 Leaf parachute mushrooms (Marasmius epiphyllus) on a maple leaf taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Leaf parachute mushrooms (Marasmius epiphyllus) on a rotten leaf of birch taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Maple leaf in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Leaf parachute mushrooms (Marasmius epiphyllus) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Fern leaf in greenhouses of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, January 5, 2016
 Fir-oak-fern rust (Hyalopsora aspidiotus) fungus on a leaf of northern oak fern Gymnocarpium dryopteris near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 14, 2017
 Hairy fern leaf in greenhouses of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, January 5, 2016
 Branching fern leaf in greenhouses of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, January 5, 2016
 Back lit fern leaf in greenhouses of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, January 5, 2016
 Round leaf of fern in greenhouses of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, January 5, 2016
 Back side of a fern leaf in greenhouses of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, January 5, 2016
 Rusty underside of a leaf of northern oak fern Gymnocarpium dryopteris affected by a fungal disease fir-oak-fern rust (Hyalopsora aspidiotus) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 14, 2017
 Fern leaf in Dubki Park in Sestroretsk, west from Saint Petersburg. Russia, May 20, 2019
 Fern leaf in Sobstvennaya Dacha Park. Old Peterhof, west from Saint Petersburg, Russia, May 17, 2019
 Fern leaf in a forest in Pavlovsk Park. South from Saint Petersburg, Russia, July 21, 2012
 First snow in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Fern leaf in Petiayarvi, 50 miles north from Saint Petersburg. Russia, August 31, 2013
 Pine trees in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Pine forest in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 20, 2016
 Birch trees in Sosnovka Park. Saint Petersburg, Russia, October 20, 2016
 Bushes with snow in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Alley in snow in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Birch alley in Sosnovka Park. Saint Petersburg, Russia, October 8, 2016
 Maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 8, 2016
 Fern leaf in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 26, 2014
 Snow on yellow leaves in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Various bonnet mushrooms (Mycena sp.) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Yellow maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 20, 2016
 Various bonnet mushrooms (Mycena sp.) taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Yellow bushes with snow in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Frozen maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Leaves in a pool of water in Sosnovka Park. Saint Petersburg, Russia, October 8, 2016
 Fern leaf in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 9, 2014
 Scalycap mushrooms (Pholiota spumosa)(?) in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Birch alley in swampy area in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Caps of various bonnet mushrooms (Mycena sp.) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Tar rot on maple leaves (Rhytisma acerinum) in Sosnovka Park. Saint Petersburg, Russia, October 8, 2016
 Toadstools (small mushrooms) of various colors taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Birch alley with maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 20, 2016
 Different kind of bonnet mushrooms (Mycena sp.) taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Young leaf of bracken fern (Pteridium aquilinum) in Menkovo, south from Saint Petersburg. Russia, June 4, 2014
 Leaf of fern in greenhouses of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, March 8, 2017
 Milking bonnet mushrooms (Mycena galopus)(?) in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Small orange webcap mushrooms (Cortinarius sp.) taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Scurfy twiglet mushrooms (Tubaria furfuracea) in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Rooting bonnet mushrooms (Mycena megaspora) taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Some late funnel mushrooms (Clitocybe rivulosa)(?) in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Yellowleg bonnet mushrooms (Mycena epipterygia) taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Rooting bonnet mushrooms (Mycena megaspora) taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Small bonnet mushroom (Mycena sp.) with moss taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Caps of toadstools (small mushrooms) of various colors taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Milking bonnet mushrooms (Mycena galopus)(?) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Mealy funnel mushrooms (Clitocybe vibecina)(?) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Scurfy deceiver mushrooms (Laccaria proxima) taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Common bonnet mushrooms (Mycena galericulata) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Scurfy twiglet mushrooms (Tubaria furfuracea) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Scurfy twiglet mushrooms (Tubaria furfuracea) taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Details of a fern leaf in a greenhouse in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, February 23, 2017
 Fine leaf of fern in greenhouses of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, March 8, 2017
 Some white agaric mushroom (Amanita sp.) found under leaves in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Bonnet mushrooms (Mycena sp.) growing on small leaves taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Toadstools (small mushrooms) collected in swampy part in Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Yellowing curtain crust mushrooms (Stereum subtomentosum) in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Common bonnet mushrooms (Mycena galericulata) on a stump in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Gills of common bonnet mushrooms (Mycena galericulata) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Late fall oyster mushrooms (Panellus serotinus) in Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Common bonnet mushroom (Mycena galericulata) in swampy area in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Candlesnuff fungus (carbon antlers mushrooms, Xylaria hypoxylon) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Bonnet mushrooms Mycena alexandri growing on pine needles in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Scurfy twiglet mushrooms (Tubaria furfuracea) on rotten wood taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Bonnet mushrooms Mycena alexandri growing on pine needles taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Pear-shaped stump puffball mushrooms (Lycoperdon pyriforme)(?) in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Various small bonnet mushrooms (Mycena sp.) found in swampy area in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Yellowing curtain crust mushrooms (Stereum subtomentosum) on a birch log in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Tar rot fungus on fallen maple leaves, Rhytisma acerinum mushroom, in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Coral spot fungus (Nectria cinnabarina mushrooms) on a twig taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Leaf parachute mushrooms (Marasmius epiphyllus) in Lisiy Nos, west from Saint Petersburg. Russia, October 9, 2016
 Close up of bonnet mushrooms Mycena alexandri growing on pine needles taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Close up of candlesnuff fungus (carbon antlers mushrooms, Xylaria hypoxylon) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Tar rot fungus (Rhytisma acerinum) on a maple leaf taken from Sosnovka Park. Saint Petersburg, Russia, March 23, 2017
 Back lit leaf of black chokeberry (Aronia melanocarpa) in Sosnovka Park in Saint Petersburg. Russia, May 31, 2011
 Candlesnuff fungus (stag s horn, carbon antlers mushrooms, Xylaria hypoxylon) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Compact group of pear-shaped stump puffball mushrooms (Lycoperdon pyriforme) in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Flowers of white dead-nettle (Lamium album, Russian name Glukhaya Krapiva) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Back lit leaf of mountain ash (Sorbus aucuparia, Russian name Ryabina) in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
 Young leaf of mountain ash (Sorbus aucuparia, Russian name Ryabina) in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
 Silver leaf fungus (Chondrostereum purpureum mushrooms) in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017
 Candlesnuff fungus (carbon antlers mushrooms, Xylaria hypoxylon) on a stump of swida or mountain ash in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Close up of a young leaf of mountain ash (Sorbus aucuparia, Russian name Ryabina) in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
 Red velvety patches on a birch leaf caused by the eriophyid mite in Sosnovka Park. Saint Petersburg, Russia, June 29, 2017
 Red velvety patches on a birch leaf (velvet erineum galls) in Sosnovka Park. Saint Petersburg, Russia, June 29, 2017
 Underside of a leaf with coltsfoot rust gall fungus, Puccinia poarum, in Sosnovka Park. Saint Petersburg, Russia, May 27, 2019
 Old birch bolete mushroom (bog bolete, Leccinum holopus) in Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Dew on a leaf of fern near Fall Creek and arboretum. Ithaca, New York, October 11, 2005
 Birch milkcap mushrooms (Lactarius tabidus, Lactarius theiogalus) taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
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