 Tar rot on maple leaves (Rhytisma acerinum) in Sosnovka Park. Saint Petersburg, Russia, October 8, 2016
 Tar rot fungus (Rhytisma acerinum) on fallen maple leaves in Sosnovka Park. Saint Petersburg, Russia, March 23, 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 a maple leaf taken from Sosnovka Park. Saint Petersburg, Russia, March 23, 2017
 Sycamore tarspot fungus (Rhytisma acerinum) on fallen maple leaves in a forest along the gulf in area of Lisiy Nos - Morskaya, west from Saint Petersburg. Russia, September 26, 2017
 Sycamore tarspot fungus (Rhytisma acerinum) in a forest along the gulf in area of Lisiy Nos - Morskaya, west from Saint Petersburg. Russia, September 26, 2017
 Maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 8, 2016
 Yellow maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 20, 2016
 Frozen maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Birch alley with maple leaves in Sosnovka Park. Saint Petersburg, Russia, October 20, 2016
 Spirea bush with fallen maple leaves in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 26, 2016
 Maple leaf in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Maple leaves in Lesnoy Park. Saint Petersburg, Russia, October 8, 2016
 Some white agaric mushroom (Amanita sp.) found under leaves in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 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
 Maple with yellow leaves in Polytechnichesky Institute (Technical University) Park. Saint Petersburg, Russia, October 25, 2016
 Brown maple leaves in Lisiy Nos, west from Saint Petersburg. Russia, October 9, 2016
 Road with maple leaves near Lisiy Nos, west from Saint Petersburg. Russia, October 19, 2016
 Ditch with maple leaves near Lisiy Nos, west from Saint Petersburg. Russia, October 19, 2016
 Leaf parachute mushrooms (Marasmius epiphyllus) on a maple leaf taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Maple leaves in Novodevichye Cemetery at Moskovskiy Prospect. Saint Petersburg, Russia, October 18, 2016
 Maple leaves in Novodevichye Cemetery at Moskovskiy Prospect. Saint Petersburg, Russia, October 18, 2016
 Maple leaves at 15 Vyborgskaya Street in Vyborg, north from Saint Petersburg. Russia, October 7, 2016
 Maple leaves on Komissarovskaya Lane in Volkovo Cemetery. Saint Petersburg, Russia, October 17, 2016
 Lane with maple leaves in Novodevichye Cemetery at Moskovskiy Prospect. Saint Petersburg, Russia, October 18, 2016
 Lane with maple leaves in Novodevichye Cemetery at Moskovskiy Prospect. Saint Petersburg, Russia, October 18, 2016
 Maple leaves in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 15, 2016
 Yellow maple leaves in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 26, 2016
 Sretenskaya Lane with maple leaves in Smolenskoe Cemetery of Vasilievsliy Island. Saint Petersburg, Russia, October 27, 2016
 Yellow maple leaves in Smolenskoe Lutheran Cemetery on Dekabristov Island. Saint Petersburg, Russia, October 28, 2016
 Carpet of maple leaves in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 20, 2016
 Orange maple leaves in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 15, 2016
 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
 Deer sculpture with maple leaves in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 20, 2016
 Maple leaves covering ground in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 20, 2016
 Maple leaves carpeting ground in Smolenskoe Lutheran Cemetery on Dekabristov Island. Saint Petersburg, Russia, October 28, 2016
 Maple leaves near Volkovka River in Literatorskie Mostki section of Volkovo Cemetery. Saint Petersburg, Russia, October 17, 2016
 Tomb bench with maple leaves in Literatorskie Mostki section of Volkovo Cemetery. Saint Petersburg, Russia, October 17, 2016
 Maple trees in Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Maple alley in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Brown leaves of maple on Architecture Lane in Literatorskie Mostki section of Volkovo Cemetery. Saint Petersburg, Russia, October 17, 2016
 Yellow leaves of maple carpeting ground in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 26, 2016
 Snow on yellow leaves in Sosnovka Park. Saint Petersburg, Russia, October 25, 2016
 Leaves in a pool of water in Sosnovka Park. Saint Petersburg, Russia, October 8, 2016
 Birch and 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
 Bonnet mushrooms (Mycena sp.) growing on small leaves taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Bracket fungus sculpture on a maple alley in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 20, 2016
 Wood blewit mushroom (Clitocybe nuda, Lepista nuda) under fallen leaves in Lisiy Nos, west from Saint Petersburg. Russia, October 9, 2016
 Poroid fungus (mushroom) Trichaptum fuscoviolaceum in Sosnovka Park. Saint Petersburg, Russia, September 6, 2016
 Coral spot fungus (Nectria cinnabarina mushrooms) on a twig taken from 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
 Purple jellydisc fungus (Ascocoryne sarcoides mushroom) in Sosnovka Park. Saint Petersburg, Russia, August 25, 2016
 Small bonnet mushroom (Mycena sp.) with moss taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Hydnoid corticioid fungus Steccherinum(?) on an old bracket polypore mushroom on a fallen birch tree in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 Close up of candlesnuff fungus (carbon antlers mushrooms, Xylaria hypoxylon) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Coral spot fungus (Nectria cinnabarina mushroom) on a twig in Sosnovka Park. Saint Petersburg, Russia, August 28, 2016
 Tinder polypore mushroom (bracket fungus, Fomes fomentarius) in Sosnovka Park. Saint Petersburg, Russia, August 16, 2016
 Close up of toothed jelly fungus (Pseudohydnum gelatinosum mushroom) in Sosnovka Park. Saint Petersburg, Russia, August 25, 2016
 Fallen leaves in Lisiy Nos, west from Saint Petersburg. Russia, October 9, 2016
 Candlesnuff fungus (stag s horn, carbon antlers mushrooms, Xylaria hypoxylon) taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Hawthorn twiglet mushrooms (Tubaria dispersa) among fallen leaves in Dubki Park in Sestroretsk, west from Saint Petersburg. Russia, October 2, 2016
 Toothed jelly fungus (Pseudohydnum gelatinosum mushroom) on rotten timber in Sosnovka Park. Saint Petersburg, Russia, August 25, 2016
 Fallen linden leaves in Lisiy Nos, west from Saint Petersburg. Russia, October 9, 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) on a stump of swida or mountain ash in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Rusty leaves of maple damaged by fungus in Novodevichye Cemetery at Moskovskiy Prospekt. Saint Petersburg, Russia, September 22, 2015
 Young leaves of maple near train station of Komarovo, 25 miles north-west from Saint Petersburg. Russia, May 9, 2016
 Toothed jelly fungus (Pseudohydnum gelatinosum mushroom) together with bolete mushrooms grown nearby in Sosnovka Park. Saint Petersburg, Russia, August 25, 2016
 Birch polypore mushroom Piptoporus betulinus (bracket fungus Fomitopsis betulina, Russian name Trutovik) in Sosnovka Park. Saint Petersburg, Russia, August 25, 2016
 Maple trees near Lisiy Nos, west from Saint Petersburg. Russia, October 19, 2016
 Maple trees near Olginsky Pond. Saint Petersburg, Russia, October 25, 2016
 Old birch bolete mushroom (bog bolete, Leccinum holopus) in Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
 Alley with yellow leaves in Sosnovka Park. Saint Petersburg, Russia, October 3, 2017
 Reddish brown crust of fungus (mushroom) Hymenochaetopsis tabacina (Pseudochaete tabacina)(?) in Sosnovka Park. Saint Petersburg, Russia, December 31, 2016
 Maple Alley in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, October 11, 2016
 Fungus Hypomyces armeniacus on rotting leaves in Sosnovka Park. Saint Petersburg, Russia, August 14, 2017
 Birch leaves covering a road in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Fungus Hypomyces armeniacus on rotting leaves on the ground in Sosnovka Park. Saint Petersburg, Russia, August 14, 2017
 Dog sick slime mould (Mucilago crustacea) among dry leaves and fallen sticks on the ground in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 Maple tree in Literatorskie Mostki section of Volkovo Cemetery. Saint Petersburg, Russia, October 17, 2016
 Maple alley in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 20, 2016
 Maple alley in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 26, 2016
 Maple bush in Nikolskoe Cemetery of Alexander Nevsky Lavra. Saint Petersburg, Russia, October 18, 2016
 Maple trees in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 20, 2016
 Maple alley in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 15, 2016
 Rust fungus Puccinia urticata on leaves of common (stinging) nettle in Sosnovka Park. Saint Petersburg, Russia, May 27, 2017
 Hyphae of mycelium of some fungus on a fallen pine in Sosnovka Park. Saint Petersburg, Russia, April 4, 2017
 Some white corticioid fungus on a fallen tree in wet area in Sosnovka Park. Saint Petersburg, Russia, May 8, 2021
 Red maple near alpine hills in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 15, 2016
 Mushrooms Melanoleuca verrucipes on dry leaves, mulch and wood chips in Sosnovka Park. Saint Petersburg, Russia, July 11, 2016
 Orange leaves on demolished garages in area of former prisoner of war camps in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Yellow leaves on demolished garages in area of former prisoner of war camps in Sosnovka Park. Saint Petersburg, Russia, October 8, 2017
 Death cap mushroom (Amanita phalloides) among yellow leaves in Lisiy Nos, west from Saint Petersburg. Russia, October 9, 2016
 Crust of fungus Trichaptum fuscoviolaceum on a fallen pine in Sosnovka Park. Saint Petersburg, Russia, April 4, 2017
 Corticioid fungus Steccherinum fimbriatum on underside of a fallen tree in Sosnovka Park. Saint Petersburg, Russia, May 8, 2021
 Texture of some white corticioid fungus on a fallen tree in wet area in Sosnovka Park. Saint Petersburg, Russia, May 8, 2021
 Hen-of-the-wood fungus (polypore mushroom Grifola frondosa) near an old oak in Dubki Park in Sestroretsk, west from Saint Petersburg. Russia, October 2, 2016
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