Dark mushrooms Arrhenia epichysium (Omphalina epichysium) on an oak stump in Alexander Park. Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, September 4, 2017
Doroga Na Aleksandrovku, Sankt-Peterburg, Russia, 196603Synonyms: Agaricus epicharis, Agaricus epichysium, Clitocybe epichysium, Gerronema epichysium, Lepiota epicharis, Mastocephalus epicharis, Omphalia epichysium, Omphalina epichysium.
Russian names: Omfalina kubkovidnaya, Omfalina kubovidnaya, Arreniya kubkovidnaya.
Extract from Wikipedia article: Arrhenia epichysium is a species of agaric fungus in the family Hygrophoraceae. It is found in Asia, Europe, and North America. The fruit body has small brown to dark gray caps measuring 1–3 cm (0.4–1.2 in) in diameter. The cap color changes to light gray to tan when it is dry. Gills are narrow and thin, placed together closely, and decurrently attached to the stipe. The spores are smooth and ellipsoid, measuring 6–7.5 µm.
Arrhenia epichysium is a small to medium-sized fungus that grows on mosses, liverworts, and other fungi. In St. Petersburg, Leningrad Oblast, and north-western Russia, it typically fruits from June to October, preferring humid, shaded areas with rich vegetation. The species has been found in various habitats, including forests, bogs, and heathlands, often associated with Sphagnum mosses. Its cap is 0.5-2 cm in diameter, wavy or lobed, and ranges in color from yellow-brown to reddish-brown. The stem is thin, fragile, and usually shorter than the cap diameter.
Dark mushrooms Arrhenia epichysium (Omphalina epichysium) on an oak stump in Alexander Park. Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, September 4, 2017Doroga Na Aleksandrovku, Sankt-Peterburg, Russia, 196603
Dark caps of mushrooms Arrhenia epichysium (Omphalina epichysium) on an oak stump in Alexander Park. Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, September 4, 2017Doroga Na Aleksandrovku, Sankt-Peterburg, Russia, 196603Observations of the fungus Arrhenia epichysium in Leningrad Oblast and north-western Russia reveal its presence on oak stumps. On an oak stump in Alexander Park, Pushkin, near Saint Petersburg, dark mushrooms of Arrhenia epichysium were found on September 4, 2017. The caps of these mushrooms were particularly notable for their dark coloration. Further observation of the same oak stump revealed multiple dark-capped mushrooms of the same species, indicating a thriving population of Arrhenia epichysium in this specific location. These findings suggest that Arrhenia epichysium can be found in the region's parks and forests, particularly on decaying wood such as oak stumps, during late summer. The species appears to favor these types of substrates for growth.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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