Birch polypore mushroom Piptoporus betulinus (bracket fungus Fomitopsis betulina, Russian name Trutovik) in Sosnovka Park. Saint Petersburg, Russia, August 25, 2016Synonyms: Agarico-pulpa pseudoagaricon, Boletus betulinus, Boletus suberosus, Fomes betulinus, Piptoporus betulinus, Placodes betulinus, Polyporus betulinus, Ungularia betulina, Ungulina betulina.
Common names: birch polypore, razorstrop fungus.
Russian names: Trutovik beriozovyy, Piptoporus berezovyy, Berezovaya gubka.
Extract from Wikipedia article: Fomitopsis betulina (previously Piptoporus betulinus), commonly known as the birch polypore, birch bracket, or razor strop, is a common bracket fungus and, as the name suggests, grows almost exclusively on birch trees. The brackets burst out from the bark of the tree, and these fruit bodies can last for more than a year. Technically, it is an edible mushroom, with a strong, pleasant "mushroomy" odor but a bitter taste. The velvety cut surface of the fruit body was traditionally used as a strop for finishing the edges on razors, and also as a mounting material for insect collections.
Fomitopsis betulina is a species of bracket fungus that grows on deciduous trees, particularly birch. In St. Petersburg, Leningrad Oblast, and north-western Russia, it is commonly found on birch trees, especially Betula pendula and Betula pubescens. The fungus produces annual to biennial fruiting bodies, typically 5-20 cm in diameter, with a brown to greyish-brown cap and white to yellowish pores. It is widely distributed in the region, often occurring in urban parks, forests, and along roadsides. Fomitopsis betulina is considered a saprotrophic fungus, playing a role in decomposing organic matter and contributing to nutrient cycling in the ecosystem.
Birch polypore mushroom Piptoporus betulinus (bracket fungus Fomitopsis betulina, Russian name Trutovik) in Sosnovka Park. Saint Petersburg, Russia, August 25, 2016
Birch polypore mushroom Piptoporus betulinus (bracket fungus Fomitopsis betulina, Russian name Trutovik) in Oselki, south from Saint Petersburg, Russia, August 29, 2016
Unnamed Road, Oselki, Leningradskaya oblast', Russia, 188665
Birch polypore mushroom Fomitopsis betulina (Piptoporus betulinus) in area of Dibuny - Pesochny near Saint Petersburg. Russia, March 4, 2017Unnamed Road, g. Sankt-Peterburg, Russia, 197758
Birch polypore mushroom Fomitopsis betulina (Piptoporus betulinus) in Sosnovka Park. Saint Petersburg, Russia, March 20, 2017Unnamed Road, Sankt-Peterburg, Russia, 194064
Birch polypore mushroom Piptoporus betulinus (bracket fungus Fomitopsis betulina) in area of Blizhnie Dubki near Lisiy Nos, west from Saint Petersburg. Russia, April 7, 2017Polyanskaya dor., g. Sankt-Peterburg, Russia, 197755Observations of the fungus Fomitopsis betulina in Leningrad Oblast and north-western Russia reveal its presence on birch trees in various locations. In Sosnovka Park, Saint Petersburg, it was spotted on August 25, 2016, and again on March 20, 2017. The fungus was also found in Oselki, south of Saint Petersburg, on August 29, 2016, and in the area of Dibuny - Pesochny near Saint Petersburg on March 4, 2017. Additionally, it was observed in the area of Blizhnie Dubki near Lisiy Nos, west of Saint Petersburg, on April 7, 2017. The fungus appears to be widespread in the region, with sightings recorded in different seasons, including summer and spring. Its hosts are primarily birch trees, where it grows as a bracket fungus, also known as Piptoporus betulinus or Trutovik in Russian.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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