Brown roll-rim mushroom (Paxillus involutus, Russian name Svinushka) in a forest around Kavgolovskoe Lake, near Saint Petersburg. Russia, September 6, 2013
Новый переулок, 5, Leningrad Oblast, RussiaSynonyms: 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 that is 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.
Paxillus involutus is a funnel-shaped to depressed fungal species with a brown to tan cap and decurrent gills. In St. Petersburg and the surrounding Leningrad Oblast, it fruits from July to November, typically in association with birch, spruce, and pine trees. It is widely distributed in north-western Russia, often found in coniferous and mixed forests, as well as urban parks and gardens. The species is considered edible, but can cause gastrointestinal upset in some individuals if not cooked properly.
Brown roll-rim mushroom (Paxillus involutus, Russian name Svinushka) in a forest around Kavgolovskoe Lake, near Saint Petersburg. Russia, September 6, 2013Новый переулок, 5, Leningrad Oblast, Russia
Brown roll-rim mushroom (Paxillus involutus, Russian name Svinushka) in Okhtinsky Park in Toksovo, 8 miles north from Saint Petersburg. Russia, September 13, 2013Tsentralnaya, 35А, Zelenye Kholmy, Leningrad Oblast, Russia, 188660
Brown roll-rim mushroom (Paxillus involutus, Russian name Svinushka) in Okhtinsky Park in Toksovo, 8 miles north from Saint Petersburg. Russia, September 13, 2013Glavnaya, 107, Syargi, Leningrad Oblast, Russia, 188660
Brown roll-rim mushroom (Paxillus involutus, Russian name Svinushka) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 24, 2016Unnamed Road, Leningradskaya oblast', Russia, 188664
Brown rollrim mushrooms (Paxillus involutus) near Kavgolovskoe Lake, between Oselki and Toksovo, north from Saint Petersburg. Russia, June 28, 2017Dachnaya ul., Leningradskaya oblast', Russia, 188664
Brown rollrim mushrooms (Paxillus involutus) along a road around Kavgolovskoe Lake near Toksovo, north from Saint Petersburg. Russia, July 25, 2017Unnamed Road, Leningradskaya oblast', Russia, 188664
Brown rollrim mushrooms (Paxillus involutus) in a spruce forest near Lembolovo, 40 miles north from Saint Petersburg. Russia, September 9, 2017Unnamed Road, Leningradskaya oblast', Russia, 188695
Old brown rollrim mushrooms (Paxillus involutus) infected by bolete eater fungus Hypomyces chrysospermus in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, September 14, 2017Kolonna "Konets Sveta", Okruzhnaya Alleya, Pavlovsk, Sankt-Peterburg, Russia, 196625
Bolete mold fungus (Hypomyces chrysospermus) on brown rollrim mushrooms (Paxillus involutus) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, September 27, 2017Lipetskaya Alleya, Pavlovsk, Sankt-Peterburg, Russia, 196625
Brown rollrim mushrooms (Paxillus involutus) on a lawn in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 23, 2024Кафе «Бульвар», Политехническая ул., 29, СПбГПУ, Saint Petersburg, 194064, RussiaObservations of Paxillus involutus in Leningrad Oblast and north-western Russia show that the fungus is commonly found in forests and parks around Saint Petersburg. It grows near Kavgolovskoe Lake, Okhtinsky Park, and other areas with spruce trees. The mushroom typically appears in summer and early fall, with sightings recorded from June to September. Some observations note the presence of Hypomyces chrysospermus, a fungus that infects Paxillus involutus, turning it into a mold-like state. The fungus has also been found growing on lawns, such as in the Gardens of Polytechnic Institute. Overall, Paxillus involutus appears to be widespread and relatively common in the region, with repeated sightings over several years. Its growth habits and interactions with other fungi have been documented in various locations around Saint Petersburg.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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