Orange globose fruiting bodies of Yellow Spot mushrooms (Nectria peziza) on a stump in Sosnovka Park. Saint Petersburg, Russia, September 23, 2017
Unnamed Road, Sankt-Peterburg, RussiaSynonyms: Byssonectria bryophila, Byssonectria epigaea, Cucurbitaria aurea, Cucurbitaria peziza, Dialonectria aurea, Dialonectria peziza, Hydropisphaera peziza, Nectria aurea, Nectria epigaea, Neuronectria peziza, Sphaeria aurea, Sphaeria peziza.
Common name: yellow spot.
Russian name: Nektriya petsitsevidnaya.
Extract from Wikipedia article: Nectria peziza or yellow spot is an ascomycete fungus with bright yellow to orange globose fruiting bodies (0.2 – 0.4 mm across) found on rotting polypores, well rotted deadwood, bark, dung, and decaying cloth. Its globular fruiting bodies (peritheca), quite large for the genus, may be isolated or crowded; they have a slightly prominent black dot at the top, the ostiolum, this being the entrance to the inner cavity; the bodies often collapse into a cup-shape when dry and the colour fades to pale yellow or whitish.
Nectria peziza is a species of fungus that belongs to the family Nectriaceae. It is characterized by its bright orange to reddish-orange color and globose to subglobose perithecia. In St. Petersburg, Leningrad Oblast, and north-western Russia, Nectria peziza has been found growing on decaying wood, particularly on fallen branches and trunks of deciduous trees, such as birch and alder. The fungus typically fruits in late summer to early autumn, with perithecia measuring 0.5-1.5 mm in diameter. It is considered a relatively rare species in the region, but can be locally common in areas with abundant decaying wood substrates.
Orange globose fruiting bodies of Yellow Spot mushrooms (Nectria peziza) on a stump in Sosnovka Park. Saint Petersburg, Russia, September 23, 2017Unnamed Road, Sankt-Peterburg, RussiaThe fungus Nectria peziza was observed in Leningrad Oblast and north-western Russia, specifically in Sosnovka Park, Saint Petersburg. On September 23, 2017, orange globose fruiting bodies of the Yellow Spot mushroom were found on a stump. This sighting is notable as it provides evidence of the presence of Nectria peziza in this region. The fungus was likely growing on decaying wood, which is a common substrate for this species. The observation suggests that Nectria peziza can thrive in the temperate climate of north-western Russia, and its fruiting bodies can be found in urban parks and forests. Further observations are needed to fully understand the distribution and ecology of this fungus in the region. The sighting in Sosnovka Park highlights the importance of continued monitoring of fungal species in Leningrad Oblast and surrounding areas.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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