Pulvinula convexella mushrooms in Toksovo, suburb of Saint Petersburg. Russia, July 19, 2016Synonyms: Barlaea constellatio, Barlaea convexella, Barlaeina constellatio, Barlaeina convexella, Crouania constellatio, Humaria convexella, Lamprospora constellatio, Leucoloma constellatio, Leucoloma convexellum, Peziza constellatio, Peziza convexella, Peziza fuckelii, Pulvinula constellatio.
Russian name: Pulvinula melkosvodchataya.
Pulvinula convexella is a small, disc-shaped fungus that grows on soil, moss, and decaying plant matter. In St. Petersburg, Leningrad Oblast, and north-western Russia, it typically fruits in late summer to early autumn, often in shaded, humid areas with rich soil. The fungus has a convex to flat cap, 0.5-2 cm in diameter, with a smooth, yellow-brown to reddish-brown surface, and a short, stout stem. It is considered a rare species in the region, with scattered records from mixed forests, bogs, and heathlands.
Fungus Pulvinula convexella and a small omphaloid mushroom Rickenella fibula near an old bonfire site in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
Fungus Pulvinula convexella on old campfire site in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
Cup mushrooms Pulvinula convexella on the site of old campfire in Orekhovo, 40 miles north from Saint Petersburg. Russia, August 18, 2017
Cup fungus Pulvinula convexella, dog lichen Peltigera didactyla and moss on carbonized wood in Orekhovo, 40 miles north from Saint Petersburg. Russia, August 18, 2017
Cup mushrooms Pulvinula convexella on burnt ground in Orekhovo, 40 miles north from Saint Petersburg. Russia, August 18, 2017
Cup mushrooms Pulvinula convexella(?) on Lenin Trail near Dibuny, north-west from Saint Petersburg, Russia, August 15, 2018
Cup mushrooms Pulvinula convexella(?) on a bonfire site west from Kavgolovo Lake near Toksovo, north from Saint Petersburg. Russia, August 21, 2018
Cup mushrooms Pulvinula convexella on a bonfire site near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, September 5, 2018
Small orange cups of Ascomycete mushrooms Pulvinula convexella near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024
Small orange cups of Ascomycete mushrooms Pulvinula convexella on exposed soil near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024
Small red cups of Ascomycete mushrooms Pulvinula convexella together with some tiny brown hairy cups near a road west from Kavgolovskoe Lake (Syariunlakhti), near Toksovo. North from Saint Petersburg, Russia, July 26, 2024
Small orange Ascomycete mushrooms Pulvinula convexella on a side of a road around Kavgolovo Lake between Oselki and Toksovo, north from Saint Petersburg. Russia, August 13, 2024
Small cups of Ascomycete mushrooms Pulvinula convexella between Oselki and Toksovo, north from Saint Petersburg. Russia, August 13, 2024Pulvinula convexella was observed in various locations in Leningrad Oblast and north-western Russia, often near old campfire sites or burnt ground. In Sosnovka Park, it was found with Rickenella fibula near an old bonfire site. Similar observations were made in Orekhovo, 40 miles north of Saint Petersburg, where the fungus grew on carbonized wood and burnt ground. The fungus was also spotted near Toksovo, Lisiy Nos, and Kavgolovskoe Lake, often on exposed soil or near roads. Observations spanned from June to September, with multiple sightings in July and August. The fungus typically appeared as small orange or red cups, sometimes growing alongside other species like dog lichen and moss. Its presence was consistently associated with disturbed or burned areas, suggesting a possible affinity for such environments.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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