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Fungi: Basidiomycota: Agaricomycetes: Agaricales: Pluteaceae: Pluteus atromarginatus (Konrad) Kühner, 1935

Pluteus atromarginatus – Blackedged shield

Synonyms: Pluteus cervinus, Pluteus nigrofloccosus, Pluteus tricuspidatus, Pluteus umbrosus.

Common name: blackedged shield.

Russian names: Pliutey tiomnokrayniy, Pliutey chernookaymlionnyy.

AI-generated description

Pluteus atromarginatus is a species of fungus that belongs to the family Pluteaceae. It has a cap diameter of 3-8 cm, brown to dark brown in color with a velvety texture, and black margins. The gills are free, crowded, and pinkish-brown. In St. Petersburg, Leningrad Oblast, and north-western Russia, it is typically found growing on decaying wood, stumps, or sawdust, often in urban areas, from summer to autumn.

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

Black-edged Pluteus mushroom (<B>Pluteus atromarginatus</B>) in Lembolovo, 35 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2016-08-31.htm">August 31, 2016</A>
LinkBlack-edged Pluteus mushroom (Pluteus atromarginatus) in Lembolovo, 35 miles north from Saint Petersburg. Russia, August 31, 2016
Location on mapsUnnamed Road, Vaskelovo, Leningradskaya oblast', Russia, 188695
Blackedged shield mushrooms (<B>Pluteus atromarginatus</B>) on a pine tree in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-08-21.htm">August 21, 2017</A>
LinkBlackedged shield mushrooms (Pluteus atromarginatus) on a pine tree in Sosnovka Park. Saint Petersburg, Russia, August 21, 2017
Location on mapsSevernyy Prospekt, 26к1, St Petersburg, Russia, 194295
Blackedged shield mushrooms (<B>Pluteus atromarginatus</B>) cut from a pine tree in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-08-21.htm">August 21, 2017</A>
LinkBlackedged shield mushrooms (Pluteus atromarginatus) cut from a pine tree in Sosnovka Park. Saint Petersburg, Russia, August 21, 2017
Location on mapsSevernyy Prospekt, 26к1, St Petersburg, Russia, 194295
Gills of blackedged shield mushroom (<B>Pluteus atromarginatus</B>) in Tarkhovka Park near Sestroretsk, west from Saint Petersburg. Russia, <A HREF="../date-en/2017-09-22.htm">September 22, 2017</A>
LinkGills of blackedged shield mushroom (Pluteus atromarginatus) in Tarkhovka Park near Sestroretsk, west from Saint Petersburg. Russia, September 22, 2017
Location on mapsFedotovskaya Dorozhka, 27, Tarkhovka, Sankt-Peterburg, Russia, 197701
Black-edged Pluteus mushroom (<B>Pluteus atromarginatus</B>) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, <A HREF="../date-en/2018-08-20.htm">August 20, 2018</A>
LinkBlack-edged Pluteus mushroom (Pluteus atromarginatus) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, August 20, 2018
Location on mapsRozovopavil'onnaya Alleya, Pavlovsk, Sankt-Peterburg, Russia, 196621
Gills of black-edged Pluteus mushroom (<B>Pluteus atromarginatus</B>) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, <A HREF="../date-en/2018-08-20.htm">August 20, 2018</A>
LinkGills of black-edged Pluteus mushroom (Pluteus atromarginatus) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, August 20, 2018
Location on mapsOkruzhnaya Alleya, Pavlovsk, Sankt-Peterburg, Russia, 196625
Dissected black-edged Pluteus mushroom (<B>Pluteus atromarginatus</B>) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, <A HREF="../date-en/2018-08-20.htm">August 20, 2018</A>
LinkDissected black-edged Pluteus mushroom (Pluteus atromarginatus) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, August 20, 2018
Location on mapsOkruzhnaya Alleya, Pavlovsk, Sankt-Peterburg, Russia, 196625
Blackedged shield mushrooms (<B>Pluteus atromarginatus</B>) near Lembolovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2018-08-24.htm">August 24, 2018</A>
LinkBlackedged shield mushrooms (Pluteus atromarginatus) near Lembolovo, north from Saint Petersburg. Russia, August 24, 2018
Location on mapsUnnamed Road, Leningradskaya oblast', Russia, 188695

AI-generated summary of observations

Observations of Pluteus atromarginatus in Leningrad Oblast and north-western Russia reveal the fungus's presence in various locations. In Lembolovo, 35 miles north of Saint Petersburg, it was found on August 31, 2016. The mushroom was also spotted in Sosnovka Park, Saint Petersburg, on August 21, 2017, growing on a pine tree. Similar sightings were recorded in Tarkhovka Park near Sestroretsk on September 22, 2017, and in Pavlovsk Park, a suburb of Saint Petersburg, on August 20, 2018. The fungus was found to have distinct black-edged gills, as observed in Pavlovsk Park and Tarkhovka Park. Dissection of the mushroom in Pavlovsk Park provided further insight into its structure. Additional sightings were reported near Lembolovo on August 24, 2018, confirming the species' presence in the region. The observations span multiple years and locations, indicating the fungus's widespread distribution.

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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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