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Fungi: Basidiomycota: Agaricomycetes: Boletales: Paxillaceae: Paxillus involutus (Batsch) Fr., 1838

Paxillus involutus – Brown rollrim

Synonyms: Agaricus adscendibus, Agaricus contiguus, Agaricus involutus, Omphalia involuta, Rhymovis involuta.

Common name: brown rollrim.

Russian names: Svinushka tonkaya, Korovnik, Kobylka, Svinukh, Svinar, Svinoroy, Svinukha, Svinoe ukho.

Extract from Wikipedia article: Paxillus involutus, commonly known as the brown roll-rim, common roll-rim, or poison pax, is a basidiomycete fungus widely distributed across the Northern Hemisphere. It has been unintentionally introduced to Australia, New Zealand, and South America, where it has likely been transported in soil with European trees. Various shades of brown in colour, the fruit body grows up to 6 cm (2.4 in) high and has a funnel-shaped cap up to 12 cm (5 in) wide with a distinctive inrolled rim and decurrent gills that may be pore-like close to the stipe. Although it has gills, it is more closely related to the pored boletes than to typical gilled mushrooms. It was first described by Pierre Bulliard in 1785, and was given its current binomial name by Elias Magnus Fries in 1838. Genetic testing suggests that Paxillus involutus may be a species complex rather than a single species.

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

Brown roll-rim mushroom (<B>Paxillus involutus</B>, Russian name Svinushka) in a forest around Kavgolovskoe Lake, near Saint Petersburg. Russia, <A HREF="../date-en/2013-09-06.htm">September 6, 2013</A>
LinkBrown roll-rim mushroom (Paxillus involutus, Russian name Svinushka) in a forest around Kavgolovskoe Lake, near Saint Petersburg. Russia, September 6, 2013
Location on mapsЛенинградская область, Всеволожский район
Brown roll-rim mushroom (<B>Paxillus involutus</B>, Russian name Svinushka) in Okhtinsky Park in Toksovo, 8 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2013-09-13.htm">September 13, 2013</A>
LinkBrown roll-rim mushroom (Paxillus involutus, Russian name Svinushka) in Okhtinsky Park in Toksovo, 8 miles north from Saint Petersburg. Russia, September 13, 2013
Location on mapsЛенинградская область, Всеволожский район
Brown roll-rim mushroom (<B>Paxillus involutus</B>, Russian name Svinushka) in Okhtinsky Park in Toksovo, 8 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2013-09-13.htm">September 13, 2013</A>
LinkBrown roll-rim mushroom (Paxillus involutus, Russian name Svinushka) in Okhtinsky Park in Toksovo, 8 miles north from Saint Petersburg. Russia, September 13, 2013
Location on mapsЛенинградская область, Всеволожский район
Brown roll-rim mushroom (<B>Paxillus involutus</B>, Russian name Svinushka) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2016-07-24.htm">July 24, 2016</A>
LinkBrown roll-rim mushroom (Paxillus involutus, Russian name Svinushka) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 24, 2016
Location on mapsЛенинградская область, Всеволожский район, Токсовское городское поселение

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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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