Synonyms: Agaricus denigratus, Agaricus dissimulans, Agaricus erebius, Agaricus jecorinus, Agaricus leveillianus, Agrocybe erebia, Armillaria denigrata, Inocybe annulata, Omphalia denigrata, Pholiota erebia, Togaria erebia.
Common name: dark fieldcap.
Russian names: Poliovka tiomnaya, Agrotsibe erebiya.
Cyclocybe erebia is a species of fungus that belongs to the family Strophariaceae. It has been found in St. Petersburg, Leningrad Oblast, and other parts of north-western Russia, typically growing on decaying wood, stumps, and other organic matter in coniferous and mixed forests. The fungus produces small to medium-sized fruiting bodies with bell-shaped or convex caps that range in color from brown to gray-brown, and have a distinctive ring on the stem.
Observations of Cyclocybe erebia in Leningrad Oblast and north-western Russia reveal that the fungus can be found in various environments. In Sosnovka Park, Saint Petersburg, it grows in both open areas and shaded spots under maple trees. The mushrooms were observed on September 16, 2017. In a garden of a summer house in Roshchino, north of Saint Petersburg, young and mature specimens were found on September 7, 2018. The presence of Cyclocybe erebia in gardens and parks suggests that it can thrive in cultivated and urban areas, as well as in more natural environments. The fungus appears to be able to grow in a range of conditions, including shade and open sunlight, and can be found in the region during late summer.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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