 Yellow brittlegill mushrooms (Russula claroflava(?)) partially lit by ultraviolet light in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 Yellow brittlegill (Russula) mushrooms in Sosnovka Park. Saint Petersburg, Russia, July 20, 2017
 Mature and a young pink brittlegill (Russula) mushrooms in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 Yellow brittlegill mushrooms (Russula) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Red brittlegill mushrooms (Russula) in Sosnovka Park. Saint Petersburg, Russia, July 30, 2017
 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
 Ochre brittlegill mushrooms (Russula ochroleuca) in Sosnovka Park. Saint Petersburg, Russia, July 12, 2017
 Green brittlegill mushrooms (Russula aeruginea) in Sosnovka Park. Saint Petersburg, Russia, July 22, 2017
 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
 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
 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
 Milk-white brittlegill mushrooms (Russula delica) in Sosnovka Park. Saint Petersburg, Russia, July 12, 2017
 Winecork brittlegill mushrooms (Russula adusta) on a lawn in Sosnovka Park. Saint Petersburg, Russia, July 24, 2017
 Bare teeth brittlegill mushrooms (Russula vesca) in Sosnovka Park. Saint Petersburg, Russia, July 24, 2017
 Group of milk-white brittlegill mushrooms (Russula delica) in Sosnovka Park. Saint Petersburg, Russia, July 12, 2017
 Ochre brittlegill mushroom (Russula ochroleuca(?)) in Sosnovka Park. Saint Petersburg, Russia, July 6, 2017
 Green brittlegill mushroom (Russula aeruginea) in Sosnovka Park. Saint Petersburg, Russia, July 16, 2017
 Yellow brittlegill mushrooms (Russula risigallina, Russula lutea) near Lisiy Nos, south from Saint Petersburg. Russia, September 3, 2016
 Red brittlegill (Russula) mushrooms in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
 Winecork brittlegill mushrooms (Russula adusta) near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024
 Cracked cap of milk-white brittlegill mushroom (Russula delica) in Sosnovka Park. Saint Petersburg, Russia, July 12, 2017
 Orange brittlegill (Russula) mushrooms in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
 Brittlegill mushrooms Russula pectinata(?) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Underside of winecork brittlegill mushrooms (Russula adusta) near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024
 Young stinking brittlegill mushrooms (Russula foetens) near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024
 Primrose brittlegill mushrooms Russula sardonia in Sosnovka Park. Saint Petersburg, Russia, August 25, 2016
 Green brittlegill mushrooms (Russula aeruginea) in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
 Pink brittlegill (Russula) mushrooms in moss in Sosnovka Park. Saint Petersburg, Russia, September 2, 2017
 First in season brittlegill mushrooms Russula nauseosa(?) in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
 Stinking brittlegill mushrooms (Russula foetens, Russian name Valuy) near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024
 Bleached brittlegill mushrooms (Russula exalbicans) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Milk white brittlegill mushrooms (Russula delica) on a lawn in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, July 31, 2024
 Milk-white brittlegill mushrooms (Russula delica) in Sosnovka Park. Saint Petersburg, Russia, September 4, 2018
 Caps of bleached brittlegill mushrooms (Russula exalbicans) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Milk white brittlegill mushrooms (Russula delica(?)) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Stinking brittlegill mushrooms (Russula foetens) on Lenin Trail near Dibuny, north-west from Saint Petersburg. Russia, July 29, 2024
 Red brittlegill (Russula sp.) mushrooms on a forest path in swampy area of Sosnovka Park. Saint Petersburg, Russia, September 24, 2015
 Large mature milk white brittlegill mushrooms (Russula delica(?)) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Cross section of milk white brittlegill mushrooms (Russula delica(?)) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Pale pink brittlegill mushrooms (Russula) near a road west from Kavgolovskoe Lake (Syariunlakhti), near Toksovo. North from Saint Petersburg, Russia, July 26, 2024
 Green-violet brittlegill mushrooms (Russula) near a road west from Kavgolovskoe Lake (Syariunlakhti), near Toksovo. North from Saint Petersburg, Russia, July 26, 2024
 Large caps of mature milk white brittlegill mushrooms (Russula delica(?)) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Pink brittlegill (Russula) mushrooms in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024
 Red brittlegill (Russula) mushrooms under spruce trees in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024
 Grey brittlegill (Russula) mushrooms 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
 Pale brown, almost white fragile brittlegill (Russula) mushrooms in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024
 Common yellow brittlegill (Russula ochroleuca) mushrooms in Tarkhovka near Sestroretsk, west from Saint Petersburg. Russia, August 27, 2018
 Pink brittlegill (Russula) mushroom in moss on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Group of common yellow brittlegill (Russula ochroleuca) mushrooms in Tarkhovka near Sestroretsk, west from Saint Petersburg. Russia, August 27, 2018
 Underside of a bleached brittlegill mushroom (Russula exalbicans) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Pink brittlegill (Russula) mushrooms in Petiayarvi, north from Saint Petersburg. Russia, August 3, 2024
 Green brittlegill mushrooms (Russula aeruginea) on a trail across the swamp in Yuntolovsky Park. Saint Petersburg, Russia, July 7, 2017
 Underside of milk white brittlegill mushroom (Russula delica(?)) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 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
 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
 Group of green brittlegill mushrooms (Russula aeruginea) on a trail across the swamp in Yuntolovsky Park. Saint Petersburg, Russia, July 7, 2017
 Cross section of milk white brittlegill mushroom (Russula delica(?)) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024
 Pink brittlegill (Russula) mushrooms with darkening gills in Kuzmolovo, north from Saint Petersburg. Russia, August 9, 2024
 Pink brittlegill mushrooms (Russula) in Lisiy Nos, west from Saint Petersburg. Russia, July 2, 2017
 Brown brittlegill mushrooms (Russula) in Toksovo, suburb of Saint Petersburg. Russia, July 19, 2016
 Purple brittlegill mushrooms (Russula) in Toksovo, suburb of Saint Petersburg. Russia, July 19, 2016
 Red brittlegill mushrooms (Russula, Russian name Syroezhka) near Orekhovo, north from Saint Petersburg. Russia, July 27, 2016
 Red brittlegill mushrooms (Russula) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 14, 2017
 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
 Copper brittlegill mushrooms (Russula decolorans(?)) in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 29, 2017
 Pale brown brittlegill mushrooms (Russula) in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 29, 2017
 Brittlegill mushrooms Russula pectinata(?) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 29, 2017
 Brittlegill mushrooms Russula pectinata near a memorial in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 29, 2017
 Menthol brittlegill mushrooms (Russula albonigra) near Pesochnaya, north-west from Saint Petersburg. Russia, July 23, 2017
 Light brown brittlegill (Russula) mushrooms on an old sand dune overgrown by pine forest in Sestroretskoye Swamp near Saint Petersburg. Russia, August 11, 2024
 Underside of a grey brittlegill (Russula) mushroom in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Top view of a grey brittlegill (Russula) mushroom in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024
 Pink brittlegill mushrooms (Russula, Russian name Syroezhka) between Orekhovo and Lembolovo, north from Saint Petersburg. Russia, July 27, 2016
 Grey brittlegill mushrooms (Russula, Russian name Syroezhka) on roadside near Orekhovo, north from Saint Petersburg. Russia, July 27, 2016
 Swamp brittlegill mushrooms (Russula paludosa) at Eco Trail Sestroretskoye Swamp near Saint Petersburg. Russia, August 11, 2024
 Blackened mature menthol brittlegill mushroom (Russula albonigra) in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024
 Violet brittlegill mushrooms (Russula, Russian name Syroezhka) on roadside between Orekhovo and Lembolovo, north from Saint Petersburg. Russia, July 27, 2016
 Violet brittlegill mushrooms (Russula, Russian name Syroezhka) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 24, 2016
 Violet brittlegill mushrooms (Russula, Russian name Syroezhka) growing in sand near Orekhovo, north from Saint Petersburg. Russia, July 27, 2016
 Brittlegill mushrooms (Russula albonigra, Russian name Podgruzdok) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 24, 2016
 Dark red brittlegill mushrooms (Russula, Russian name Syroezhka) on roadside near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 24, 2016
 Brittlegill mushrooms (Russula albonigra, Russian name Podgruzdok) on roadside near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 24, 2016
 Yellow puffball mushrooms Bovista colorata in Sosnovka Park. Saint Petersburg, Russia, July 11, 2016
 Yellow fieldcap mushrooms (Bolbitius titubans) in Sosnovka Park. Saint Petersburg, Russia, July 20, 2017
 Charcoal Burner brittlegill mushrooms (Russula cyanoxantha(?), Russian name Syroezhka) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 24, 2016
 Brittlegill mushrooms Russula exalbicans and a brown birch bolete (Leccinum scabrum) on a lawn at 12K3 Tikhoretsky Prospect. Saint Petersburg, Russia, July 1, 2017
 Common yellow brittlegill (Russula ochroleuca) mushroom near Kavgolovskoe Lake south from Oselki, 8 miles north from Saint Petersburg. Russia, August 25, 2013
 Yellow fieldcap mushrooms (Bolbitius titubans) on burnt wood in Sosnovka Park. Saint Petersburg, Russia, July 20, 2017
 Underside of a blackening brittlegill mushroom (Russula nigricans) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Top view of a blackening brittlegill mushroom (Russula nigricans) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Brittlegill mushrooms Russula pectinata(?) in Park of Polytechnic Institute. Saint Petersburg, Russia, September 19, 2017
 Yellow-green fluorescence of gills of sulphur tuft mushrooms (Hypholoma fasciculare) under ultraviolet light, collected in Sosnovka Park. Saint Petersburg, Russia, August 6, 2024
 Cross section of a blackening brittlegill mushroom (Russula nigricans) near Orekhovo, north from Saint Petersburg. Russia, August 1, 2024
 Brittlegill and Tricholoma(?) mushrooms near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024
 Menthol brittlegill mushrooms (Russula albonigra) in Tarkhovka Park, west from Saint Petersburg. Russia, August 26, 2017
 Fenugreek milkcap mushrooms (Lactarius helvus) in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
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