Corticioid mushroom Antrodia xantha on a damaged pine tree near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, March 14, 2017
Dachnaya ul., Leningradskaya oblast', Russia, 188664Synonyms: Amyloporia lenis, Amyloporia xantha, Amyloporiella flava, Antrodia flava, Chaetoporellus greschikii, Daedalea xantha, Physisporus flavus, Physisporus xanthus, Polyporus flavus, Polyporus selectus, Polyporus sulphurellus, Polyporus xanthus, Poria greschikii, Poria selecta, Poria sulphurella, Poria xantha.
Common name: yellow crust.
Russian name: Antrodiya zolotistaya.
Antrodia xantha is a species of fungus in the family Fomitopsidaceae. It is a rare and poorly known polypore that grows on deciduous trees, particularly birch and alder. In St. Petersburg and Leningrad Oblast, it has been found on fallen logs and stumps in urban parks and forests. In north-western Russia, it is considered a rare species, with scattered records from the Murmansk, Arkhangelsk, and Vologda regions, where it typically grows on birch and other deciduous trees in old-growth forests.
Corticioid mushroom Antrodia xantha on a damaged pine tree near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, March 14, 2017Dachnaya ul., Leningradskaya oblast', Russia, 188664
White corticioid mushroom Antrodia xantha on a damaged pine tree near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, March 14, 2017Dachnaya ul., Leningradskaya oblast', Russia, 188664
Close up of corticioid mushroom Antrodia xantha on a damaged pine tree near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, March 14, 2017Dachnaya ul., Leningradskaya oblast', Russia, 188664
Corticioid mushroom Antrodia xantha on a pine tree in swampy area of Sosnovka Park. Saint Petersburg, Russia, April 8, 2017Unnamed Road, Sankt-Peterburg, Russia
Close up of corticioid mushroom Antrodia xantha on a pine tree in swampy area of Sosnovka Park. Saint Petersburg, Russia, April 8, 2017Unnamed Road, Sankt-Peterburg, Russia
Yellow crust fungus (Antrodia xantha)(?) on a cut surface of a log in Lembolovo, 40 miles north from Saint Petersburg. Russia, July 5, 2017Unnamed Road, Leningradskaya oblast', Russia
Yellow crust fungus (Antrodia xantha)(?) on a cut surface of a barkless log in Lembolovo, 40 miles north from Saint Petersburg. Russia, July 5, 2017Unnamed Road, Leningradskaya oblast', Russia
Yellow crust fungus (Antrodia xantha) on a log in Petiayarvi, 50 miles north from Saint Petersburg. Russia, August 30, 2017Unnamed Road, Leningradskaya oblast', Russia, 188732
Yellow crust fungus (Antrodia xantha) on a tall stump near Shchuchye Lake in Komarovo, west from Saint Petersburg. Russia, September 6, 2017Ozornaya Ulitsa, 45, Russia, 197733
Yellow crust mushrooms (Antrodia xantha) on a tall stump near Shchuchye Lake in Komarovo, west from Saint Petersburg. Russia, September 6, 2017Ozornaya Ulitsa, 45, Russia, 197733
Texture of yellow crust fungus (Antrodia xantha) on a tall stump near Shchuchye Lake in Komarovo, west from Saint Petersburg. Russia, September 6, 2017Ozornaya Ulitsa, 45, Russia, 197733
Yellow crust fungus (Antrodia xantha) on a barkless tall stump of a spruce tree near Shchuchye Lake in Komarovo, west from Saint Petersburg. Russia, September 6, 2017Ozornaya Ulitsa, 45, Russia, 197733
Yellow crust mushrooms (Antrodia xantha) in Blizhnie Dubki area near Lisiy Nos, west from Saint Petersburg. Russia, September 21, 2017Polyanskaya Doroga, Sankt-Peterburg, Russia, 197755
Yellow crust fungus (Antrodia xantha) on a cut surface of a spruce(?) near Orekhovo, 45 miles north from Saint Petersburg. Russia, August 30, 2018Unnamed Road, Vaskelovo, Leningradskaya oblast', Russia, 188731Observations of Antrodia xantha in Leningrad Oblast and north-western Russia reveal its presence on various substrates, including damaged pine trees, logs, and stumps. The fungus was found near Kavgolovskoe Lake, Sosnovka Park, and other locations around Saint Petersburg, often in swampy areas or on cut surfaces of logs. It typically appears as a white or yellow crust, with a rough texture. The observations span several months, from March to September, with sightings in 2017 and 2018. Antrodia xantha was also found on different types of trees, including pine, spruce, and possibly others. The fungus seems to thrive on damaged or decaying wood, suggesting a saprotrophic lifestyle. Overall, the observations highlight the widespread presence of Antrodia xantha in the region, with a preference for specific substrates and environments.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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