 Green brittlegill mushroom (Russula aeruginea) in Sosnovka Park. Saint Petersburg, Russia, July 16, 2017
 Green brittlegill mushrooms (Russula aeruginea) in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
 Green brittlegill mushrooms (Russula aeruginea) on a trail across the swamp in Yuntolovsky Park. Saint Petersburg, Russia, July 7, 2017
 Group of green brittlegill mushrooms (Russula aeruginea) on a trail across the swamp in Yuntolovsky Park. Saint Petersburg, Russia, July 7, 2017
 Green brittlegill mushrooms (Russula aeruginea) near Kuzmolovo, north from Saint Petersburg. Russia, September 3, 2017
 Green brittlegill mushrooms (Russula aeruginea) near Orekhovo, 45 miles north from Saint Petersburg. Russia, September 9, 2017
 Grass-green brittlegill mushroom (Russula aeruginea, Russian name Syroezhka) in moss between Orekhovo and Lembolovo, north from Saint Petersburg. Russia, July 27, 2016
 Green brittlegill mushrooms (Russula aeruginea)(?) in sandy soil near Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, August 31, 2018
 Red brittlegill mushrooms (Russula) in Sosnovka Park. Saint Petersburg, Russia, July 30, 2017
 Yellow brittlegill (Russula) mushrooms in Sosnovka Park. Saint Petersburg, Russia, July 20, 2017
 Ochre brittlegill mushrooms (Russula ochroleuca) in Sosnovka Park. Saint Petersburg, Russia, July 12, 2017
 Bare teeth brittlegill mushrooms (Russula vesca) in Sosnovka Park. Saint Petersburg, Russia, July 24, 2017
 Winecork brittlegill mushrooms (Russula adusta) on a lawn in Sosnovka Park. Saint Petersburg, Russia, July 24, 2017
 Milk-white brittlegill mushrooms (Russula delica) in Sosnovka Park. Saint Petersburg, Russia, July 12, 2017
 Group of milk-white brittlegill mushrooms (Russula delica) in Sosnovka Park. Saint Petersburg, Russia, July 12, 2017
 Underside of young green brittlegill mushrooms (Russula aeruginea) in Lick Creek Park. College Station, Texas, May 13, 2022
 Ochre brittlegill mushroom (Russula ochroleuca(?)) in Sosnovka Park. Saint Petersburg, Russia, July 6, 2017
 Spores of of green brittlegill mushroom (Russula aeruginea(?)) collected in Sam Houston National Forest near Montgomery. Texas, July 3, 2022
 Red brittlegill (Russula) mushrooms in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
 Gills and dirty green caps of brittlegill mushrooms Russula aeruginea(?) in Lick Creek Park. College Station, Texas, June 28, 2019
 Young green brittlegill mushrooms (Russula aeruginea) under dry leaves on a sandy path in Lick Creek Park. College Station, Texas, May 13, 2022
 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
 First in season brittlegill mushrooms Russula nauseosa(?) in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
 Pink brittlegill (Russula) mushrooms in moss in Sosnovka Park. Saint Petersburg, Russia, September 2, 2017
 Yellow brittlegill mushrooms (Russula claroflava(?)) in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 Green brittlegill mushroom Russula aeruginea in Lick Creek Park. College Station, Texas, May 30, 2018
 Green brittlegill mushroom (Russula aeruginea) 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
 Underside of green brittlegill mushroom (Russula aeruginea) in Lick Creek Park. College Station, Texas, May 13, 2022
 Pink together with green brittlegill mushroom Russula aeruginea in Lick Creek Park. College Station, Texas, October 28, 2021
 Cross section of green brittlegill mushroom (Russula aeruginea) in Lick Creek Park. College Station, Texas, May 13, 2022
 Yellow brittlegill mushrooms (Russula claroflava(?)) partially lit by ultraviolet light in Sosnovka Park. Saint Petersburg, Russia, July 30, 2024
 Spores of green brittlegill mushroom (Russula aeruginea) (larger) under a microscope, collected in Lick Creek Park. College Station, Texas, May 13, 2022
 Spores of green brittlegill mushroom (Russula aeruginea) (larger) in iodine solution Lugol, collected in Lick Creek Park. College Station, Texas, May 13, 2022
 Dark green brittlegill (Russula) mushroom in Dubki Park. Sestroretsk near Saint Petersburg, Russia, September 5, 2017
 Green brittlegill mushroom Russula aeruginea on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, July 13, 2018
 Green brittlegill mushroom (Russula aeruginea(?)) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, July 3, 2022
 Green brittlegill mushroom (Russula aeruginea) on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, October 24, 2021
 Gills of a dark green brittlegill (Russula) mushroom in Dubki Park. Sestroretsk near Saint Petersburg, Russia, September 5, 2017
 Underside of green brittlegill mushroom (Russula aeruginea(?)) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, July 3, 2022
 Underside of green brittlegill mushroom (Russula aeruginea) on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, October 24, 2021
 Green-violet brittlegill mushrooms (Russula) near a road west from Kavgolovskoe Lake (Syariunlakhti), near Toksovo. North from Saint Petersburg, Russia, July 26, 2024
 Pink brittlegill mushrooms (Russula) in Lisiy Nos, west from Saint Petersburg. Russia, July 2, 2017
 Red brittlegill mushrooms (Russula) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 14, 2017
 Primrose brittlegill mushrooms Russula sardonia in Sosnovka Park. Saint Petersburg, Russia, August 25, 2016
 Green brittlegill mushrooms (Russula aeruginea) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, August 18, 2024
 Green brittlegill mushrooms (Russula aeruginea) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 28, 2022
 Brittlegill mushrooms Russula pectinata near a memorial 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
 Pale brown brittlegill mushrooms (Russula) 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
 Copper brittlegill mushrooms (Russula decolorans(?)) in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 29, 2017
 Milk-white brittlegill mushrooms (Russula delica) in Sosnovka Park. Saint Petersburg, Russia, September 4, 2018
 Greenish brittlegill mushrooms Russula aeruginea(?) in Lick Creek Park. College Station, Texas, June 28, 2019
 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
 Red brittlegill (Russula sp.) mushrooms on a forest path in swampy area of Sosnovka Park. Saint Petersburg, Russia, September 24, 2015
 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
 Brittlegill mushrooms Russula exalbicans and a brown birch bolete (Leccinum scabrum) on a lawn at 12K3 Tikhoretsky Prospect. Saint Petersburg, Russia, July 1, 2017
 Heath navel mushrooms (Lichenomphalia umbellifera) with its green thallus on peat in Sosnovka Park. Saint Petersburg, Russia, July 3, 2017
 Brittlegill mushrooms Russula pectinata(?) in Park of Polytechnic Institute. Saint Petersburg, Russia, September 19, 2017
 Green brittlegill mushroom (Russula aeruginea) with east Texas toad on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 18, 2022
 Green brittlegill mushroom (Russula aeruginea) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 13, 2024
 Menthol brittlegill mushrooms (Russula albonigra) in Tarkhovka Park, west from Saint Petersburg. Russia, August 26, 2017
 Green brittlegill mushroom (Russula aeruginea) in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 28, 2022
 Gills of a brittlegill mushroom Russula aeruginea in Lick Creek Park. College Station, Texas, May 30, 2018
 Dissected menthol brittlegill mushrooms (Russula albonigra) in Tarkhovka Park, west from Saint Petersburg. Russia, August 26, 2017
 Milk white brittlegill mushrooms (Russula delica)(?) in Tarkhovka Park, west from Saint Petersburg. Russia, August 26, 2017
 Small pinkish brittlegill (Russula) mushrooms on a lawn in Park of Polytechnic Institute. Saint Petersburg, Russia, September 19, 2017
 Milk white brittlegill mushroom (Russula delica) in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 29, 2017
 Stinking brittlegill mushroom (Russula foetens) on an old railroad path near Kuzmolovo, north from Saint Petersburg. Russia, July 26, 2017
 Purple brittlegill mushrooms (Russula) near Orekhovo, 45 miles north from Saint Petersburg. Russia, September 9, 2017
 Bright red brittlegill (Russula) mushrooms near Orekhovo, 45 miles north from Saint Petersburg. Russia, September 9, 2017
 Some violet brittlegill mushrooms (Russula) near Dibuny, north-west from Saint Petersburg. Russia, September 28, 2017
 Stinking brittlegill mushrooms (Russula foetens) near Lisiy Nos. West from Saint Petersburg, Russia, August 23, 2017
 Winecork brittlegill mushrooms (Russula adusta) near Kuzmolovo, north from Saint Petersburg. Russia, September 3, 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
 Stinking brittlegill mushrooms (Russula foetens) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, August 5, 2017
 Brittlegill mushrooms Russula pectinata on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, August 19, 2017
 Pink brittlegill mushrooms Russula paludosa(?) near Dibuny, north-west from Saint Petersburg. Russia, August 20, 2017
 Winecork brittlegill mushrooms (Russula adusta) in Orekhovo, 40 miles north from Saint Petersburg. Russia, August 18, 2017
 Bare teeth brittlegill mushrooms (Russula vesca) near Kuzmolovo, north from Saint Petersburg. Russia, August 10, 2017
 Pair of violet brittlegill mushrooms (Russula) near Dibuny, north-west from Saint Petersburg. Russia, September 28, 2017
 Brittlegill mushrooms Russula pectinata(?) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, August 13, 2017
 Pale orange brittlegill mushrooms (Russula) in Gardens of Polytechnic Institute. Saint Petersburg, Russia, August 13, 2017
 Stinking brittlegill mushrooms (Russula foetens) in Gardens of Polytechnic Institute. Saint Petersburg, Russia, August 19, 2017
 Red brittlegill mushrooms (Russula, Russian name Syroezhka) near Orekhovo, north from Saint Petersburg. Russia, July 27, 2016
 Winecork brittlegill mushrooms (Russula adusta) near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024
 Bare teeth brittlegill mushrooms (Russula vesca) in Orekhovo, 40 miles north from Saint Petersburg. Russia, August 18, 2017
 Milk white brittlegill mushrooms (Russula delica) in Gardens of Polytechnic Institute. Saint Petersburg, Russia, August 19, 2017
 Dark red brittlegill mushrooms (Russula, Russian name Syroezhka) near Rappolovo and Toksovo, north from Saint Petersburg. Russia, September 1, 2017
 Violet brittlegill mushrooms (Russula) in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, August 1, 2017
 Brown brittlegill mushrooms (Russula) in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, August 1, 2017
 Dark red brittlegill mushrooms (Russula) in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, August 1, 2017
 Dark red crab brittlegill mushrooms (Russula xerampelina) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 11, 2017
 Brittlegill (Russula) mushrooms with dark brown center in Gardens of Polytechnic Institute. Saint Petersburg, Russia, August 13, 2017
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