Bleeding oak crust mushrooms (Stereum gausapatum) on an oak stump near Lisiy Nos, south from Saint Petersburg. Russia, February 18, 2017
Primorskoye sh., g. Sankt-Peterburg, Russia, 197755Synonyms: Cladoderris gausapata, Haematostereum gausapatum, Stereum cristulatum, Stereum hirsutum, Stereum quercinum, Stereum spadiceum, Thelephora gausapata.
Common name: bleeding oak crust.
Russian name: Stereum dubovyy.
Stereum gausapatum is a crustose fungus that grows on dead wood, characterized by its resupinate to effused-reflexed habit and smooth, waxy to hairy hymenial surface. In St. Petersburg, Leningrad Oblast, and north-western Russia, it has been found growing on various deciduous tree species, including birch, alder, and willow, typically in moist, shaded areas. The fungus is relatively common in the region, with fruiting bodies often appearing in late summer to early autumn.
Bleeding oak crust mushrooms (Stereum gausapatum) on an oak stump near Lisiy Nos, south from Saint Petersburg. Russia, February 18, 2017Primorskoye sh., g. Sankt-Peterburg, Russia, 197755
Bleeding oak crust mushrooms (Stereum gausapatum) on an oak scar near Lisiy Nos, west from Saint Petersburg. Russia, March 3, 2017Polyanskaya dor., g. Sankt-Peterburg, Russia, 197755
Bleeding oak crust mushrooms (Stereum gausapatum) near Lisiy Nos, west from Saint Petersburg. Russia, March 3, 2017Polyanskaya dor., g. Sankt-Peterburg, Russia, 197755
Bleeding oak crust mushrooms (Stereum gausapatum) in cracks of bark in area of Nizhniye Dubki near Lisiy Nos, west from Saint Petersburg. Russia, March 3, 2017Primorskoye sh., g. Sankt-Peterburg, Russia, 197755
Bleeding oak crust mushrooms (Stereum gausapatum) collected from area of Blizhnie Dubki near Lisiy Nos, west from Saint Petersburg. Russia, March 3, 2017
Bleeding oak crust fungus (Stereum gausapatum)(?) on a log near Lisiy Nos. West from Saint Petersburg, Russia, August 23, 2017Polyanskaya Doroga, Sankt-Peterburg, Russia, 197755Observations of Stereum gausapatum in Leningrad Oblast and north-western Russia reveal that the fungus grows on oak stumps, scars, and in cracks of bark. It was found near Lisiy Nos, south and west from Saint Petersburg, on multiple occasions between February and August 2017. The fungus was observed on oak stumps and logs, as well as in areas with dense vegetation such as Nizhniye Dubki and Blizhnie Dubki. The observations suggest that Stereum gausapatum is relatively common in the region and can be found throughout the year, with sightings recorded in winter (February) and summer (August). The fungus appears to thrive in a variety of environments, from open areas to dense vegetation, and can grow on both living and dead oak trees. Multiple collections were made in the area, confirming its presence.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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