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Fungi: Basidiomycota: Agaricomycetes: Agaricales: Cortinariaceae: Cortinarius crassus Fr., 1838

Cortinarius crassus – Stout webcap

Synonyms: Cortinarius pseudocrassus, Phlegmacium crassum.

Common name: stout webcap.

Russian name: Pautinnik tolsto-myasistyy.

AI-generated description

Cortinarius crassus is a species of fungus that belongs to the family Cortinariaceae. It has a stout habit, with a cap that ranges from 3-8 cm in diameter, often umbilicate, and is brown to reddish-brown in color. The stipe is typically thick and stout, measuring 4-7 cm tall and 1-2.5 cm wide. In St. Petersburg, Leningrad Oblast, and north-western Russia, Cortinarius crassus has been found growing in coniferous forests, particularly under spruce and pine trees, often in mossy or damp areas. Fruitings typically occur from late summer to early autumn, with a peak in September. The species is considered rare to occasional in the region, but can be locally abundant in suitable habitats.

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

Fleshy webcap mushrooms <B>Cortinarius crassus</B> on roadside in a pine forest in Petiayarvi, 50 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2017-08-30.htm">August 30, 2017</A>
LinkFleshy webcap mushrooms Cortinarius crassus on roadside in a pine forest in Petiayarvi, 50 miles north from Saint Petersburg. Russia, August 30, 2017
Location on mapsUnnamed Road, Leningradskaya oblast', Russia, 188732

AI-generated summary of observations

Fleshy webcap mushrooms Cortinarius crassus were observed growing on the roadside in a pine forest in Petiayarvi, Leningrad Oblast, approximately 50 miles north of Saint Petersburg, Russia. The observation took place on August 30, 2017. This location suggests that Cortinarius crassus can thrive in areas with coniferous trees and disturbed soil, such as roadsides. The species was found to be fruiting during late summer, indicating a potential preference for warmer temperatures and adequate moisture. Further observations in north-western Russia may reveal more about the habitat preferences and distribution of Cortinarius crassus in this region. The presence of this fungus in Leningrad Oblast highlights the diversity of fungal species in the area and encourages further research into the mycological characteristics of the region. Additional studies could provide insight into the ecological role of Cortinarius crassus.

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Links

Acknowledgements

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

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