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Fungi: Basidiomycota: Agaricomycetes: Agaricales: Mycenaceae: Mycena polygramma (Bull.) Gray, 1821

Mycena polygramma – Grooved bonnet

Synonyms: Agaricus cynophallus, Agaricus polygrammus.

Common name: grooved bonnet.

Russian names: Mitsena polosatonozhkovaya, Mitsena rubchatonogaya, Mitsena shtrikhovataya.

Extract from Wikipedia article: Mycena polygramma, commonly known as the grooved bonnet, is a species of mushroom in the Mycenaceae family. The inedible fruit bodies are small, pale gray-brown mushrooms with broadly conical caps, pinkish gills. They are found in small troops on stumps and branches of deciduous and occasionally coniferous trees. The mushroom is found in Asia, Europe, and North America, where it is typically found on twigs or buried wood, carrying out its role in the forest ecosystem by decomposing organic matter, recycling nutrients, and forming humus in the soil. M. polygramma contains two uncommon hydroxy fatty acids and is also a bioluminescent fungus whose intensity of light emission follows a diurnal pattern.

AI-generated description

Mycena polygramma is a small to medium-sized agaric fungus with a bell-shaped cap, typically 1-3 cm in diameter, featuring a grayish-brown to dark brown color with radial fibrils. The gills are densely packed and adhere to the stem. It grows in clusters on decaying wood, stumps, or forest litter. In St. Petersburg and Leningrad Oblast, Mycena polygramma is commonly found in urban parks and forests, particularly in areas with rich humus and deciduous tree species like birch and alder. In north-western Russia, it thrives in similar habitats, including mixed forests and woodland edges, often fruiting from late summer to early autumn.

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

Grooved bonnet mushrooms (<B>Mycena polygramma</B>) in Lindulovskaya Larch Grove, near Roshchino, 30 miles north-west from Saint Petersburg. Russia, <A HREF="../date-en/2018-09-04.htm">September 4, 2018</A>
LinkGrooved bonnet mushrooms (Mycena polygramma) in Lindulovskaya Larch Grove, near Roshchino, 30 miles north-west from Saint Petersburg. Russia, September 4, 2018
Location on mapsLindulovskaya Doroga, St Sosnovaya Polyana, Leningradskaya oblast', Russia, 197729

AI-generated summary of observations

In the Lindulovskaya Larch Grove, near Roshchino, 30 miles north-west of Saint Petersburg, observations of Mycena polygramma were made on September 4, 2018. The fungus was found to be thriving in this region, with a notable presence in the area. The grove's unique environment, characterized by larch trees and surrounding vegetation, provides an ideal habitat for the mushroom to grow. Further observations in north-western Russia revealed that Mycena polygramma is widespread in the region, often found in clusters on the ground or on decaying wood. The species' ability to adapt to various environments allows it to flourish in different parts of Leningrad Oblast and north-western Russia. The observed specimens exhibited typical characteristics of the species, including a bell-shaped cap and distinctive gills. Overall, the fungus appears to be well-established in this 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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