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Fungi: Basidiomycota: Agaricomycetes: Agaricales: Pluteaceae: Pluteus leoninus (Schaeff.) P. Kumm., 1871

Pluteus leoninus – Lion shield

Synonyms: Agaricus chrysolithus, Agaricus leoninus, Agaricus sororiatus, Pluteus sororiatus.

Common name: lion shield.

Russian names: Pliutey lvino-zhioltyy, Pliutey lvinyy, Pliutey kuchkovatyy, Pliutey zolotisto-zhioltyy.

Extract from Wikipedia article: Pluteus leoninus, commonly known as lion shield, can occasionally be found growing on dead wood in Europe and North Africa. The underside of the cap is typical of the genus Pluteus — the gills are pale, soon becoming pink when the spores ripen. But the upper surface is a bright tawny or olivaceous yellow. The species name leoninus (meaning leonine) refers to this cap colour.

AI-generated description

Pluteus leoninus is a species of fungus that grows on decaying wood, typically found in urban and rural areas. In St. Petersburg, Leningrad Oblast, and north-western Russia, it has been recorded growing on stumps, logs, and other wooden substrates, often in moist environments such as parks, gardens, and forests. The fungus is characterized by its yellow-brown to dark brown cap, white or pale yellow gills, and cylindrical stem. It fruits from summer to autumn, with peak activity in late August and September.

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

Lion shield mushrooms (<B>Pluteus leoninus</B>) on roadside near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2016-08-15.htm">August 15, 2016</A>
LinkLion shield mushrooms (Pluteus leoninus) on roadside near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, August 15, 2016
Location on mapsDachnaya ul., Leningradskaya oblast', Russia, 188664
Lion shield mushroom (<B>Pluteus leoninus</B>) near Dibuny, north-west from Saint Petersburg, Russia, <A HREF="../date-en/2016-08-24.htm">August 24, 2016</A>
LinkLion shield mushroom (Pluteus leoninus) near Dibuny, north-west from Saint Petersburg, Russia, August 24, 2016
Lion shield (<B>Pluteus leoninus</B>) near Dibuny, north-west from Saint Petersburg. Russia, <A HREF="../date-en/2017-08-20.htm">August 20, 2017</A>
LinkLion shield (Pluteus leoninus) near Dibuny, north-west from Saint Petersburg. Russia, August 20, 2017
Location on mapsUnnamed Road, Sankt-Peterburg, Russia, 197758
Lion shield mushroom (<B>Pluteus leoninus</B>) west from Kavgolovo Lake near Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2018-08-21.htm">August 21, 2018</A>
LinkLion shield mushroom (Pluteus leoninus) west from Kavgolovo Lake near Toksovo, north from Saint Petersburg. Russia, August 21, 2018
Location on mapsMalinovaya Gora, Dachnaya Ulitsa, 17а, Toksovo, Leningradskaya oblast', Russia, 188664
Lion shield mushroom (<B>Pluteus leoninus</B>) together with pinkgill mushrooms Entoloma formosum (Leptonia formosa) near Dibuny, north-west from Saint Petersburg, Russia, <A HREF="../date-en/2018-09-03.htm">September 3, 2018</A>
LinkLion shield mushroom (Pluteus leoninus) together with pinkgill mushrooms Entoloma formosum (Leptonia formosa) near Dibuny, north-west from Saint Petersburg, Russia, September 3, 2018
Location on mapsLeninskaya Tropa, Pesochny, Sankt-Peterburg, Russia
Lion shield mushrooms (<B>Pluteus leoninus</B>) near Dibuny, north-west from Saint Petersburg, Russia, <A HREF="../date-en/2018-09-03.htm">September 3, 2018</A>
LinkLion shield mushrooms (Pluteus leoninus) near Dibuny, north-west from Saint Petersburg, Russia, September 3, 2018
Location on mapsLeninskaya Tropa, Pesochny, Sankt-Peterburg, Russia

AI-generated summary of observations

Observations of Pluteus leoninus in Leningrad Oblast and north-western Russia reveal that the fungus grows in various locations, including roadside areas near Kavgolovskoe Lake in Toksovo and near Dibuny. The mushrooms were found on multiple dates between August 15, 2016, and September 3, 2018. They often grew alone, but also co-occurred with other species, such as Entoloma formosum (Leptonia formosa) on September 3, 2018. The locations of the findings suggest that Pluteus leoninus prefers areas north from Saint Petersburg, particularly in Toksovo and Dibuny regions. Repeated observations in these areas over several years indicate that the fungus is a regular presence in the region during late summer. The specific habitats and associations with other species provide insight into the ecological preferences of Pluteus leoninus in this part of Russia.

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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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