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Peziza vesiculosa – Blistered cup

Synonyms: Aleuria isochroa, Aleuria vesiculosa, Galactinia vesiculosa, Oedocephalum pallidum, Patellea coriariae, Peziza isochroa, Peziza stevensoniana, Pustularia stevensoniana, Pustularia vesiculosa, Rhopalomyces pallidus, Scodellina vesiculosa, Urnula minor.

Common name: blistered cup.

Russian name: Petsitsa puzyrchataya.

Extract from Wikipedia article: Peziza vesiculosa is a species of apothecial fungus belonging to the family Pezizaceae. This is a common species of Europe, with scattered records in other parts of the world. The pale, cup-shaped ascocarps can grow quite large (up to 10 cm (3.9 in) in diameter) and often form densely packed groups. It is found on nutrient-rich soils, rotting straw and manure and can often be seen on compost heaps. The edibility of Peziza species, including this one, is poorly known but this species is often considered poisonous.

AI-generated description

Peziza vesiculosa is a species of cup fungus that grows on soil, often in areas with rich organic matter. In St. Petersburg and Leningrad Oblast, it typically fruits from summer to autumn, preferring moist habitats such as riverbanks, forests, and grasslands. In north-western Russia, it has been found in similar environments, including sandy soils and deciduous forests, often associated with the roots of trees like birch and alder. The fungus produces medium-sized, cup-shaped fruiting bodies that are 2-6 cm in diameter, with a wavy or lobed margin and a smooth, yellow-brown to reddish-brown interior.

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

Common dung cup mushrooms (Peziza vesiculosa) on wood chips on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 2, 2017
Unnamed Road, Sankt-Peterburg, Russia

Common dung cup mushrooms (Peziza vesiculosa) in Sosnovka Park. Saint Petersburg, Russia, June 2, 2017
Unnamed Road, Sankt-Peterburg, Russia

Common dung cup mushrooms (Peziza vesiculosa) on decomposing wood chips in Sosnovka Park. Saint Petersburg, Russia, June 2, 2017
Unnamed Road, Sankt-Peterburg, Russia

Common dung cup mushrooms (Peziza vesiculosa) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 2, 2017
Unnamed Road, Sankt-Peterburg, Russia

Common dung cup mushrooms (Peziza vesiculosa) on decaying wood in Sosnovka Park. Saint Petersburg, Russia, June 2, 2017
Unnamed Road, Sankt-Peterburg, Russia

Common dung cup mushrooms (Peziza vesiculosa) om mulch in Saint Petersburg, Russia, June 2, 2017
Unnamed Road, Sankt-Peterburg, Russia

Group of common dung cup mushrooms (Peziza vesiculosa) in Sosnovka Park. Saint Petersburg, Russia, June 2, 2017
Unnamed Road, Sankt-Peterburg, Russia

Cluster of common dung cup mushrooms (Peziza vesiculosa) in Sosnovka Park. Saint Petersburg, Russia, June 2, 2017
Unnamed Road, Sankt-Peterburg, Russia

Close up of common dung cup mushrooms (Peziza vesiculosa) in Sosnovka Park. Saint Petersburg, Russia, June 2, 2017
Unnamed Road, Sankt-Peterburg, Russia

Common dung cup mushrooms (Peziza vesiculosa) on decomposing wood chips in Sosnovka Park. Saint Petersburg, Russia, June 4, 2017
Unnamed Road, Sankt-Peterburg, Russia

Common dung cup mushrooms (Peziza vesiculosa) in Sosnovka Park. Saint Petersburg, Russia, June 4, 2017
Unnamed Road, Sankt-Peterburg, Russia

Common dung cup mushrooms (Peziza vesiculosa) on decomposing wood chips in Sosnovka Park. Saint Petersburg, Russia, June 7, 2017
Unnamed Road, Sankt-Peterburg, Russia

Blistered cup fungus (Peziza vesiculosa)(?) near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017

Blistered cup fungus (Peziza vesiculosa) near a pile of mulch on Borovaya Street in Toksovo, north from Saint Petersburg. Russia, August 1, 2017
Borovaya ul., 1, Toksovo, Leningradskaya oblast', Russia, 188664

Blistered cup fungus (Peziza vesiculosa) on gravel near a pile of mulch on Borovaya Street in Toksovo, north from Saint Petersburg. Russia, August 1, 2017
Borovaya ul., 5, Toksovo, Leningradskaya oblast', Russia, 188664

Blistered cup fungus (Peziza vesiculosa) on disturbed soil near Dibuny, north-west from Saint Petersburg. Russia, August 6, 2017

Blistered cup fungus (Peziza vesiculosa)(?) near Dibuny, north-west from Saint Petersburg. Russia, September 28, 2017
Zapadniy Skorostnoy Diameter, Sankt-Peterburg, Russia, 197758

Blistered cup fungus (Peziza vesiculosa)(?) in a wet forest near Lisiy Nos, west from Saint Petersburg. Russia, September 1, 2018
Rabochiy Settlement, Sankt-Peterburg, Russia, 197755

AI-generated summary of observations

In Leningrad Oblast and north-western Russia, Peziza vesiculosa was observed growing on various substrates, including wood chips, decomposing wood, mulch, and disturbed soil. The fungus was found in Sosnovka Park, Saint Petersburg, on multiple occasions between June 2-7, 2017, often in groups or clusters. It was also spotted near Dibuny, Toksovo, and Lisiy Nos, with sightings recorded in July, August, and September of 2017 and 2018. The fungus appeared to thrive in areas with rich organic matter, such as wood chips and mulch, and was able to grow on a range of surfaces, including gravel and soil. Repeat observations in the same locations suggest that Peziza vesiculosa may be a common and persistent species in these regions.

Comments

• Search of mushroom species for given keywords "Peziza vesiculosa" was done through catalogueoflife.org.
• Selection of a particular species from the list of 19 species was performed automatically.
• Attributes of the species were taken from catalogueoflife.org.
• There is a Wikipedia article about this mushroom.

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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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