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Fungi: Basidiomycota: Agaricomycetes: Agaricales: Inocybaceae: Crepidotus applanatus (Pers.) P. Kumm., 1871

Crepidotus applanatus – Flat oysterling

Synonyms: Agaricus applanatus, Agaricus globiger, Agaricus putrigenus, Crepidotus globiger, Crepidotus putrigenus.

Common name: flat oysterling.

Russian name: Krepidot uploshchennyy.

AI-generated description

Crepidotus applanatus is a species of fungus that grows on decaying wood, typically found on coniferous trees. In St. Petersburg and Leningrad Oblast, it has been recorded in urban parks and forests, often on spruce and pine stumps. In north-western Russia, it is commonly encountered in mixed and coniferous forests, particularly in areas with abundant moisture. The fungus produces fan-shaped or semicircular caps that are 1-4 cm in diameter, with a smooth, wavy margin and a white to cream-colored spore print. It fruits from July to October, with peak activity in August and September.

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

Flat oysterling mushrooms (<B>Crepidotus applanatus</B>)(?) from a tree stump on Old Sylvia Alley in Pavlovsk Park. Pavlovsk near Saint Petersburg, Russia, <A HREF="../date-en/2016-07-28.htm">July 28, 2016</A>
LinkFlat oysterling mushrooms (Crepidotus applanatus)(?) from a tree stump on Old Sylvia Alley in Pavlovsk Park. Pavlovsk near Saint Petersburg, Russia, July 28, 2016
Location on mapsБеседка великому князю Вячеславу Константиновичу, Rozovopavilyonnaya al., Pavlovsk, g. Sankt-Peterburg, Russia, 196621

AI-generated summary of observations

The fungus Crepidotus applanatus was observed growing on a tree stump in Pavlovsk Park, specifically on Old Sylvia Alley, in the Leningrad Oblast region of north-western Russia. The observation took place on July 28, 2016. The mushrooms were identified as flat oysterling, characterized by their unique shape and growth habit. This species is known to grow on decaying wood, which is consistent with its presence on the tree stump in Pavlovsk Park. The specific location of the observation suggests that Crepidotus applanatus can be found in urban and suburban areas, including parks and gardens, in addition to natural habitats. The sighting provides insight into the distribution and ecology of this fungus species in north-western Russia. Further observations are necessary to fully understand its range and habits in the region. The species' presence highlights the diversity of fungal life 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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