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Fungi: Basidiomycota: Agaricomycetes: Agaricales: Hymenogastraceae: Hypholoma polytrichi (Fr.) Ricken, 1912

Hypholoma polytrichi

Synonyms: Agaricus polytrichi, Agaricus udus, Geophila polytrichi, Naematoloma polytrichi, Psilocybe polytrichi, Psilocybe uda.

Russian name: Lozhnoopionok mokhovoy.

AI-generated description

Hypholoma polytrichi is a species of fungus that grows on mosses, particularly Polytrichum species. In St. Petersburg, Leningrad Oblast, and north-western Russia, it typically fruits in summer to early autumn, forming small to medium-sized caps that are brown to grey-brown in color. The fungus is found in moist, shaded areas with abundant moss growth, such as forests, woodland edges, and rocky outcrops. It is considered a rare species in the region, but can be locally common in suitable habitats.

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

Small mushrooms <B>Hypholoma polytrichi</B> taken from Lindulovskaya Larch Grove, near Roshchino, 30 miles north-west from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-31.htm">July 31, 2017</A>
LinkSmall mushrooms Hypholoma polytrichi taken from Lindulovskaya Larch Grove, near Roshchino, 30 miles north-west from Saint Petersburg. Russia, July 31, 2017
Location on mapspr. Raevskogo, 24, Sankt-Peterburg, Russia, 194064
Small mushrooms <B>Hypholoma polytrichi</B> with long stems taken from Lindulovskaya Larch Grove, near Roshchino, 30 miles north-west from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-31.htm">July 31, 2017</A>
LinkSmall mushrooms Hypholoma polytrichi with long stems taken from Lindulovskaya Larch Grove, near Roshchino, 30 miles north-west from Saint Petersburg. Russia, July 31, 2017
Location on mapspr. Raevskogo, 24, Sankt-Peterburg, Russia, 194064
Small yellow mushrooms <B>Hypholoma polytrichi</B>(?) in moss in Petiayarvi, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-09-17.htm">September 17, 2017</A>
LinkSmall yellow mushrooms Hypholoma polytrichi(?) in moss in Petiayarvi, north from Saint Petersburg. Russia, September 17, 2017
Location on mapsUnnamed Road, Leningradskaya oblast', Russia, 188732
Long legged yellow mushrooms <B>Hypholoma polytrichi</B>(?) in moss in Petiayarvi, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-09-17.htm">September 17, 2017</A>
LinkLong legged yellow mushrooms Hypholoma polytrichi(?) in moss in Petiayarvi, north from Saint Petersburg. Russia, September 17, 2017
Location on mapsUnnamed Road, Leningradskaya oblast', Russia, 188732

AI-generated summary of observations

Observations of Hypholoma polytrichi in Leningrad Oblast and north-western Russia revealed distinct characteristics. In Lindulovskaya Larch Grove, near Roshchino, small mushrooms with typical caps were found on July 31, 2017. Additionally, specimens with notably long stems were also discovered in the same location. Further observations in Petiayarvi, north of Saint Petersburg, on September 17, 2017, revealed small yellow mushrooms, potentially Hypholoma polytrichi, growing in moss. Some of these had long legs, a distinctive feature. The fungus was found to thrive in mossy environments, with variations in stem length and cap color observed across different locations. These findings provide insight into the morphology and habitat preferences of Hypholoma polytrichi in the region. The species appears to be adaptable, with varying physical characteristics depending on location and substrate.

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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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