Pine powdercap mushrooms (Cystoderma jasonis) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 11, 2017
Unnamed Road, Kannelyarvi, Leningradskaya oblast', Russia, 188850Synonyms: Agaricus jasonis, Armillaria jasonis, Cystoderma amianthinum, Lepiota amianthina.
Common name: pine powdercap.
Russian name: Tsistoderma Yasona.
Cystoderma jasonis is a small to medium-sized agaric fungus with a hemispherical to convex cap, 1-4 cm in diameter, that is yellow-brown to reddish-brown in color and covered with fine, white to yellowish granules or scales. The gills are free, crowded, and white. The stem is slender, 2-6 cm long and 0.2-0.5 cm thick, and has a membranous ring. In St. Petersburg, Leningrad Oblast, and north-western Russia, Cystoderma jasonis typically grows in coniferous forests, especially with spruce and pine, from late summer to early autumn. It is considered a rare species in the region.
Pine powdercap mushrooms (Cystoderma jasonis) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 11, 2017Unnamed Road, Kannelyarvi, Leningradskaya oblast', Russia, 188850
Pine powdercap mushrooms (Cystoderma jasonis)(?) near Kuzmolovo, north from Saint Petersburg. Russia, September 24, 2017Unnamed Road, Leningradskaya oblast', Russia, 188663
Pine powdercap mushrooms (Cystoderma jasonis) together with small Mycena in Tarkhovka near Sestroretsk, west from Saint Petersburg. Russia, August 27, 2018Fedotovskaya Dorozhka, 28, Tarkhovka, Sankt-Peterburg, Russia, 197701
Small Mycena mushroom together with immature pine powdercap (Cystoderma jasonis) in Tarkhovka near Sestroretsk, west from Saint Petersburg. Russia, August 27, 2018Fedotovskaya Dorozhka, 28, Tarkhovka, Sankt-Peterburg, Russia, 197701Observations of Cystoderma jasonis in Leningrad Oblast and north-western Russia reveal the fungus grows in various locations. In Kannelyarvi, 45 miles north of Saint Petersburg, pine powdercap mushrooms were found on August 11, 2017. Similar sightings occurred near Kuzmolovo on September 24, 2017, and in Tarkhovka near Sestroretsk on August 27, 2018. Notably, the fungus was observed growing alongside small Mycena mushrooms in Tarkhovka, with both mature and immature pine powdercap specimens present. These observations suggest Cystoderma jasonis can thrive in different areas of Leningrad Oblast, often in association with other fungal species. The sightings span multiple months, indicating a potentially extended growth period for the fungus in this region.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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