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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 inadvertently introduced to Australia, New Zealand, South Africa, and South America, probably 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
Brown rollrim mushrooms (<B>Paxillus involutus</B>) near Kavgolovskoe Lake, between Oselki and Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-06-28.htm">June 28, 2017</A>
LinkBrown rollrim mushrooms (Paxillus involutus) near Kavgolovskoe Lake, between Oselki and Toksovo, north from Saint Petersburg. Russia, June 28, 2017
Location on mapsЛенинградская область, Всеволожский район, Токсовское городское поселение
Brown rollrim mushrooms (<B>Paxillus involutus</B>) along a road around Kavgolovskoe Lake near Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-25.htm">July 25, 2017</A>
LinkBrown rollrim mushrooms (Paxillus involutus) along a road around Kavgolovskoe Lake near Toksovo, north from Saint Petersburg. Russia, July 25, 2017
Location on mapsЛенинградская область, Всеволожский район, Токсовское городское поселение
Brown rollrim mushrooms (<B>Paxillus involutus</B>) in a spruce forest near Lembolovo, 40 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2017-09-09.htm">September 9, 2017</A>
LinkBrown rollrim mushrooms (Paxillus involutus) in a spruce forest near Lembolovo, 40 miles north from Saint Petersburg. Russia, September 9, 2017
Location on mapsЛенинградская область, Всеволожский район, Куйвозовское сельское поселение
Old brown rollrim mushrooms (<B>Paxillus involutus</B>) infected by bolete eater fungus Hypomyces chrysospermus in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, <A HREF="../date-en/2017-09-14.htm">September 14, 2017</A>
LinkOld brown rollrim mushrooms (Paxillus involutus) infected by bolete eater fungus Hypomyces chrysospermus in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, September 14, 2017
Location on mapsСанкт-Петербург, Пушкинский район, Павловск
Bolete mold fungus (Hypomyces chrysospermus) on brown rollrim mushrooms (<B>Paxillus involutus</B>) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, <A HREF="../date-en/2017-09-27.htm">September 27, 2017</A>
LinkBolete mold fungus (Hypomyces chrysospermus) on brown rollrim mushrooms (Paxillus involutus) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, September 27, 2017
Location on mapsСанкт-Петербург, Пушкинский район, Павловск

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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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