Yellow mushroom Bolbitius titubans (Bolbitius vitellinus) in Sosnovka Park. Saint Petersburg, Russia, August 8, 2016
Svetlanovskiy pr., 22, Sankt-Peterburg, Russia, 194223Synonyms: Agaricus boltonii, Agaricus equestris, Agaricus flavidus, Agaricus fragilis, Agaricus luteolus, Agaricus titubans, Agaricus vitellinus, Bolbitius boltonii, Bolbitius flavidus, Bolbitius fragilis, Bolbitius luteolus, Bolbitius variicolor, Bolbitius vitellinus, Cortinarius vitellinus, Mycena fragilis, Mycena variicolor, Pluteolus titubans, Pluteolus vitellinus, Prunulus boltonii, Prunulus titubans.
Common name: yellow fieldcap.
Russian name: Bolbitus zolotistyy.
Extract from Wikipedia article: Bolbitius titubans, also known as Bolbitius vitellinus, is a widespread species of inedible mushroom found in America and Europe. It grows chiefly on dung or heavily fertilized soil, and sometimes on grass.
Bolbitius titubans is a species of fungus that belongs to the family Bolbitiaceae. It is a small to medium-sized mushroom with a bell-shaped cap, typically 1-4 cm in diameter, and a slender stem. The cap is often yellowish-brown to brown, with a smooth or slightly wrinkled surface. In St. Petersburg, Leningrad Oblast, and north-western Russia, Bolbitius titubans has been found growing on dung, soil, and other nutrient-rich substrates, particularly in fields, meadows, and along roadsides. It typically fruits from summer to autumn, often in association with grasses and other vegetation. The fungus is considered widespread but not abundant in the region, with scattered records from various locations, including urban areas and natural habitats.
Yellow mushroom Bolbitius titubans (Bolbitius vitellinus) in Sosnovka Park. Saint Petersburg, Russia, August 8, 2016Svetlanovskiy pr., 22, Sankt-Peterburg, Russia, 194223
Bolbitius titubans mushroom on wood chips in Sosnovka Park. Saint Petersburg, Russia, August 8, 2016Unnamed Road, Sankt-Peterburg, Russia
Some tall and small whitish mushroom, may be Bolbitius titubans in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, August 22, 2016Rozovopavilyonnaya al., Pavlovsk, g. Sankt-Peterburg, Russia
Yellow fieldcap mushrooms (Bolbitius titubans) near a ditch near Dibuny, west from Saint Petersburg. Russia, June 27, 2017Zapadniy Skorostnoy Diameter, Sankt-Peterburg, Russia, 197758
Close up of yellow fieldcap mushrooms (Bolbitius titubans) near Dibuny, west from Saint Petersburg. Russia, June 27, 2017Zapadniy Skorostnoy Diameter, Sankt-Peterburg, Russia, 197758
Yellow fieldcap mushrooms (Bolbitius titubans) near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017Zapadniy Skorostnoy Diameter, Sankt-Peterburg, Russia, 197758
Yellow fieldcap mushrooms (Bolbitius titubans) in Sosnovka Park. Saint Petersburg, Russia, July 20, 2017Tikhoretskiy pr., 25к1, Sankt-Peterburg, Russia, 195427
Yellow fieldcap mushrooms (Bolbitius titubans) on burnt wood in Sosnovka Park. Saint Petersburg, Russia, July 20, 2017Tikhoretskiy pr., 25к1, Sankt-Peterburg, Russia, 195427
Yellow fieldcap mushrooms (Bolbitius titubans) in Kuzmolovo, north from Saint Petersburg. Russia, August 23, 2018Unnamed Road, Leningradskaya oblast', Russia, 188663
Cap of a yellow fieldcap mushroom (Bolbitius titubans) in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024Тарховка, Сестрорецк, Санкт-Петербург, Северо-Западный федеральный округ, 197706, Россия
Yellow fieldcap mushrooms (Bolbitius titubans) in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024Тарховка, Сестрорецк, Санкт-Петербург, Северо-Западный федеральный округ, 197706, Россия
Gills of a yellow fieldcap mushroom (Bolbitius titubans) in Tarkhovka Park, west from Saint Petersburg. Russia, August 2, 2024Тарховка, Сестрорецк, Санкт-Петербург, Северо-Западный федеральный округ, 197706, РоссияObservations of Bolbitius titubans in Leningrad Oblast and north-western Russia reveal its presence in various locations. The fungus was found in Sosnovka Park, Pavlovsk Park, near Dibuny, and Kuzmolovo, indicating a wide distribution. It grew on different substrates, including wood chips, burnt wood, and soil. The mushroom's appearance varied, with some specimens having yellow caps and others appearing whitish. Observations were made during summer months, from June to August, over several years (2016-2024). The fungus was also found in Tarkhovka Park, with detailed observations of its cap and gills. These findings suggest that Bolbitius titubans is a common species in the region, able to thrive in different environments. Its growth habits and appearance were documented through photographs, providing valuable information about this species.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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