Bleeding Broadleaf Crust fungus (Stereum rugosum mushrooms) on a willow tree in Sosnovka Park. Saint Petersburg, Russia, December 8, 2016
ul. Zhaka Dyuklo, 67, Sankt-Peterburg, Russia, 194214Synonyms: Gymnoderma rugosum, Haematostereum rugosum, Stereofomes stratosus, Stereum aculeatum, Stereum coryli, Stereum stratosum, Thelephora coryli, Thelephora laurocerasi, Thelephora rugosa.
Common name: bleeding broadleaf crust.
Russian name: Stereum morshchinistyy.
Stereum rugosum is a crust fungus that grows on dead wood, characterized by its wavy to wrinkled upper surface and smooth, pale underside. In St. Petersburg, Leningrad Oblast, and north-western Russia, it has been found growing on various tree species, including birch, aspen, and alder, typically in moist, shaded areas with rich soil. The fungus is common in these regions, particularly in late summer to early fall, and can form large, confluent patches on decaying logs and stumps.
Bleeding Broadleaf Crust fungus (Stereum rugosum mushrooms) on a willow tree in Sosnovka Park. Saint Petersburg, Russia, December 8, 2016ul. Zhaka Dyuklo, 67, Sankt-Peterburg, Russia, 194214
Bleeding Broadleaf Crust fungus (Stereum rugosum mushrooms) on a tree in Sosnovka Park. Saint Petersburg, Russia, February 3, 2017
Crust formed by fungus (mushroom) Stereum rugosum(?) on a fallen tree north-west from Verperlud Island near Lisiy Nos, south from Saint Petersburg. Russia, February 18, 201732, Экотропа "У Лукоморья", Лисий Нос, Санкт-Петербург, Северо-Западный федеральный округ, 189645, Россия
Crust fungus (Stereum rugosum(?)) on a log near Lisiy Nos, south from Saint Petersburg. Russia, February 18, 2017Primorskoye sh., g. Sankt-Peterburg, Russia, 197755
Bleeding Broadleaf Crust fungus (Stereum rugosum mushrooms) on a tree in Udelny Park. Saint Petersburg, Russia, February 28, 2017pr. Ispytateley, 2к1А, Sankt-Peterburg, Russia, 197343
Bleeding Broadleaf Crust (Stereum rugosum mushrooms) with some black fungus on a tree in area of Dibuny - Pesochny near Saint Petersburg. Russia, March 4, 2017Zapadniy Skorostnoy Diameter, g. Sankt-Peterburg, Russia, 197758
Bleeding Broadleaf Crust fungus (Stereum rugosum mushrooms) on a tree in area of Dibuny - Pesochny near Saint Petersburg. Russia, March 4, 2017Zapadniy Skorostnoy Diameter, g. Sankt-Peterburg, Russia, 197758
Bleeding Broadleaf Crust fungus (Stereum rugosum) on a tree in area of Dibuny - Pesochny near Saint Petersburg. Russia, March 4, 2017Zapadniy Skorostnoy Diameter, g. Sankt-Peterburg, Russia, 197758
Close up of Bleeding Broadleaf Crust fungus (Stereum rugosum) on a tree in area of Dibuny - Pesochny near Saint Petersburg. Russia, March 4, 2017Zapadniy Skorostnoy Diameter, g. Sankt-Peterburg, Russia, 197758
Bleeding Broadleaf Crust fungus (Stereum rugosum)(?) on a willow in Orekhovo, 40 miles north from Saint Petersburg. Russia, March 18, 2017Unnamed Road, Orekhovo, Leningradskaya oblast', Russia, 188731
Bleeding Broadleaf Crust fungus (Stereum rugosum mushrooms) on a willow in area of an old brick factory between Pesochnaya and Dibuny north-west from Saint Petersburg. Russia, March 26, 2017Zaprudnaya ul., Pesochnyy, g. Sankt-Peterburg, Russia, 197758
Bleeding Broadleaf Crust fungus (Stereum rugosum mushrooms) on a large willow in area of an old brick factory between Pesochnaya and Dibuny north-west from Saint Petersburg. Russia, March 26, 2017Zaprudnaya ul., Pesochnyy, g. Sankt-Peterburg, Russia, 197758
Bleeding Broadleaf Crust fungus (Stereum rugosum mushrooms) in area of Blizhnie Dubki near Lisiy Nos, west from Saint Petersburg. Russia, April 24, 2017Primorskoye sh., g. Sankt-Peterburg, Russia, 197755
Bleeding Broadleaf Crust fungus (Stereum rugosum) near Lisiy Nos, west from Saint Petersburg. Russia, April 24, 2017Polyanskaya dor., g. Sankt-Peterburg, Russia, 197755Observations of Stereum rugosum in Leningrad Oblast and north-western Russia reveal its presence on various trees, including willows, in different locations. The fungus was found in Sosnovka Park, Udelny Park, and other areas near Saint Petersburg, forming crusts on tree trunks and logs. It was also observed on fallen trees and stumps, indicating its ability to grow on decaying wood. The observations span from December 2016 to April 2017, suggesting that the fungus is active during the winter and early spring months. Multiple sightings in areas such as Dibuny - Pesochny and Lisiy Nos demonstrate its widespread presence in the region. The fungus was often found on willow trees, particularly in areas near water, such as Orekhovo and Blizhnie Dubki.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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