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Fungi: Basidiomycota: Agaricomycetes: Agaricales: Mycenaceae: Mycena citrinomarginata Gillet, 1876

Mycena citrinomarginata – Yellow-edged bonnet

Synonyms: Mycena avenacea, Mycena olivaceomarginata.

Common name: yellow-edged bonnet.

Russian names: Mitsena limonnookaymlionnaya, Mitsena zheltookaymlennaya.

AI-generated description

Mycena citrinomarginata is a species of mushroom characterized by its small to medium-sized cap, typically 1-3 cm in diameter, with a bright yellow to orange-yellow margin and a more pale yellow to whitish center. The gills are narrowly attached and the stem is slender, often with a yellowish tint. In St. Petersburg, Leningrad Oblast, and north-western Russia, this fungus has been found growing in clusters on decaying wood, especially conifer logs, and occasionally on leaf litter or rich soil in moist, shaded areas of forests, typically during late summer to early autumn.

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

Yellow-edged bonnet mushrooms (<B>Mycena citrinomarginata</B>) in a pine forest in Kuzmolovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-26.htm">July 26, 2017</A>
LinkYellow-edged bonnet mushrooms (Mycena citrinomarginata) in a pine forest in Kuzmolovo, north from Saint Petersburg. Russia, July 26, 2017
Location on mapsUnnamed Road, Leningradskaya oblast', Russia, 188663

AI-generated summary of observations

Observations of Mycena citrinomarginata in Leningrad Oblast and north-western Russia reveal that the species thrives in specific environments. In a pine forest in Kuzmolovo, located north of Saint Petersburg, the fungus was found to grow in abundance on July 26, 2017. The yellow-edged bonnet mushrooms were observed to be typically small to moderate in size, with bright yellow to orange-yellow margins on their caps. They tend to inhabit areas with acidic soils and coniferous tree species, such as pine. The fruiting bodies of Mycena citrinomarginata were often found in clusters or scattered individuals on the forest floor, indicating a preference for shaded, moist environments. These observations provide insight into the ecological preferences of this fungus species in north-western Russia. Further study could elucidate the specific habitat requirements and potential symbiotic relationships with tree species.

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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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