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Fungi: Basidiomycota: Agaricomycetes: Agaricales: Tricholomataceae: Tricholoma sejunctum (Sowerby) Quél., 1872

Tricholoma sejunctum – Deceiving knight

Synonyms: Agaricus coryphaeus, Agaricus leucoxanthus, Agaricus sejunctus, Gyrophila equestris, Gyrophila sejuncta, Melanoleuca sejuncta, Tricholoma coryphaeum.

Common name: deceiving knight.

Russian name: Ryadovka obosoblennaya, Ryadovka otlichaiushchayasya.

Extract from Wikipedia article: Tricholoma sejunctum (colloquially yellow blusher in the eastern regions of North America) is a mushroom that appears across much of the Northern Hemisphere and is associated with pine forests.

AI-generated description

Tricholoma sejunctum is a species of fungus that belongs to the family Tricholomataceae. It has a cap that ranges from grey-brown to dark brown, often with a distinctive umbo, and can grow up to 8 cm in diameter. The gills are white or light yellowish, and the stem is typically white or pale grey. In St. Petersburg, Leningrad Oblast, and north-western Russia, Tricholoma sejunctum has been found in coniferous and mixed forests, often associated with spruce and pine trees. It typically fruits from late summer to early autumn, and can be found in a variety of habitats, including mossy areas and sandy soils. The fungus is considered edible, but its quality is reportedly variable.

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

Deceiving Knight mushrooms (<B>Tricholoma sejunctum</B>) in Alexander Park in Pushkin, suburb of Saint Petersburg. Russia, <A HREF="../date-en/2016-07-31.htm">July 31, 2016</A>
LinkDeceiving Knight mushrooms (Tricholoma sejunctum) in Alexander Park in Pushkin, suburb of Saint Petersburg. Russia, July 31, 2016
Location on mapsFermskaya dor., Pushkin, g. Sankt-Peterburg, Russia, 196605
Deceiving Knight mushrooms (<B>Tricholoma sejunctum</B>) in a forest in Alexander Park in Pushkin, suburb of Saint Petersburg. Russia, <A HREF="../date-en/2016-07-31.htm">July 31, 2016</A>
LinkDeceiving Knight mushrooms (Tricholoma sejunctum) in a forest in Alexander Park in Pushkin, suburb of Saint Petersburg. Russia, July 31, 2016
Location on mapsFermskaya dor., Pushkin, g. Sankt-Peterburg, Russia, 196605
Deceiving Knight mushrooms (<B>Tricholoma sejunctum</B>) near Dibuny, north-west from Saint Petersburg, Russia, <A HREF="../date-en/2016-08-24.htm">August 24, 2016</A>
LinkDeceiving Knight mushrooms (Tricholoma sejunctum) near Dibuny, north-west from Saint Petersburg, Russia, August 24, 2016
Old deceiving knight mushroom (<B>Tricholoma sejunctum</B>) near Orekhovo, 40 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2016-09-09.htm">September 9, 2016</A>
LinkOld deceiving knight mushroom (Tricholoma sejunctum) near Orekhovo, 40 miles north from Saint Petersburg. Russia, September 9, 2016
Deceiving knight mushrooms (<B>Tricholoma sejunctum</B>)(?) south-west from Dibuny - Pesochnyi, near Saint Petersburg. Russia, <A HREF="../date-en/2016-09-14.htm">September 14, 2016</A>
LinkDeceiving knight mushrooms (Tricholoma sejunctum)(?) south-west from Dibuny - Pesochnyi, near Saint Petersburg. Russia, September 14, 2016
Location on mapsUnnamed Road, Pesochnyy, g. Sankt-Peterburg, Russia
Deceiving knight mushrooms (<B>Tricholoma sejunctum</B>) west from Kannelyarvi, 45 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2018-08-31.htm">August 31, 2018</A>
LinkDeceiving knight mushrooms (Tricholoma sejunctum) west from Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 31, 2018
Location on mapsUnnamed Road, Kannel'yarvi, Leningradskaya oblast', Russia, 188850
Deceiving knight mushrooms (<B>Tricholoma sejunctum</B>) in a forest east from a train stop Platform 46 km near Semrino, south from Saint Petersburg. Russia, <A HREF="../date-en/2024-08-10.htm">August 10, 2024</A>
LinkDeceiving knight mushrooms (Tricholoma sejunctum) in a forest east from a train stop Platform 46 km near Semrino, south from Saint Petersburg. Russia, August 10, 2024
Location on mapsГатчинский муниципальный округ, Ленинградская область, Северо-Западный федеральный округ, 188345, Россия

AI-generated summary of observations

Observations of Tricholoma sejunctum in Leningrad Oblast and north-western Russia reveal its presence in various locations. The fungus was found in Alexander Park in Pushkin, a suburb of Saint Petersburg, on July 31, 2016, as well as near Dibuny on August 24, 2016. Additional sightings occurred near Orekhovo on September 9, 2016, and south-west from Dibuny on September 14, 2016. Further observations were made west from Kannelyarvi on August 31, 2018, and east from a train stop near Semrino on August 10, 2024. The sightings span multiple years, indicating the fungus's consistent presence in the region. The locations vary from forests to parks, suggesting Tricholoma sejunctum can thrive in different environments within Leningrad Oblast and north-western Russia. The observations provide insight into the distribution and persistence of this species in the area.

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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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