 Top view of a grey brittlegill (Russula) mushroom in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Grey brittlegill (Russula) mushrooms in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Underside of Coprin de Romagnesi mushrooms (Coprinopsis romagnesiana) near an oak in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Oakbug milkcap mushroom (Lactarius quietus) in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Section of a common earthball mushroom (Scleroderma citrinum) in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Top view of oakbug milkcap mushroom (Lactarius quietus) in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Section of an oakbug milkcap mushroom (Lactarius quietus) in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Gills of oakbug milkcap mushroom (Lactarius quietus) in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Dark green brittlegill (Russula) mushroom in Dubki Park. Sestroretsk near Saint Petersburg, Russia, September 5, 2017
 Close-up of section of a common earthball mushroom (Scleroderma citrinum) in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Gills of a dark green brittlegill (Russula) mushroom in Dubki Park. Sestroretsk near Saint Petersburg, Russia, September 5, 2017
 Coprin de Romagnesi mushrooms (Coprinopsis romagnesiana) near a big oak in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Powdery mildew of oak (Erysiphe alphitoides) on oak seedlings in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Common earthball mushrooms (Scleroderma citrinum) in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Chicken of the woods mushrooms (Laetiporus sulphureus) on an oak stump(?) in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Oak seedlings discolored by powdery mildew of oak (Erysiphe alphitoides) in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Mature common earthball mushrooms (Scleroderma citrinum) in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Mature Chicken of the woods mushrooms (Laetiporus sulphureus) on a giant oak in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Underside of a blackening brittlegill mushroom (Russula nigricans) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Whitish covering of oak leaves caused by powdery mildew of oak (Erysiphe alphitoides) in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Underside of pink brittlegill (Russula) mushrooms in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024
 Underside of brittlegill (Russula) mushroom when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 Fly agaric (Amanita muscaria) mushroom in Dubki (Oaks) Park in Sestroretsk, west from Saint Petersburg. Russia, September 5, 2013
 Underside of a bleached brittlegill mushroom (Russula exalbicans) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Blackened mature menthol brittlegill mushroom (Russula albonigra) in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024
 Underside of milk white brittlegill mushroom (Russula delica(?)) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Top view of a blackening brittlegill mushroom (Russula nigricans) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Orange brittlegill mushrooms Russula paludosa(?) in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, August 18, 2018
 Cross section of a blackening brittlegill mushroom (Russula nigricans) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Common yellow brittlegill (Russula ochroleuca) mushrooms in Tarkhovka near Sestroretsk, west from Saint Petersburg. Russia, August 27, 2018
 Road in Dubki (Oaks) Park in Sestroretsk, west from Saint Petersburg. Russia, September 5, 2013
 Group of common yellow brittlegill (Russula ochroleuca) mushrooms in Tarkhovka near Sestroretsk, west from Saint Petersburg. Russia, August 27, 2018
 Yellow mushrooms Hypholoma sp.(?) among dry leaves in Dubki (Oaks) Park in Sestroretsk, west from Saint Petersburg. Russia, September 5, 2013
 Elf caps mushrooms (Mycena inclinata) in Dubki (Oaks) Park in Sestroretsk, west from Saint Petersburg. Russia, September 5, 2013
 Pink brittlegill (Russula) mushrooms in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024
 Underside of winecork brittlegill mushrooms (Russula adusta) near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024
 Young honey mushrooms Armillaria borealis(?) in Dubki (Oaks) Park in Sestroretsk, west from Saint Petersburg. Russia, September 5, 2013
 Red brittlegill (Russula) mushrooms under spruce trees in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024
 Greying brittlegill mushroom (Russula decolorans) together with Russula covered by fungus Hypomyces viridis in Dibuny, north-west from Saint Petersburg, Russia, August 9, 2016
 Sulphur Tuft mushrooms (Hypholoma fasciculare)(?) stump in Dubki (Oaks) Park in Sestroretsk, west from Saint Petersburg. Russia, September 5, 2013
 Sulphur Tuft mushrooms (Hypholoma fasciculare)(?) on a tree stump in Dubki (Oaks) Park in Sestroretsk, west from Saint Petersburg. Russia, September 5, 2013
 Pale brown, almost white fragile brittlegill (Russula) mushrooms in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024
 Brittlegill (Russula sp.) mushroom in Okhtinsky Park near Toksovo, suburb of Saint Petersburg. Russia, August 29, 2013
 Pink brittlegill (Russula) mushrooms in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Fragile brittlegill mushroom (Russula fragilis) in Tarkhovka Park, west from Saint Petersburg. Russia, August 26, 2017
 Winecork brittlegill mushrooms (Russula adusta) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Winecork brittlegill mushrooms (Russula adusta) in Kuzmolovo, north from Saint Petersburg. Russia, August 9, 2024
 Brown brittlegill mushroom (Russula consobrina) in Okhtinsky Park near Toksovo, suburb of Saint Petersburg. Russia, August 29, 2013
 Pink brittlegill (Russula) mushrooms with darkening gills in Kuzmolovo, north from Saint Petersburg. Russia, August 9, 2024
 Top view of a pink brittlegill (Russula) mushroom when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 Top view of a brown brittlegill (Russula) mushroom when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 Cracked cap of a mature brittlegill (Russula) mushroom when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 Grey brittlegill mushrooms (Russula, Russian name Syroezhka) on roadside near Orekhovo, north from Saint Petersburg. Russia, July 27, 2016
 Underside of partially dried brittlegill mushroom Russula compacta in Bastrop State Park. Bastrop, Texas, May 17, 2024
 Underside of brittlegill mushrooms Russula albidula under blackjack oaks in Lick Creek Park. College Station, Texas, November 4, 2021
 Underside of brittlegill mushrooms Russula eccentrica under small oaks in Lick Creek Park. College Station, Texas, July 5, 2019
 Pink brittlegill (Russula) mushroom in moss on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Underside of grey brittlegill mushroom (Russula) on floodplain on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, June 27, 2019
 Brittlegill mushroom Russula paludosa near Dibuny, north-west from Saint Petersburg. Russia, August 20, 2017
 Greying brittlegill mushroom (Russula decolorans) near Orekhovo, north from Saint Petersburg. Russia, August 13, 2016
 Red brittlegill (Russula sp.) mushroom west from Kannelyarvi, 40 miles north from Saint Petersburg. Russia, August 7, 2012
 Brittlegill mushrooms Russula mutabilis under oaks in Lick Creek Park. College Station, Texas, May 13, 2024
 Red brittlegill (Russula) mushrooms in a dense forest near a summer house at 9a 2nd Borovaya Street in Solnechnoe, west from Saint Petersburg. Russia, August 7, 2024
 Pale violet brittlegill (Russula) mushroom near Dibuny, north-west from Saint Petersburg. Russia, August 28, 2017
 Violet brittlegill (Russula sp.) mushroom west from Kannelyarvi, 40 miles north from Saint Petersburg. Russia, August 7, 2012
 Tall brittlegill mushroom (Russula paludosa(?)) in Dibuny, north-west from Saint Petersburg, Russia, August 9, 2016
 Fragile brittlegill mushroom (Russula fragilis) near Lembolovo, 40 miles north from Saint Petersburg. Russia, August 27, 2017
 Stinking brittlegill mushrooms (Russula foetens) under oaks in Lick Creek Park. College Station, Texas, May 3, 2024
 Light brown brittlegill (Russula) mushrooms on an old sand dune overgrown by pine forest in Sestroretskoye Swamp near Saint Petersburg. Russia, August 11, 2024
 Milk white brittlegill mushroom (Russula delica(?)) in grass on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Gills of milk white brittlegill mushroom (Russula delica(?)) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Swamp brittlegill mushrooms (Russula paludosa) at Eco Trail Sestroretskoye Swamp near Saint Petersburg. Russia, August 11, 2024
 Tall brittlegill mushroom (Russula paludosa) between Orekhovo and Lembolovo, 30 miles north from Saint Petersburg. Russia, August 19, 2004
 Red brittlegill (Russula sp.) mushroom near Kavgolovskoe Lake south from Oselki, 8 miles north from Saint Petersburg. Russia, August 25, 2013
 Greying brittlegill mushroom (Russula decolorans) between Orekhovo and Lembolovo, 30 miles north from Saint Petersburg. Russia, August 19, 2004
 Rusty bolete mushroom (Boletus ferrugineus)(?) in Dubki Park. Sestroretsk near Saint Petersburg, Russia, September 5, 2017
 Cross section of milk white brittlegill mushroom (Russula delica(?)) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Tall brittlegill mushroom (Russula paludosa) near Kavgolovo Lake south from Oselki, north from Saint Petersburg. Russia, August 6, 2012
 Dissected rusty bolete mushroom (Boletus ferrugineus)(?) in Dubki Park. Sestroretsk near Saint Petersburg, Russia, September 5, 2017
 Blusher mushroom (Amanita rubescens) in Dubki Park in Sestroretsk, north-west from Saint Petersburg. Russia, July 30, 2016
 Earthball mushroom (Scleroderma citrinum) in Dubki Park in Sestroretsk, north-west from Saint Petersburg. Russia, July 30, 2016
 Underside of a large white brittlegill mushroom Russula compacta on Road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, September 21, 2024
 Yellow brittlegill mushrooms (Russula claroflava(?)) in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 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
 Underside of a brittlegill (Russula) mushroom both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 6, 2024
 Common yellow brittlegill (Russula ochroleuca) mushroom near Kavgolovskoe Lake south from Oselki, 8 miles north from Saint Petersburg. Russia, August 25, 2013
 Brittlegill mushroom Russula mutabilis(?) under post oaks in Lick Creek Park. College Station, Texas, May 13, 2022
 Mature and a young pink brittlegill (Russula) mushrooms in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 Large hen-of-the-wood fungus (polypore mushroom Grifola frondosa) in Dubki Park in Sestroretsk, west from Saint Petersburg. Russia, October 2, 2016
 Old brown cap of resinous polypore mushroom (Ischnoderma resinosum)(?) taken from an oak stump in Dubki Park in Sestroretsk, west from Saint Petersburg. Russia, April 11, 2017
 Brittlegill mushroom Russula eccentrica under small oaks in Lick Creek Park. College Station, Texas, July 5, 2019
 Brittlegill (Russula sp.) mushroom in Monrepo park. Vyborg, Russia, August 12, 2012
 Hen-of-the-wood fungus (polypore mushroom Grifola frondosa) on a root of oak tree in Dubki Park in Sestroretsk, west from Saint Petersburg. Russia, October 2, 2016
 Primrose brittlegill mushrooms Russula sardonia in Sosnovka Park. Saint Petersburg, Russia, August 25, 2016
 Yellow brittlegill mushrooms (Russula claroflava(?)) partially lit by ultraviolet light in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 Hen-of-the-wood fungus (polypore mushroom Grifola frondosa) near a base of a large oak tree in Dubki Park in Sestroretsk, west from Saint Petersburg. Russia, October 2, 2016
 Short-stemmed russula mushrooms (stubby brittlegill, Russula brevipes) under small oaks in Lick Creek Park. College Station, Texas, June 1, 2021
 Menthol brittlegill mushrooms (Russula albonigra) in Tarkhovka Park, west from Saint Petersburg. Russia, August 26, 2017
 Ochre brittlegill mushroom (Russula ochroleuca(?)) in Sosnovka Park. Saint Petersburg, Russia, July 6, 2017
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