 Brittlestem mushrooms Psathyrella clivensis(?) at the bottom of Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Orange and red clay layers in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Green and red clay layers in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Multicolored clay layers in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Alternate-leaved Golden Saxifrage (Chrysosplenium alternifolium, Russian name Selezionochnik) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Flowers of marsh marigold (kingcup, Caltha palustris, Russian name Kaluzhnitsa) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Close up of Alternate-leaved Golden Saxifrage (Chrysosplenium alternifolium, Russian name Selezionochnik) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Back lit Alternate-leaved Golden Saxifrage (Chrysosplenium alternifolium, Russian name Selezionochnik) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Black hoverfly Cheilosia on a yellow flower of Lesser celandine (Ranunculus ficaria, Russian name Chistyak) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Yellow flower of marsh marigold (kingcup, Caltha palustris, Russian name Kaluzhnitsa) with a black hoverfly Cheilosia in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Black hoverfly Cheilosia on a yellow flower of marsh marigold (kingcup, Caltha palustris, Russian name Kaluzhnitsa) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Valley of Popovka River near Grafskaya Road in area of Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 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) south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 Spring brittlestem mushrooms (Psathyrella spadiceogrisea) on Krasnogo Bugra Alley in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 24, 2017
 Spring brittlestem mushrooms (Psathyrella spadiceogrisea) at Road 41K-064 south from Mys Moryin Nos near Ladoga Lake, east from Saint Petersburg. Russia, May 14, 2019
 Spring brittlestem mushrooms (Psathyrella spadiceogrisea) in a ditch on Krasnogo Bugra Alley in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 24, 2017
 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
 Close up of spring brittlestem mushroom (Psathyrella spadiceogrisea) on Krasnogo Bugra Alley in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 24, 2017
 Dissected spring brittlestem mushroom (Psathyrella spadiceogrisea) on Krasnogo Bugra Alley in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 24, 2017
 Brown and pale buff-brown caps of brittlestem mushrooms Psathyrella corrugis on wood chips in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, September 12, 2017
 Pale brittlestem (Psathyrella candolleana) found in a ditch on Krasnogo Solntsa Alley in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, June 6, 2017
 Spring brittlestem mushrooms (Psathyrella spadiceogrisea) in Sablino, south from Saint Petersburg. Russia, May 25, 2017
 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) taken from Posiolok near Vyritsa, south from Saint Petersburg, Russia, July 9, 2017
 Cluster of brown brittlestem mushrooms Psathyrella cernua (Homophron cernuum)(?) on the central alley in Park of Polytechnic Institute. Saint Petersburg, Russia, September 19, 2017
 Group of brown brittlestem mushrooms Psathyrella cernua (Homophron cernuum)(?) on the central alley in Park of Polytechnic Institute. Saint Petersburg, Russia, September 19, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) near Lenin Trail in area of Razliv, north-west from Saint Petersburg, Russia, May 21, 2019
 Spring brittlestem mushrooms (Psathyrella spadiceogrisea) near Lenin Trail in area of Razliv near Dibuny, north-west from Saint Petersburg, Russia, May 21, 2019
 Brittlestem mushroom (Psathyrella) near Lisiy Nos, south from Saint Petersburg. Russia, August 17, 2018
 Pale brittlestem mushrooms (Psathyrella candolleana) on black background near Lenin Trail in area of Razliv, north-west from Saint Petersburg, Russia, May 21, 2019
 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
 Spores of orange and brown brittlestem mushrooms (Psathyrella) (spore print brown) collected in Sam Houston National Forest. Texas, September 3, 2022
 Spring brittlestem mushrooms Psathyrella spadiceogrisea from Sosnovka Park. Saint Petersburg, Russia, May 27, 2017
 Brittlestem (Psathyrella) mushrooms near Orekhovo, 45 miles north from Saint Petersburg. Russia, August 30, 2018
 Pale brittlestem mushrooms (Psathyrella candolleana) near Lisiy Nos, west from Saint Petersburg. Russia, July 27, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) in Lisiy Nos, west from Saint Petersburg. Russia, July 2, 2017
 Early spring brittlestem mushrooms Psathyrella spadiceogrisea in Sosnovka Park. Saint Petersburg, Russia, May 27, 2017
 Brittlestem mushrooms Psathyrella corrugis(?) on mulch near railroad in Lembolovo, north from Saint Petersburg. Russia, September 20, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) in Lisiy Nos, 5 miles west from Saint Petersburg. Russia, August 5, 2016
 Brittlestem mushrooms Psathyrella prona(?) taken from roadside near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) in Lembolovo, 35 miles north from Saint Petersburg. Russia, August 8, 2017
 Close up of brittlestem mushrooms Psathyrella obtusata in area of Dibuny - Pesochny, near Saint Petersburg. Russia, June 3, 2017
 Brittlestem mushrooms Psathyrella obtusata on roadside in area of Dibuny - Pesochny, near Saint Petersburg. Russia, June 3, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) in a yard near residential buildings in Saint Petersburg. Russia, August 11, 2024
 Brittlestem mushrooms Psathyrella obtusata(?) taken from roadside near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) in Gardens of Polytechnic Institute. Saint Petersburg, Russia, August 19, 2017
 Caps of brittlestem mushrooms Psathyrella obtusata on roadside in area of Dibuny - Pesochny, near Saint Petersburg. Russia, June 3, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) on a mossy log in Lisiy Nos, 5 miles west from Saint Petersburg. Russia, August 5, 2016
 Brittlestem (Psathyrella) mushrooms on roadside in West Kotlin Nature Reserve in Kronstadt. Saint Petersburg, Russia, September 2, 2018
 Clustered brittlestem mushrooms (Psathyrella multipedata)(?) in a ditch near Dibuny, north-west from Saint Petersburg, Russia, June 14, 2017
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea)(?) near Lembolovo, north from Saint Petersburg. Russia, August 24, 2018
 Small brittlestem mushrooms Psathyrella prona(?) taken from roadside near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) on roadside near Dibuny, north-west from Saint Petersburg. Russia, August 28, 2017
 Pale brittlestem (Psathyrella candolleana) mushrooms near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 24, 2016
 Brittlestem mushrooms (Psathyrella obtusata)(?) near Kavgolovskoe Lake in area of Toksovo, north from Saint Petersburg, Russia, June 16, 2017
 Brittlestem mushrooms (Psathyrella obtusata)(?) near Kavgolovskoe Lake in area of Toksovo, north from Saint Petersburg, Russia, June 16, 2017
 Brittlestem mushrooms Psathyrella obtusata(?) on roadside near Kavgolovskoe Lake in Toksovo, suburb of Saint Petersburg. Russia, June 10, 2017
 Brittlestem mushrooms (Psathyrella obtusata)(?) on roadside near Kavgolovskoe Lake in area of Toksovo, north from Saint Petersburg, Russia, June 16, 2017
 Brittlestem mushrooms (Psathyrella) on roadside mulch on Lenin Trail near Dibuny, north-west from Saint Petersburg, Russia, August 15, 2018
 Small brittlestem mushrooms (Psathyrella obtusata)(?) near Kavgolovskoe Lake in area of Toksovo, north from Saint Petersburg, Russia, June 16, 2017
 Brittlestem (Psathyrella) mushrooms in a roadside ditch on Lenin Trail near Dibuny, north-west from Saint Petersburg, Russia, August 15, 2018
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, October 11, 2016
 Pale brittlestem mushrooms (Psathyrella candolleana) on a fallen tree in Lisiy Nos, 5 miles west from Saint Petersburg. Russia, August 5, 2016
 Brittlestem mushrooms Psathyrella corrugis on mulch in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, September 12, 2017
 Close up of small brittlestem mushrooms Psathyrella prona(?) taken from roadside near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017
 Spring brittlestem mushrooms (Psathyrella spadiceogrisea) on wood chips near Tarkhovka train stop, west from Saint Petersburg. Russia, May 10, 2021
 Pale brittlestem mushrooms (Psathyrella candolleana)(?) on rotten wood east from Kuzmolovo, north from Saint Petersburg. Russia, June 8, 2014
 Brittlestem mushrooms (Psathyrella obtusata)(?) on roadside near Kavgolovskoe Lake, between Oselki and Toksovo, north from Saint Petersburg. Russia, June 28, 2017
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea)(?) near Dibuny, north-west from Saint Petersburg, Russia, September 3, 2018
 Canyon of Tosna River near Sablino, south from Saint Petersburg. Russia, May 21, 2011
 An oak near Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Valley of Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Oak tree near Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Valley of Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Pale brittlestem mushrooms (Psathyrella candolleana) on mulch near Tarkhovka train stop near Sestroretsk, west from Saint Petersburg. Russia, August 27, 2018
 Cluster of chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, October 11, 2016
 Common stump brittlestem mushrooms (Psathyrella piluliformis)(?) on a forest cutting in Dibuny, north-west from Saint Petersburg. Russia, September 18, 2017
 Brittlestem mushrooms Psathyrella corrugis on mulch, on a lawn in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, September 12, 2017
 Brittlestem (Psathyrella) mushrooms among charcoal in a roadside ditch on Lenin Trail near Dibuny, north-west from Saint Petersburg, Russia, August 15, 2018
 Brittlestem mushrooms Psathyrella pennata on the site of campfire near Kavgolovskoe Lake, between Oselki and Toksovo, north from Saint Petersburg. Russia, June 28, 2017
 Young brittlestem mushrooms Psathyrella corrugis on a lawn in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, September 12, 2017
 Brittlestem mushrooms Psathyrella corrugis on wood chips in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, September 12, 2017
 Slavianka River near Black Bridge in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 End of World Pillar from Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Viskontiev Bridge and Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Oak tree in Valley of Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Valley of Slavianka River near Pilbashenny Bridge in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Slavianka River near Novaya Sylvia Bridge in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Krasnaya Dolina (Red Valley) near Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) on a base of a tree in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, October 11, 2016
 Common stump brittlestem mushrooms (Psathyrella piluliformis)(?) on mulch on a forest cutting near Dibuny, north-west from Saint Petersburg. Russia, September 18, 2017
 Fading caps of brittlestem mushrooms Psathyrella corrugis on a lawn in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, September 12, 2017
 Spring brittlestem mushrooms (Psathyrella spadiceogrisea) on remains of cut bushes and small trees near Tarkhovka train stop, west from Saint Petersburg. Russia, May 10, 2021
 Underside of spring brittlestem mushrooms (Psathyrella spadiceogrisea) on wood chips from cut bushes near Tarkhovka train stop, west from Saint Petersburg. Russia, May 10, 2021
 Inkcap mushroom Coprinellus angulatus(?) and small brittlestem mushrooms Psathyrella prona(?) near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017
 Valley of Slavianka River near Novaya Sylvia Bridge in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 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
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