russian) in Sosnovka Park. Saint Petersburg, Russia, May 28, 2009
 Young leaves of swamp blueberry (Vaccinium uliginosum, Russian name Golubika or Gonobobel) in Sosnovka Park in Saint Petersburg. Russia, May 31, 2011
 Birch alley with maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 20, 2016
 Young leaves with hovering mosquito and a flower of cloudberry (Rubus chamaemorus, Moroshka in Russian) in Sosnovka Park in Saint Petersburg. Russia, May 31, 2011
 Young Parasola auricoma mushrooms in Sosnovka Park. Saint Petersburg, Russia, June 7, 2017
 Young inkcap mushrooms Coprinopsis strossmayeri in Sosnovka Park. Saint Petersburg, Russia, June 18, 2017
 Young Parasola auricoma mushrooms (Coprinus auricomus) in Sosnovka Park. Saint Petersburg, Russia, May 31, 2017
 Young northern honey mushrooms (Armillaria borealis) in Sosnovka Park. Saint Petersburg, Russia, September 12, 2017
 Masses of young pinewood gingertail (Xeromphalina campanella) in Sosnovka Park. Saint Petersburg, Russia, July 16, 2017
 Young pinewood gingertail mushrooms (Xeromphalina campanella) in Sosnovka Park. Saint Petersburg, Russia, July 16, 2017
 Young leaf of mountain ash (Sorbus aucuparia, Russian name Ryabina) in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
 Young fairy inkcap mushrooms (Coprinellus disseminatus) in Sosnovka Park. Saint Petersburg, Russia, July 19, 2017
 Young northern honey mushrooms (Armillaria borealis) in Sosnovka Park. Saint Petersburg, Russia, September 13, 2017
 Young stage of slime mold Stemonitis fusca in Sosnovka Park. Saint Petersburg, Russia, July 19, 2017
 Young stage of slime mold Stemonitis fusca in Sosnovka Park. Saint Petersburg, Russia, August 4, 2017
 Young sheathed woodtuft mushrooms (Kuehneromyces mutabilis) in Sosnovka Park. Saint Petersburg, Russia, June 25, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, April 16, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch forest in Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Dissected young warty cavalier mushrooms (Melanoleuca verrucipes) in Sosnovka Park. Saint Petersburg, Russia, June 22, 2017
 Young northern honey mushrooms (Armillaria borealis) on a stump in Sosnovka Park. Saint Petersburg, Russia, September 13, 2017
 Young Parasola auricoma mushrooms on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 22, 2017
 Close up of a young leaf of mountain ash (Sorbus aucuparia, Russian name Ryabina) in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
 Young northern honey mushrooms (Armillaria borealis) on a stump in Sosnovka Park. Saint Petersburg, Russia, September 12, 2017
 Young purple edge bonnet mushrooms (Mycena purpureofusca) in Sosnovka Park. Saint Petersburg, Russia, July 19, 2017
 Young stage of slime mold Stemonitis fusca on a stump in Sosnovka Park. Saint Petersburg, Russia, July 20, 2017
 Close up of young warty cavalier mushrooms (Melanoleuca verrucipes) in Sosnovka Park. Saint Petersburg, Russia, June 22, 2017
 Young hare s foot inkcap mushrooms (Coprinopsis lagopus) in Sosnovka Park. Saint Petersburg, Russia, June 8, 2017
 Alley with yellow leaves in Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Toothed cup fungus (Tarzetta cupularis) on rich soil under young pines in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
 Young fluted bird s nest mushrooms (Cyathus striatus) on a twig in Sosnovka Park. Saint Petersburg, Russia, July 24, 2017
 Birch trees at snowfall in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch alley with snow in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch trees with snow in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch and maple trees in Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Birch forest with snow in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Young leaves of birch near Kavgolovskoe Lake in Toksovo, a suburb of Saint Petersburg, Russia, May 19, 2015
 Young collared parachute mushrooms (Marasmius rotula) on a rotten tree branch in Sosnovka Park. Saint Petersburg, Russia, July 22, 2017
 Young warty cavalier mushrooms (Melanoleuca verrucipes) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 22, 2017
 Young sulphur tuft (Hypholoma fasciculare)(?) mushrooms on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 7, 2017
 Young conical brittlestem mushrooms (Parasola conopilus) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, September 23, 2017
 Young fairy inkcap mushrooms (Coprinellus disseminatus) behind a memorial to military pilots in Sosnovka Park. Saint Petersburg, Russia, July 30, 2017
 Birch trees in northern part of Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Birch alley in north area in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Fall colors of birch alley in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Mushrooms Panellus ringens on a birch in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch trees in northern part of Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Corticioid fungus on birch tree in Sosnovka Park. Saint Petersburg, Russia, March 23, 2017
 Fungus Hypomyces armeniacus on rotting leaves in Sosnovka Park. Saint Petersburg, Russia, August 14, 2017
 Group of young conical brittlestem mushrooms (Parasola conopilus) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, September 23, 2017
 Young hare s foot inkcap mushrooms (Coprinopsis lagopus) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 25, 2017
 Young Hare s foot inkcap mushrooms (Coprinopsis lagopus) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 22, 2017
 Timber mushrooms Pycnoporellus fulgens on a birch log in Sosnovka Park. Saint Petersburg, Russia, July 19, 2017
 Antrodiella or may be Trametes mushrooms on a fallen birch in Sosnovka Park. Saint Petersburg, Russia, June 25, 2017
 Birch milkcap mushrooms (Lactarius tabidus) in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
 Birch milkcap mushrooms (Lactarius tabidus) in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
 Some crustous fibrillous fungus on a birch tree in Sosnovka Park. Saint Petersburg, Russia, September 13, 2017
 Birch milkcap mushrooms (Lactarius tabidus) in Sosnovka Park. Saint Petersburg, Russia, June 22, 2017
 Some crustous fungus at the base of a birch tree in Sosnovka Park. Saint Petersburg, Russia, September 13, 2017
 Slime mold Fuligo leviderma on a birch in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017
 Chaga (Inonotus obliquus) on a birch behind a shooting range in Sosnovka Park. Saint Petersburg, Russia, May 11, 2017
 Timber mushrooms Lentinellus castoreus on a birch log in Sosnovka Park. Saint Petersburg, Russia, September 2, 2017
 Young leaves of a birch(?) in Lammin-Suo swamp reserve, 25 miles north-west from Saint Petersburg. Russia, May 9, 2016
 Fungus Hypomyces armeniacus on rotting leaves on the ground in Sosnovka Park. Saint Petersburg, Russia, August 14, 2017
 Fresh leaves of mountain ash (Sorbus aucuparia, Russian name Ryabina) in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
 Tar rot fungus (Rhytisma acerinum) on last year maple leaves in Sosnovka Park. Saint Petersburg, Russia, March 23, 2017
 Tar rot fungus (Rhytisma acerinum) on fallen maple leaves in Sosnovka Park. Saint Petersburg, Russia, March 23, 2017
 Young mossy maple polypore mushrooms (Oxyporus populinus)(?) in a hollow of small willow stump in Sosnovka Park. Saint Petersburg, Russia, April 4, 2017
 Young northern honey mushrooms (Armillaria borealis) with slime mold Trichia decipiens on a stump in Sosnovka Park. Saint Petersburg, Russia, September 13, 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
 Dog vomit slime mold (Fuligo septica) on a birch log in Sosnovka Park. Saint Petersburg, Russia, July 19, 2017
 Fall colors of birch alley in north area in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Texture of chaga (Inonotus obliquus) on a birch behind a shooting range in Sosnovka Park. Saint Petersburg, Russia, May 11, 2017
 Brown birch bolete mushroom (Leccinum scabrum) in Sosnovka Park. Saint Petersburg, Russia, July 30, 2017
 Some small white shield like mushrooms on rotten birch in Sosnovka Park. Saint Petersburg, Russia, April 4, 2017
 Yellow leaves on demolished garages in area of former prisoner of war camps in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Rust fungus Puccinia urticata on leaves of common (stinging) nettle in Sosnovka Park. Saint Petersburg, Russia, May 27, 2017
 Orange leaves on demolished garages in area of former prisoner of war camps in Sosnovka Park. Saint Petersburg, Russia, October 8, 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
 Red velvety patches on a birch leaf caused by the eriophyid mite in Sosnovka Park. Saint Petersburg, Russia, June 29, 2017
 Caps of artist s bracket mushrooms (Ganoderma applanatum) on a birch in Sosnovka Park. Saint Petersburg, Russia, August 4, 2017
 Red-Belt Conk (polypore mushroom Fomitopsis pinicola) on 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
 Club foot mushrooms (Ampulloclitocybe clavipes) in a birch forest in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
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