Bitter oyster mushrooms (Panellus stipticus) in Sosnovka Park. Saint Petersburg, Russia, August 30, 2016
ul. Zhaka Dyuklo, 67, Sankt-Peterburg, Russia, 194214Synonyms: Agaricus betulinus, Agaricus farinaceus, Agaricus flabelliformis, Agaricus lateralis, Agaricus semipetiolatus, Agaricus stipticus, Crepidopus stipticus, Lentinus farinaceus, Lentinus stipticus, Merulius stipticus, Panellus farinaceus, Panus farinaceus, Panus stipticus, Paxillus lateralis, Pleurotus stipticus, Pocillaria stiptica, Rhipidium stipticum.
Common name: bitter oysterling.
Russian name: Panellius vyazhushchiy.
Extract from Wikipedia article: Panellus stipticus, commonly known as the bitter oyster, the astringent panus, the luminescent panellus, or the stiptic fungus, is a species of fungus in the family Mycenaceae, and the type species of the genus Panellus. A common and widely distributed species, it is found in Asia, Australia, Europe, and North America, where it grows in groups or dense overlapping clusters on the logs, stumps, and trunks of deciduous trees, especially beech, oak, and birch. During the development of the fruit bodies, the mushrooms start out as tiny white knobs, which, over a period of one to three months, develop into fan- or kidney-shaped caps that measure up to 3 cm (1.2 in) broad. The caps are orange-yellow to brownish, and attached to the decaying wood by short stubby stalks that are connected off-center or on the side of the caps. The fungus was given its current scientific name in 1879, but has been known by many names since French mycologist Jean Bulliard first described it as Agaricus stypticus in 1783. Molecular phylogenetic analysis revealed P. stipticus to have a close genetic relationship with members of the genus Mycena.
Panellus stipticus is a species of fungus that grows on deciduous trees, particularly birch and alder. In St. Petersburg, Leningrad Oblast, and north-western Russia, it typically fruits from August to November, forming small, yellowish-brown to brownish-yellow caps with wavy or lobed margins. The fungus is relatively common in the region, found in moist, shaded areas with rich soil, such as forest edges, parks, and river valleys. Its mycelium decomposes organic matter, contributing to nutrient cycling in these ecosystems.
Bitter oyster mushrooms (Panellus stipticus) in Sosnovka Park. Saint Petersburg, Russia, August 30, 2016ul. Zhaka Dyuklo, 67, Sankt-Peterburg, Russia, 194214
Bitter oyster mushrooms (Panellus stipticus) on a tree stump near Lisiy Nos, west from Saint Petersburg. Russia, September 12, 2016Primorskoye sh., g. Sankt-Peterburg, Russia, 197755
Caps of bitter oyster mushrooms (Panellus stipticus) near Lisiy Nos, west from Saint Petersburg. Russia, September 12, 2016Primorskoye sh., g. Sankt-Peterburg, Russia, 197755
Bitter oyster mushrooms (Panellus stipticus) south-west from Dibuny - Pesochnyi, near Saint Petersburg. Russia, September 14, 2016Unnamed Road, g. Sankt-Peterburg, Russia, 197758
Bitter oyster mushrooms (Panellus stipticus) on a willow stump in bushes in Lavriki, north from Saint Petersburg. Russia, March 14, 2017sh. v Lavriki, 13, Lavriki, Leningradskaya oblast', Russia, 188662
Bitter oyster mushrooms (Panellus stipticus) showing gills on a willow stump in Lavriki, north from Saint Petersburg. Russia, March 14, 2017sh. v Lavriki, 13, Lavriki, Leningradskaya oblast', Russia, 188662
Bitter oyster mushroom (Panellus stipticus) taken from Lavriki, north from Saint Petersburg. Russia, March 14, 2017pr. Raevskogo, 24, Sankt-Peterburg, Russia, 194064
Bitter oyster mushrooms (Panellus stipticus) near Lisiy Nos, west from Saint Petersburg. Russia, April 24, 2017Primorskoye sh., g. Sankt-Peterburg, Russia, 197755
Bitter oysterling mushrooms (Panellus stipticus) in Sosnovka Park. Saint Petersburg, Russia, August 21, 2017Severnyy Prospekt, 26к1, St Petersburg, Russia, 194295
Gills of bitter oysterling mushrooms (Panellus stipticus) in Sosnovka Park. Saint Petersburg, Russia, August 21, 2017Severnyy Prospekt, 26к1, St Petersburg, Russia, 194295
Bitter oysterling mushrooms (Panellus stipticus) on a mossy log between Oselki and Toksovo, north from Saint Petersburg. Russia, August 13, 2024улица Гагарина, Токсовское городское поселение, Всеволожский район, Ленинградская область, Северо-Западный федеральный округ, 188664, Россия
Caps of bitter oysterling mushrooms (Panellus stipticus) on a mossy log between Oselki and Toksovo, north from Saint Petersburg. Russia, August 13, 2024улица Гагарина, Токсовское городское поселение, Всеволожский район, Ленинградская область, Северо-Западный федеральный округ, 188664, РоссияObservations of Panellus stipticus in Leningrad Oblast and north-western Russia revealed its presence in various locations, including Sosnovka Park, near Lisiy Nos, and between Oselki and Toksovo. The fungus was found growing on tree stumps, willow stumps, and mossy logs from August to September and again in March and April. In 2016, it was observed in Sosnovka Park on August 30 and near Lisiy Nos on September 12. In 2017, it was found in Lavriki on March 14 and near Lisiy Nos on April 24. Further observations were made in Sosnovka Park on August 21, 2017, and between Oselki and Toksovo on August 13, 2024. The fungus displayed typical characteristics, including bitter-tasting caps and visible gills. Its growth patterns and habitats suggest it is widespread in the region, thriving in various environments.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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