 Spores (in KOH, spore print dark brown) of common stump brittlestem mushrooms (Psathyrella piluliformis)(?) collected earlier 10/5/2025 on roadside in Petyayarvi, north from Saint Petersburg, Russia, October 19, 2025
 Common stump brittlestem mushrooms (Psathyrella piluliformis)(?) on a forest cutting in Dibuny, north-west from Saint Petersburg. Russia, September 18, 2017
 Common stump brittlestem mushrooms (Psathyrella piluliformis)(?) on mulch on a forest cutting near Dibuny, north-west from Saint Petersburg. Russia, September 18, 2017
 Common stump brittlestem mushrooms (Psathyrella piluliformis)(?) on wood chips on a forest cutting under power lines near Dibuny, north-west from Saint Petersburg. Russia, September 18, 2017
 Spores (in KOH, spore print black) of brittlestem mushrooms (Psathyrella corrugis) collected earlier 10/6/2025 on a forest trail in Pavlovsk, a suburb of Saint Petersburg, Russia, October 19, 2025
 Spores of roothole rosette mushrooms (Stereopsis vitellina) collected earlier 10/5/2025 in a burrow near a road under pines in Petyayarvi, north from Saint Petersburg, Russia, October 19, 2025
 Brittlestem mushrooms Psathyrella prona(?) taken from roadside near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017
 Brittlestem mushrooms Psathyrella obtusata(?) taken from roadside near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017
 Spores of mushrooms Multiclavula corynoides collected earlier 10/5/2025 in a shallow depression covered by sand, near Petyayarvi train stop, north from Saint Petersburg, Russia, October 19, 2025
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) on a tree stump in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 20, 2016
 Fungus (basidiolichen) Multiclavula corynoides in a shallow depression covered by sand, s-w from Petyayarvi train stop, near train tracks. Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Pale brittlestem mushrooms (Psathyrella candolleana) on roadside near Dibuny, north-west from Saint Petersburg. Russia, August 28, 2017
 Small brittlestem mushrooms Psathyrella prona(?) taken from roadside near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017
 Basidiolichen (a mushroom that is also a lichen) Multiclavula corynoides in a shallow depression covered by sand, s-w from Petyayarvi train stop, near train tracks. Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Red edge brittlestem mushrooms (Psathyrella corrugis) on a forest trail in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, October 6, 2025
 Brittlestem (Psathyrella) mushrooms in a roadside ditch on Lenin Trail near Dibuny, north-west from Saint Petersburg, Russia, August 15, 2018
 Close up of small brittlestem mushrooms Psathyrella prona(?) taken from roadside near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017
 Brittlestem mushrooms (Psathyrella) on roadside mulch on Lenin Trail near Dibuny, north-west from Saint Petersburg, Russia, August 15, 2018
 Brittlestem mushrooms (Psathyrella obtusata)(?) on roadside near Kavgolovskoe Lake in area of Toksovo, north from Saint Petersburg, Russia, June 16, 2017
 Brittlestem mushrooms (Psathyrella obtusata)(?) on roadside near Kavgolovskoe Lake, between Oselki and Toksovo, north from Saint Petersburg. Russia, June 28, 2017
 Brittlestem (Psathyrella) mushrooms among charcoal in a roadside ditch on Lenin Trail near Dibuny, north-west from Saint Petersburg, Russia, August 15, 2018
 Masses of pale creamy-white bodies of fungus Multiclavula corynoides in a shallow depression covered by sand, s-w from Petyayarvi train stop, near train tracks. Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Webcap mushrooms Cortinarius depressus(?) under pines in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Brown webcap (Cortinarius) mushrooms under pines in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Red-banded webcap mushrooms (Cortinarius armillatus)(?) in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Light-violet webcap (Cortinarius) mushrooms in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 False deathcap mushrooms (Amanita citrina) in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Booted knight mushrooms (Tricholoma focale) in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Yellowleg bonnet mushrooms (Mycena epipterygia) in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Cinnabar bracket mushrooms (Pycnoporus cinnabarinus) in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Tacked milkcap mushrooms (Lactarius trivialis) in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Close-up of gills and a base of a stem of brittlestem mushrooms (Psathyrella corrugis) on a forest trail in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, October 6, 2025
 White, slender, fragile stems of brittlestem mushrooms Psathyrella corrugis on a forest trail in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, October 6, 2025
 Spring brittlestem mushrooms (Psathyrella spadiceogrisea) on roadside near Lenin Trail in area of Razliv near Dibuny, north-west from Saint Petersburg, Russia, May 21, 2019
 Section of tacked milkcap mushrooms (Lactarius trivialis) in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Soapy knight mushrooms (Tricholoma saponaceum) under pines in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Brick-brown powdercap mushrooms (Cystoderma granulosa) in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Mature Northern honey mushrooms (Armillaria borealis) in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Greyish-brown gills with a pale edge (fimbriate) of brittlestem mushrooms (Psathyrella corrugis) on a forest trail in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, October 6, 2025
 Light-brown webcap (Cortinarius) mushrooms under spruce in moss in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Dense group of webcap mushrooms Cortinarius depressus(?) under pines in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Dark-brown webcap (Cortinarius) mushrooms under spruce in moss in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Peat burrow near a road with of Roothole rosette mushrooms (Stereopsis vitellina) mushrooms in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Small, club-shaped (clavarioid), pale creamy-white bodies of fungus (basidiolichen) Multiclavula corynoides in a shallow depression covered by sand, s-w from Petyayarvi train stop, near train tracks. Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Top view of small, club-shaped (clavarioid), pale creamy-white bodies of fungus (basidiolichen) Multiclavula corynoides in a shallow depression covered by sand, s-w from Petyayarvi train stop, near train tracks. Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Roothole rosette mushrooms (Stereopsis vitellina) mushrooms extracted from peat walls of a burrow near a road under pines in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Brittlestem mushrooms Psathyrella obtusata on roadside in area of Dibuny - Pesochny, near Saint Petersburg. Russia, June 3, 2017
 Brittlestem (Psathyrella) mushrooms on roadside in West Kotlin Nature Reserve in Kronstadt. Saint Petersburg, Russia, September 2, 2018
 Brittlestem mushrooms Psathyrella obtusata(?) on roadside near Kavgolovskoe Lake in Toksovo, suburb of Saint Petersburg. Russia, June 10, 2017
 Caps of brittlestem mushrooms Psathyrella obtusata on roadside in area of Dibuny - Pesochny, near Saint Petersburg. Russia, June 3, 2017
 Resinous polypore mushroom (Ischnoderma resinosum) in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) on a tree stump in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, September 24, 2016
 Underside of resinous polypore mushroom (Ischnoderma resinosum) in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Brittlestem (Psathyrella) mushrooms near Orekhovo, 45 miles north from Saint Petersburg. Russia, August 30, 2018
 Pale brittlestem (Psathyrella candolleana) taken from roadside near Kavgolovskoe Lake in Toksovo, suburb of Saint Petersburg. Russia, June 10, 2017
 Flattened, spoon-shaped or fan-like fruit bodies with a bright egg-yellow to creamy-yellow color of Roothole rosette mushrooms (Stereopsis vitellina) mushrooms extracted from peat walls of a burrow near a road under pines in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, October 11, 2016
 Common bonnet mushrooms (Mycena galericulata) on a stump in Sosnovka Park. Saint Petersburg, Russia, September 20, 2025
 Close-up of flattened, spoon-shaped or fan-like fruit bodies with a bright egg-yellow to creamy-yellow color of Roothole rosette mushrooms (Stereopsis vitellina) mushrooms extracted from peat walls of a burrow near a road under pines in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Cluster of chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, October 11, 2016
 Brittlestem mushrooms Psathyrella corrugis(?) on mulch near railroad in Lembolovo, north from Saint Petersburg. Russia, September 20, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) in Lembolovo, 35 miles north from Saint Petersburg. Russia, August 8, 2017
 Mature common bonnet mushrooms (Mycena galericulata) on a stump in Sosnovka Park. Saint Petersburg, Russia, September 20, 2025
 Common bonnet mushrooms (Mycena galericulata) on a mossy stump in Sosnovka Park. Saint Petersburg, Russia, September 20, 2025
 Common eyelash mushrooms (Scutellinia scutellata) near a lake Kannelyarvi, north from Saint Petersburg, Russia, October 1, 2025
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) on a base of a tree in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, October 11, 2016
 Spillway of a Finnish hydroelectric power plant on the Volchya River (formerly Saijanjoki), located near the village of Peta"ja"rvi (now Petrovskoye) in the Leningrad Region. Petyayarvi north from Saint Petersburg, Russia, October 5, 2025
 Brittlestem mushrooms (Psathyrella obtusata)(?) near Kavgolovskoe Lake in area of Toksovo, north from Saint Petersburg, Russia, June 16, 2017
 Clustered brittlestem mushrooms (Psathyrella multipedata)(?) in a ditch near Dibuny, north-west from Saint Petersburg, Russia, June 14, 2017
 Brittlestem mushrooms (Psathyrella obtusata)(?) near Kavgolovskoe Lake in area of Toksovo, north from Saint Petersburg, Russia, June 16, 2017
 Pale brittlestem (Psathyrella candolleana) mushrooms near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 24, 2016
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea)(?) near Lembolovo, north from Saint Petersburg. Russia, August 24, 2018
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea)(?) near Dibuny, north-west from Saint Petersburg, Russia, September 3, 2018
 Pale brittlestem mushrooms (Psathyrella candolleana) near Lenin Trail in area of Razliv, north-west from Saint Petersburg, Russia, May 21, 2019
 Small brittlestem mushrooms (Psathyrella obtusata)(?) near Kavgolovskoe Lake in area of Toksovo, north from Saint Petersburg, Russia, June 16, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana)(?) on rotten wood east from Kuzmolovo, north from Saint Petersburg. Russia, June 8, 2014
 Common bonnet mushrooms (Mycena galericulata) and Scleroderma citrina on a mossy stump in Sosnovka Park. Saint Petersburg, Russia, September 20, 2025
 Brittlestem mushrooms Psathyrella pennata on the site of campfire near Kavgolovskoe Lake, between Oselki and Toksovo, north from Saint Petersburg. Russia, June 28, 2017
 Masses of tall brittlestem mushrooms Psathyrella longipes(?) in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, June 1, 2019
 Spring brittlestem mushrooms (Psathyrella spadiceogrisea) near Lenin Trail in area of Razliv near Dibuny, north-west from Saint Petersburg, Russia, May 21, 2019
 Pale brittlestem mushrooms (Psathyrella candolleana) on black background near Lenin Trail in area of Razliv, north-west from Saint Petersburg, Russia, May 21, 2019
 Inkcap mushroom Coprinellus angulatus(?) and small brittlestem mushrooms Psathyrella prona(?) near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017
 Brittlestem mushrooms Psathyrella pennata on the site of fire in spruce forest near Kavgolovskoe Lake, between Oselki and Toksovo, north from Saint Petersburg. Russia, June 28, 2017
 Lebyazhye Lake (also known as Swan Lake) during the autumn season given the golden hues of the deciduous trees mixed with the evergreen pines at Vyaryamyanselka Ridge eco-trail in Petyayarvi, north from Saint Petersburg, Russia, October 5, 2025
 Tall brittlestem mushrooms Psathyrella longipes(?) growing in large number near a road in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, June 1, 2019
 Bonfire scalycap mushrooms (Pholiota highlandensis) with a pair of brittlestem mushrooms Psathyrella pennata in foreground on a site of old fire in a spruce forest near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 14, 2017
 Spring brittlestem mushrooms (Psathyrella spadiceogrisea) in Sablino, south from Saint Petersburg. Russia, May 25, 2017
 Spring brittlestem mushrooms Psathyrella spadiceogrisea from Sosnovka Park. Saint Petersburg, Russia, May 27, 2017
 Chestnut brittlestem mushrooms (Homophron spadiceum) on a mossy stump near Dibuny, north-west from Saint Petersburg. Russia, August 20, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) near Lisiy Nos, west from Saint Petersburg. Russia, July 27, 2017
 Early spring brittlestem mushrooms Psathyrella spadiceogrisea in Sosnovka Park. Saint Petersburg, Russia, May 27, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) in Lisiy Nos, west from Saint Petersburg. Russia, July 2, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) in Gardens of Polytechnic Institute. Saint Petersburg, Russia, August 19, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) taken from Posiolok near Vyritsa, south from Saint Petersburg, Russia, July 9, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) in Lisiy Nos, 5 miles west from Saint Petersburg. Russia, August 5, 2016
 Spring brittlestem mushrooms (Psathyrella spadiceogrisea)(?) at Road 41K-064 south from Mys Moryin Nos, east from Saint Petersburg. Russia, May 26, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) in a yard near residential buildings in Saint Petersburg. Russia, August 11, 2024
 Close up of brittlestem mushrooms Psathyrella obtusata in area of Dibuny - Pesochny, near Saint Petersburg. Russia, June 3, 2017
 Common bonnet mushrooms (Mycena galericulata) on a stump in Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
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