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Strobilurus stephanocystis – Russian conecap

Synonyms: Agaricus conigenus, Agaricus stolonifer, Collybia stephanocystis, Marasmius conigenus, Marasmius esculentus, Pseudohiatula stephanocystis.

Common name: Russian conecap.

Russian names: Strobiliurus shpagatonogiy, Strobiliurus venechnotsistidnyy, Strobiliurus golovchatotsistidnyy.

AI-generated description

Strobilurus stephanocystis is a species of fungus that grows on conifer cones, particularly spruce. In St. Petersburg, Leningrad Oblast, and north-western Russia, it has been found to fruit in late summer to early autumn, typically on fallen cones of Norway spruce. The fungus produces small, bell-shaped caps that are yellow-brown to dark brown in color, with a distinctive cystidium-covered stipe. It is considered a rare species in the region, but can be locally common in areas with abundant spruce cone substrate.

Photos of this mushroom from the area of St. Petersburg, Russia

Pine-cone mushroom (Strobilurus stephanocystis) in Sosnovka Park. Saint Petersburg, Russia, May 11, 2017
Unnamed Road, Sankt-Peterburg, Russia

Close up of a cap of pine-cone mushroom (Strobilurus stephanocystis) in Sosnovka Park. Saint Petersburg, Russia, May 11, 2017
Unnamed Road, Sankt-Peterburg, Russia

Pine-cone mushrooms (Strobilurus stephanocystis) in area of former swamp in Sosnovka Park. Saint Petersburg, Russia, May 11, 2017
Unnamed Road, Sankt-Peterburg, Russia

Pine-cone mushrooms (Strobilurus stephanocystis) from area of former swamp in Sosnovka Park. Saint Petersburg, Russia, May 11, 2017
Unnamed Road, Sankt-Peterburg, Russia

Close up of pine-cone mushrooms (Strobilurus stephanocystis) from area of former swamp in Sosnovka Park. Saint Petersburg, Russia, May 11, 2017
pr. Raevskogo, 22, Sankt-Peterburg, Russia, 194064

Pine-cone mushrooms (Strobilurus stephanocystis) in Dibuny, near Saint Petersburg. Russia, May 18, 2017
Zapadniy Skorostnoy Diameter, Sankt-Peterburg, Russia, 197758

Pine-cone mushroom (Strobilurus stephanocystis) in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
Unnamed Road, Sankt-Peterburg, Russia

Pine-cone mushrooms Strobilurus stephanocystis on wood chips in Sosnovka Park. Saint Petersburg, Russia, May 27, 2017
Unnamed Road, Sankt-Peterburg, Russia

Pine-cone mushrooms (Strobilurus stephanocystis) in area of Dibuny - Pesochny, near Saint Petersburg. Russia, June 3, 2017
Zapadniy Skorostnoy Diameter, Sankt-Peterburg, Russia, 197758

Pine-cone mushroom (Strobilurus stephanocystis) on Lenin Trail in area of Razliv near Dibuny, north-west from Saint Petersburg, Russia, May 11, 2019
Leninskaya Tropa, Pesochny, Sankt-Peterburg, Russia

Pine-cone mushrooms (Strobilurus stephanocystis) on roadside of Lenin Trail in area of Razliv near Dibuny, north-west from Saint Petersburg, Russia, May 11, 2019
Leninskaya Tropa, Pesochny, Sankt-Peterburg, Russia

AI-generated summary of observations

Observations of Strobilurus stephanocystis in Leningrad Oblast and north-western Russia reveal that the fungus grows in various environments. In Sosnovka Park, it was found on former swamp areas, wood chips, and typical forest floors from May 11 to May 27, 2017. Similar growth patterns were observed in Dibuny and Pesochny areas near Saint Petersburg from May 18 to June 3, 2017. The fungus also thrived along Lenin Trail in Razliv area near Dibuny, with sightings on May 11, 2019. Close-up observations of the caps and growth habits were documented, showcasing the mushroom's characteristics. The fungus appears to be widespread in the region, growing in different substrates and areas, including parks, former swamps, and roadside trails.

Comments

• Search of mushroom species for given keywords "Strobilurus stephanocystis" was done through catalogueoflife.org.
• Attributes of the species were taken from catalogueoflife.org.

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Acknowledgements

Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.

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