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Fungi: Basidiomycota: Agaricomycetes: Agaricales: Cortinariaceae: Cortinarius decipiens (Pers.) Fr., 1838

Cortinarius decipiens – Sepia webcap

Synonyms: Agaricus decipiens, Cortinarius atrocaeruleus, Cortinarius flexipes, Cortinarius sertipes, Hydrocybe atrocaerulea, Hydrocybe decipiens, Hydrocybe sertipes, Telamonia sertipes.

Common name: sepia webcap.

Russian name: Pautinnik obmanchivyy.

AI-generated description

Cortinarius decipiens is a species of fungus that belongs to the family Cortinariaceae. It has a brown cap and gills, and a slender stipe. In St. Petersburg, Leningrad Oblast, and north-western Russia, Cortinarius decipiens typically grows in coniferous and mixed forests, often associated with spruce and pine trees. Fruitings usually occur from late summer to early autumn, in moist areas with rich soil. The fungus is considered rare in the region, but can be found in protected areas and nature reserves, such as the Kivach Nature Reserve and the Vepsian forest reserve.

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

Sepia webcap mushrooms (<B>Cortinarius decipiens</B>)(?) near Lisiy Nos, south from Saint Petersburg. Russia, <A HREF="../date-en/2016-09-03.htm">September 3, 2016</A>
LinkSepia webcap mushrooms (Cortinarius decipiens)(?) near Lisiy Nos, south from Saint Petersburg. Russia, September 3, 2016
Location on mapsPrimorskoye sh., g. Sankt-Peterburg, Russia, 197755
Sepia webcap mushrooms (<B>Cortinarius decipiens</B>)(?) between Morskaya and Lisiy Nos, south from Saint Petersburg. Russia, <A HREF="../date-en/2016-09-03.htm">September 3, 2016</A>
LinkSepia webcap mushrooms (Cortinarius decipiens)(?) between Morskaya and Lisiy Nos, south from Saint Petersburg. Russia, September 3, 2016
Location on mapsPrimorskoye sh., g. Sankt-Peterburg, Russia, 197755
Sepia webcap mushrooms (<B>Cortinarius decipiens</B>) in Dibuny, near Saint Petersburg. Russia, <A HREF="../date-en/2017-08-20.htm">August 20, 2017</A>
LinkSepia webcap mushrooms (Cortinarius decipiens) in Dibuny, near Saint Petersburg. Russia, August 20, 2017
Location on mapsUnnamed Road, Sankt-Peterburg, Russia, 197758
Sepia webcap mushrooms (<B>Cortinarius decipiens</B>) in Blizhnie Dubki area near Lisiy Nos, west from Saint Petersburg. Russia, <A HREF="../date-en/2017-09-11.htm">September 11, 2017</A>
LinkSepia webcap mushrooms (Cortinarius decipiens) in Blizhnie Dubki area near Lisiy Nos, west from Saint Petersburg. Russia, September 11, 2017
Location on mapsPrimorskoye Shosse, Sankt-Peterburg, Russia, 197755
Sepia webcap mushrooms (<B>Cortinarius decipiens</B>)(?) near Lisiy Nos, west from Saint Petersburg. Russia, <A HREF="../date-en/2018-09-01.htm">September 1, 2018</A>
LinkSepia webcap mushrooms (Cortinarius decipiens)(?) near Lisiy Nos, west from Saint Petersburg. Russia, September 1, 2018
Location on mapsPrimorskoye Shosse, Sankt-Peterburg, Russia, 197755
Sepia webcap mushrooms (<B>Cortinarius decipiens</B>) near Dibuny, north-west from Saint Petersburg, Russia, <A HREF="../date-en/2018-09-03.htm">September 3, 2018</A>
LinkSepia webcap mushrooms (Cortinarius decipiens) near Dibuny, north-west from Saint Petersburg, Russia, September 3, 2018
Location on mapsLeninskaya Tropa, Pesochny, Sankt-Peterburg, Russia
Sepia webcap mushrooms (<B>Cortinarius decipiens</B>) in Lindulovskaya Larch Grove, near Roshchino, 30 miles north-west from Saint Petersburg. Russia, <A HREF="../date-en/2018-09-04.htm">September 4, 2018</A>
LinkSepia webcap mushrooms (Cortinarius decipiens) in Lindulovskaya Larch Grove, near Roshchino, 30 miles north-west from Saint Petersburg. Russia, September 4, 2018
Location on mapsLindulovskaya Doroga, Leningradskaya oblast', Russia, 197729

AI-generated summary of observations

Observations of Cortinarius decipiens in Leningrad Oblast and north-western Russia reveal a presence in various locations. The fungus was found near Lisiy Nos, south of Saint Petersburg, on September 3, 2016, and again between Morskaya and Lisiy Nos on the same day. In 2017, it was spotted in Dibuny, near Saint Petersburg, on August 20, and in Blizhnie Dubki area near Lisiy Nos on September 11. Further sightings occurred near Lisiy Nos on September 1, 2018, and near Dibuny on September 3, 2018. Additionally, the fungus was found in Lindulovskaya Larch Grove, near Roshchino, on September 4, 2018. These observations suggest that Cortinarius decipiens is present in the region, with multiple sightings over several years. The fungus appears to thrive in various areas, including groves and coastal regions, in late summer and early fall.

Comments

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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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