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Fungi: Basidiomycota: Agaricomycetes: Agaricales: Cortinariaceae: Cortinarius collinitus (Sowerby) Gray, 1821

Cortinarius collinitus – Blue-girdled webcap

Synonyms: Agaricus collinitus, Cortinarius muscigenus, Cortinarius trivialis, Myxacium collinitum.

Common name: blue-girdled webcap.

Russian names: Pautinnik pachkaiushchiy, Pautinnik golubostvolnyy, Pautinnik pryamoy, Pautinnik smazannyy.

Extract from Wikipedia article: Cortinarius collinitus is a species of fungi in the family Cortinariaceae.

AI-generated description

Cortinarius collinitus is a small to medium-sized agaric fungus with a bell-shaped to convex cap that is 1-4 cm in diameter, reddish-brown to clay-colored, and often has a slightly wrinkled or veined appearance. The gills are adnate to emarginate, moderately spaced, and rust-brown to cinnamon-colored. The stipe is slender, 2-6 cm long, and 0.2-0.5 cm thick, with a fibrillose surface. In St. Petersburg, Leningrad Oblast, and north-western Russia, Cortinarius collinitus typically grows in coniferous and mixed forests, often associated with spruce, pine, or birch trees, from late summer to early autumn. It is considered a relatively rare species in the region.

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

Webcap mushroom Cortinarius stillatitius or may be <B>Cortinarius collinitus</B> near Orekhovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2016-08-13.htm">August 13, 2016</A>
LinkWebcap mushroom Cortinarius stillatitius or may be Cortinarius collinitus near Orekhovo, north from Saint Petersburg. Russia, August 13, 2016
Location on mapsUnnamed Road, Leningradskaya oblast', Russia
Webcap mushrooms <B>Cortinarius collinitus</B> or may be C. mucosus near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2016-08-15.htm">August 15, 2016</A>
LinkWebcap mushrooms Cortinarius collinitus or may be C. mucosus near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, August 15, 2016
Location on mapsNovyy per., Kavgolovo, Leningradskaya oblast', Russia, 188667
Webcap mushrooms <B>Cortinarius collinitus</B> or may be C. mucosus in Orekhovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2016-08-17.htm">August 17, 2016</A>
LinkWebcap mushrooms Cortinarius collinitus or may be C. mucosus in Orekhovo, north from Saint Petersburg. Russia, August 17, 2016
Location on mapsUnnamed Road, Vaskelovo, Leningradskaya oblast', Russia, 188731
Webcap mushrooms <B>Cortinarius collinitus</B>(?) in Orekhovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2016-08-17.htm">August 17, 2016</A>
LinkWebcap mushrooms Cortinarius collinitus(?) in Orekhovo, north from Saint Petersburg. Russia, August 17, 2016
Location on mapsUnnamed Road, Vaskelovo, Leningradskaya oblast', Russia, 188731
Webcap mushroom <B>Cortinarius collinitus</B> or may be C. stillatitius near Dibuny, north-west from Saint Petersburg, Russia, <A HREF="../date-en/2016-08-24.htm">August 24, 2016</A>
LinkWebcap mushroom Cortinarius collinitus or may be C. stillatitius near Dibuny, north-west from Saint Petersburg, Russia, August 24, 2016
Webcap mushrooms <B>Cortinarius collinitus</B> near Orekhovo, 40 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2016-09-09.htm">September 9, 2016</A>
LinkWebcap mushrooms Cortinarius collinitus near Orekhovo, 40 miles north from Saint Petersburg. Russia, September 9, 2016
Blue-girdled webcap mushroom (<B>Cortinarius collinitus</B>) on a slope of Istok Lake in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2017-08-11.htm">August 11, 2017</A>
LinkBlue-girdled webcap mushroom (Cortinarius collinitus) on a slope of Istok Lake in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 11, 2017
Location on mapsUnnamed Road, Kannelyarvi, Leningradskaya oblast', Russia, 188850
Blue-girdled webcap mushrooms (<B>Cortinarius collinitus</B>) near Shchuchye Lake in Komarovo, west from Saint Petersburg. Russia, <A HREF="../date-en/2017-09-06.htm">September 6, 2017</A>
LinkBlue-girdled webcap mushrooms (Cortinarius collinitus) near Shchuchye Lake in Komarovo, west from Saint Petersburg. Russia, September 6, 2017
Location on mapsOzornaya Ulitsa, 45, Russia, 197733

AI-generated summary of observations

Observations of Cortinarius collinitus were made in Leningrad Oblast and north-western Russia on several occasions. The fungus was found near Orekhovo, north of Saint Petersburg, on August 13, 15, and 17, 2016, with some specimens resembling C. mucosus or C. stillatitius. Additional sightings occurred near Kavgolovskoe Lake in Toksovo, Dibuny, and Shchuchye Lake in Komarovo, west of Saint Petersburg. The fungus was also spotted on a slope of Istok Lake in Kannelyarvi, 45 miles north of Saint Petersburg, on August 11, 2017. Another observation was made near Orekhovo on September 9, 2016, and near Shchuchye Lake on September 6, 2017. The sightings suggest that Cortinarius collinitus is present in the region, often in association with other similar species. The observations were made during the summer and early fall months, indicating a possible seasonal pattern.

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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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