Big sheath mushroom (Volvopluteus gloiocephalus, Volvariella speciosa) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 25, 2017
Unnamed Road, Sankt-Peterburg, RussiaSynonyms: Agaricus gloiocephalus, Agaricus pubescens, Agaricus speciosus, Amanita incarnata, Amanita speciosa, Pluteus speciosus, Pseudofarinaceus gloiocephalus, Volvaria gloiocephala, Volvaria speciosa, Volvariella gloiocephala, Volvariella speciosa, Volvariopsis gloiocephala, Volvariopsis speciosa.
Common name: big sheath mushroom.
Russian names: Volvariella krasivaya, Volvopliutey slizistogolovyy.
Extract from Wikipedia article: Volvopluteus gloiocephalus, commonly known as the big sheath mushroom, rose-gilled grisette, or stubble rosegill, is a species of mushroom in the family Pluteaceae. For most of the 20th century it has been known under the names Volvariella gloiocephala or Volvariella speciosa, but recent molecular studies have placed it as the type species of the genus Volvopluteus, newly created in 2011. The cap of this mushroom is about 5–15 cm (2–6 in) in diameter, varies from white to grey or grey-brown, and is markedly sticky when fresh. The gills start out as white but they soon turn pink. The stipe is white and has a sack-like volva at the base. Microscopical features and DNA sequence data are of great importance for separating V. gloiocephalus from related species. V. gloiocephalus is a saprotrophic fungus that grows on grassy fields and accumulations of organic matter like compost or woodchips piles. It has been reported from all continents except Antarctica.
Volvopluteus gloiocephalus is a species of mushroom-forming fungus that grows on the ground in fields, meadows, and forests. In St. Petersburg, Leningrad Oblast, and north-western Russia, it typically fruits from July to October, preferring moist habitats with rich soil. The cap is 3-8 cm in diameter, globose to hemispherical, and often wrinkled or wavy, with a yellow-brown to reddish-brown color. The gills are free, crowded, and pale yellow, while the stem is 4-10 cm tall and 0.5-1.5 cm thick, white or yellowish, and often covered with fine hairs. It is considered a rare species in the region, but can be found in suitable habitats, including parks, gardens, and woodland edges.
Big sheath mushroom (Volvopluteus gloiocephalus, Volvariella speciosa) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 25, 2017Unnamed Road, Sankt-Peterburg, Russia
Dissected big sheath mushroom (Volvopluteus gloiocephalus, Volvariella speciosa) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 25, 2017Unnamed Road, Sankt-Peterburg, Russia
Big sheath mushroom (Volvopluteus gloiocephalus) on Proletarsky Prospect in Dibuny, north-west from Saint Petersburg. Russia, September 18, 2017Proletarskiy Prospekt, 1, Pesochny, Sankt-Peterburg, Russia, 197758Observations of Volvopluteus gloiocephalus in Leningrad Oblast and north-western Russia reveal that the fungus grows in various environments. On June 25, 2017, it was found on a tree utilization site in Sosnovka Park, Saint Petersburg, where it formed big sheath mushrooms. Dissection of the mushroom revealed its internal structure. Additionally, the species was observed on Proletarsky Prospect in Dibuny, north-west from Saint Petersburg, on September 18, 2017. The fungus appears to thrive in urban areas, including parks and tree utilization sites, suggesting adaptability to human-altered environments. These sightings provide insight into the habitat preferences and growth patterns of Volvopluteus gloiocephalus in the region. The species' presence in both summer and early fall indicates a potentially extended fruiting period in north-western Russia.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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