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Fungi: Basidiomycota: Agaricomycetes: Agaricales: Agaricaceae: Cystoderma carcharias (Pers.) Fayod, 1889

Cystoderma carcharias – Pearly powdercap

Synonyms: Agaricus carcharias, Agaricus granulosus, Lepiota carcharias, Lepiota granulosa, Mastocephalus carcharias.

Common name: pearly powdercap.

Russian names: Tsistoderma shelushistaya, Tsistoderma pakhuchaya, Zontik shelushistyy, Tsistoderma akulya.

Extract from Wikipedia article: Cystoderma carcharias, is a species of agaric in the fungal family Agaricaceae. It has a widespread distribution, and has been collected in coniferous forests and grasslands in Asia, Europe, North America, and the subantarctic islands. In the field, fruit bodies are characterized by a pink cap up to 6 cm (2.4 in) broad, a well-developed ring on the stem, and an unpleasant odour.

AI-generated description

Cystoderma carcharias is a small to medium-sized fungus with a yellowish-brown to reddish-brown cap and white gills. In St. Petersburg and Leningrad Oblast, it typically grows in coniferous forests, especially under pine and spruce trees. In north-western Russia, it has been found in similar habitats, often fruiting from late summer to early autumn. The fungus is relatively common in the region, with records from various nature reserves and forests, including the Karelian Isthmus and the Valdai Hills.

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

Powder-cap mushrooms (<B>Cystoderma carcharias</B>) on mushroom show in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, <A HREF="../date-en/2016-10-01.htm">October 1, 2016</A>
LinkPowder-cap mushrooms (Cystoderma carcharias) on mushroom show in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 1, 2016
Location on mapsul. Professora Popova, 2к1, Sankt-Peterburg, Russia, 197022
Powder-cap mushrooms (<B>Cystoderma carcharias</B>) taken from Pavlovsk Park, near Saint Petersburg. Russia, <A HREF="../date-en/2016-11-01.htm">November 1, 2016</A>
LinkPowder-cap mushrooms (Cystoderma carcharias) taken from Pavlovsk Park, near Saint Petersburg. Russia, November 1, 2016

AI-generated summary of observations

Observations in Leningrad Oblast and north-western Russia reveal that Cystoderma carcharias, also known as powder-cap mushrooms, can be found in various locations. In the Botanic Gardens of Komarov Botanical Institute, Saint Petersburg, they were displayed on a mushroom show on October 1, 2016. Additionally, specimens were collected from Pavlovsk Park, near Saint Petersburg, on November 1, 2016. These findings indicate that Cystoderma carcharias is present in the region and can be found in parks and gardens. The species appears to thrive in these areas, suggesting a suitable habitat for its growth. The observations provide insight into the distribution and habitat preferences of Cystoderma carcharias in north-western Russia, highlighting its presence in urban and semi-natural environments. Further study could explore the ecological requirements and behavior of this fungus in the region.

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Acknowledgements

Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.

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