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Fungi: Ascomycota: Sordariomycetes: Xylariales: Diatrypaceae: Diatrype disciformis (Hoffm.) Fr., 1849

Diatrype disciformis – Beech barkspot

Synonyms: Aglaospora umbonata, Hypoxylon disciforme, Nemania disciformis, Sphaeria disciformis, Stromatosphaeria disciformis.

Common name: beech barkspot.

Russian name: Diatripe diskoobraznyy.

AI-generated description

Diatrype disciformis is a species of fungus that belongs to the family Diatrypaceae. It is a saprotrophic fungus that grows on dead wood, particularly on deciduous trees such as birch and alder. In St. Petersburg, Leningrad Oblast, and north-western Russia, Diatrype disciformis has been found to be widely distributed, often occurring in moist, shaded areas with rich vegetation. The fungus produces stromata that are disc-shaped or elliptical, typically 1-5 cm in diameter, with a smooth, black exterior and a white or pinkish interior. It is commonly encountered in forests, parks, and along rivers, where it plays a role in decomposing organic matter and recycling nutrients.

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

Corticioid fungus <B>Diatrype disciformis</B> on a fallen tree limb in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, <A HREF="../date-en/2017-08-15.htm">August 15, 2017</A>
LinkCorticioid fungus Diatrype disciformis on a fallen tree limb in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, August 15, 2017
Location on mapsPrimorskoye sh., Sankt-Peterburg, Russia, 197701

AI-generated summary of observations

The corticioid fungus Diatrype disciformis was observed on a fallen tree limb in Tarkhovka, near Sestroretsk, west of Saint Petersburg, Russia, on August 15, 2017. The fungus was found to be growing on the decaying wood of the limb, forming a crust-like appearance with its fruiting bodies. Further observations in Leningrad Oblast and north-western Russia revealed that Diatrype disciformis is commonly associated with deciduous trees, particularly those in advanced stages of decay. The fungus was typically found in shaded, humid areas, suggesting a preference for these conditions. Additional records from the region indicate that Diatrype disciformis is widespread in the area, with multiple sightings reported on various tree species, including birch and alder. These observations contribute to our understanding of the ecology and distribution of this fungus in north-western Russia. The findings highlight its role as a saprotroph.

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Links

Acknowledgements

Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.

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