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Plicatura nivea – Snow-white crust

Synonyms: Merulius niveus, Merulius rimosus, Plicatura alni, Sesia nivea, Trogia alni.

Common name: snow-white crust.

Russian name: Plikatura belosnezhnaya.

AI-generated description

Plicatura nivea is a species of fungus in the family Pezizaceae. It has been found in St. Petersburg, Leningrad Oblast, and north-western Russia, typically growing on decaying wood, especially coniferous trees. The fungus produces small to medium-sized, cup-shaped fruiting bodies with white to cream-colored hymenium and a felty, whitish exterior. In the region, it tends to fruit from summer to autumn, often in moist, shaded areas with abundant woody debris.

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

Very thin white corticioid mushrooms snow-white crust (Plicatura nivea)(?) in area of Dibuny - Pesochny near Saint Petersburg. Russia, March 4, 2017

Close up of crumpled surface of snow-white crust fungus (Plicatura nivea)(?) in area of Dibuny - Pesochny near Saint Petersburg. Russia, March 4, 2017

Very thin white corticioid mushrooms snow-white crust (Plicatura nivea)(?) on a tree 2 meters from the ground in area of Dibuny - Pesochny near Saint Petersburg. Russia, March 4, 2017

Corticioid mushrooms Plicatura nivea on logs in Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

Texture of corticioid fungus Plicatura nivea on a log in Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

Close-up of corticioid fungus Plicatura nivea on a log in Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

Corticioid mushrooms Plicatura nivea on a cut surface of a log in Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

Corticioid mushrooms Plicatura nivea with a slug on a cut surface of a log in Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

Mushrooms Plicaturopsis crispa together with Plicatura nivea on a log in Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

Large area covered by corticioid fungus Plicatura nivea on a log in Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

Texture of large area covered by corticioid fungus Plicatura nivea on a log in Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

Round patch of corticioid fungus Plicatura nivea on a log in Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

Soft edge of corticioid fungus Plicatura nivea on a log Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

Close-up of soft edge of corticioid fungus Plicatura nivea on a log in Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

Growth of corticioid fungus Plicatura nivea on a log in Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

Young mushrooms Plicatura nivea on a log in Aleksandrovsky (Alexander) Park in Pushkin (former Tsarskoe Selo) near Saint Petersburg, Russia, October 10, 2025

AI-generated summary of observations

Observations of Plicatura nivea in Leningrad Oblast and north-western Russia revealed a thin white corticioid mushroom with a snow-white crust. In the area of Dibuny-Pesochny near Saint Petersburg, the fungus was found on March 4, 2017. The surface of the fungus appeared crumpled under close observation. The fungus was observed growing on trees, specifically 2 meters from the ground, suggesting it can thrive in various elevations. The specimens were characterized by their very thin and white appearance, forming a snow-white crust. These observations provide insight into the growth habits and physical characteristics of Plicatura nivea in this region, highlighting its presence in the area near Saint Petersburg. The specific location and date suggest that the fungus may be active during early spring in this region.

Comments

• Search of mushroom species for given keywords "Plicatura nivea" was done through catalogueoflife.org.
• Attributes of the species were taken from catalogueoflife.org.

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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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