 Maple trees in Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Maple trees near a memorial in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Birch trees in northern part of Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Birch trees in northern part of Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Snowy waxcap mushrooms (Cuphophyllus virgineus) under maple trees in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
 Birch alley with maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 20, 2016
 Maple 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 trees in Sosnovka Park. Saint Petersburg, Russia, October 20, 2016
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Birch trees at snowfall in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch trees with snow in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Maple trees near a foot bridge of Vittolovsky Canal in Alexander Park. Pushkin (former Tsarskoe Selo), south from Saint Petersburg, Russia, October 6, 2017
 Birch trees in Sergievka Park. Old Peterhof, west from Saint Petersburg, Russia, October 5, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Birch forest in Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 8, 2016
 Maple leaf in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Frozen maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Yellow maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 20, 2016
 Fall colors of birch alley in Sosnovka Park. Saint Petersburg, Russia, October 8, 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
 Tar rot on maple leaves (Rhytisma acerinum) in Sosnovka Park. Saint Petersburg, Russia, October 8, 2016
 Tar rot fungus (Rhytisma acerinum) on a maple leaf taken from Sosnovka Park. Saint Petersburg, Russia, March 23, 2017
 Maple trees near Olginsky Pond. Saint Petersburg, Russia, October 25, 2016
 Maple trees near Lisiy Nos, west from Saint Petersburg. Russia, October 19, 2016
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, December 1, 2016
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, September 28, 2015
 Birch trees in Sosnovka Park in Saint Petersburg, Russia, June 22, 2010
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, September 29, 2016
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, November 23, 2016
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, September 3, 2018
 Birch trees and logs in Sosnovka Park. Saint Petersburg, Russia, May 30, 2009
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, June 11, 2009
 Birch and mountain ash trees in Sosnovka Park. Saint Petersburg, Russia, May 31, 2009
 Fall colors of birch alley in north area in Sosnovka Park. Saint Petersburg, Russia, October 8, 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
 Snowy birch trees in Sosnovka Park. Saint Petersburg, Russia, November 25, 2016
 Road with birch trees in Sosnovka Park. Saint Petersburg, Russia, September 29, 2015
 Birch trees in Sosnovka Park at morning. Saint Petersburg, Russia, November 6, 2016
 Birch trees in fresh snow in Sosnovka Park. Saint Petersburg, Russia, November 25, 2016
 Birch trees from Listvennaya Alley in Sosnovka Park. Saint Petersburg, Russia, September 29, 2015
 Birch trees in eastern part of Sosnovka Park. Saint Petersburg, Russia, September 29, 2015
 Birch trees in eastern part of Sosnovka Park. Saint Petersburg, Russia, September 29, 2015
 Birch trees from Listvennaya Alley in Sosnovka Park. Saint Petersburg, Russia, September 29, 2015
 Tar rot fungus on fallen maple leaves, Rhytisma acerinum mushroom, in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Maple trees in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 20, 2016
 Fall colors of birch trees behind the war monument in Sosnovka Park. Saint Petersburg, Russia, September 29, 2015
 Birch trees in eastern part of Sosnovka Park at morning. Saint Petersburg. Russia, September 9, 2007
 Birch trees of Karasiovoe Lake in northern area of Sosnovka Park. Saint Petersburg, Russia, September 24, 2015
 Mushrooms Thelephora anthocephala under maple trees near a memorial in Gardens of Polytechnic Institute. Saint Petersburg, Russia, August 19, 2017
 Snowy trees in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Trees at snowfall in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Snowy trees in Sosnovka Park. Saint Petersburg, Russia, April 13, 2017
 Snowy trees in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Larch trees in Sosnovka Park. Saint Petersburg, Russia, April 13, 2017
 Trees in snow in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Trees during snowfall in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Maple trees on Architecture Lane in Literatorskie Mostki section of Volkovo Cemetery. Saint Petersburg, Russia, October 17, 2016
 Pine trees in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Young mossy maple polypore mushrooms (Oxyporus populinus)(?) in a hollow of small willow stump in Sosnovka Park. Saint Petersburg, Russia, April 4, 2017
 Larch trees at snowfall in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Fresh snow on trees in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Larch trees with snow in Sosnovka Park. Saint Petersburg, Russia, April 13, 2017
 Leaf parachute mushrooms (Marasmius epiphyllus) on a maple leaf taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Larch and pine trees at snowfall in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Deadly fibrecap mushrooms Inocybe erubescens under maple trees in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 28, 2017
 Ring-like growth of thin white arachnoid corticioid fungus (mushroom) Athelia arachnoidea(?) killing lichens on a trunk of a maple in Sosnovka Park. Saint Petersburg, Russia, February 3, 2017
 Rooting bolete mushrooms (Caloboletus radicans, Boletus radicans) on a lawn under maple and linden trees near Dvortsovaya Street in Alexander Park in Pushkin, former Tsarskoe Selo, near Saint Petersburg. Russia, September 7, 2017
 Rooting bolete mushrooms (Caloboletus radicans, Boletus radicans) on a lawn under maple and linden trees near Dvortsovaya Street in Alexander Park in Pushkin, former Tsarskoe Selo, near Saint Petersburg. Russia, September 7, 2017
 Blue staining rooting bolete mushrooms (Caloboletus radicans, Boletus radicans) on a lawn under maple and linden trees near Dvortsovaya Street in Alexander Park in Pushkin, former Tsarskoe Selo, near Saint Petersburg. Russia, September 7, 2017
 Pale buff caps of rooting bolete mushrooms (Caloboletus radicans, Boletus radicans) on a lawn under maple and linden trees near Dvortsovaya Street in Alexander Park in Pushkin, former Tsarskoe Selo, near Saint Petersburg. Russia, September 7, 2017
 Sticky bolete mushrooms (Suillus viscidus) under larch trees on Svetlanovsky Prospect near Sosnovka Park. Saint Petersburg, Russia, September 28, 2017
 Young leaves on a birch in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, April 16, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 8, 2016
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 20, 2016
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Birch forest with snow in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Birch alley with snow in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Mushrooms Panellus ringens on a birch in Sosnovka Park. Saint Petersburg, Russia, April 22, 2017
 Corticioid fungus on birch tree in Sosnovka Park. Saint Petersburg, Russia, March 23, 2017
 Birch alley in swampy area in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 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
 Some crustous fibrillous fungus on a birch tree in Sosnovka Park. Saint Petersburg, Russia, September 13, 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, June 22, 2017
 Timber mushrooms Lentinellus castoreus on a birch log in Sosnovka Park. Saint Petersburg, Russia, September 2, 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, September 16, 2017
 Chaga (Inonotus obliquus) on a birch behind a shooting range in Sosnovka Park. Saint Petersburg, Russia, May 11, 2017
 Slime mold Fuligo leviderma on a birch in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017
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