Cluster of inkcap (inky cap) mushrooms Coprinopsis romagnesiana(?) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, October 14, 2016
alleya Molodogo Zhenikha, Pavlovsk, g. Sankt-Peterburg, Russia, 196620Synonyms: Coprinus atramentarius, Coprinus romagnesianus.
Common name: Coprin de Romagnesi.
Russian name: Navoznik Romanezi.
Coprinopsis romagnesiana is a species of fungus that belongs to the family Psathyrellaceae. It is characterized by its small to medium-sized cap, typically 1-4 cm in diameter, which is bell-shaped and often has a wrinkled or veined surface. The cap is usually brown or greyish-brown in color, with a darker center. The gills are crowded, free from the stem, and turn black as the spores mature. The stem is slender, typically 2-6 cm long, and has a white or light-colored base.
In St. Petersburg and Leningrad Oblast, Coprinopsis romagnesiana has been found growing in clusters on rich soil, often in wooded areas or near decaying organic matter. It fruits from summer to autumn, with peak activity in August and September. In north-western Russia, the species is considered rare, but it can be found in similar habitats, including deciduous and mixed forests, as well as urban parks and gardens. Local mycological surveys have reported C. romagnesiana in various locations, including the Karelian Isthmus and the Valdai Hills.
Cluster of inkcap (inky cap) mushrooms Coprinopsis romagnesiana(?) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, October 14, 2016alleya Molodogo Zhenikha, Pavlovsk, g. Sankt-Peterburg, Russia, 196620
Coprin de Romagnesi mushrooms (Coprinopsis romagnesiana) near a big oak in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024Берёзовая аллея, Курорт, Сестрорецк, Санкт-Петербург, Северо-Западный федеральный округ, 197706, Россия
Underside of Coprin de Romagnesi mushrooms (Coprinopsis romagnesiana) near an oak in Dubki (The Oaks) Park in Sestroretsk, near Saint Petersburg. Russia, August 7, 2024Берёзовая аллея, Курорт, Сестрорецк, Санкт-Петербург, Северо-Западный федеральный округ, 197706, РоссияObservations of Coprinopsis romagnesiana in Leningrad Oblast and north-western Russia reveal that the fungus tends to grow in clusters, as seen in Pavlovsk Park where a group of inkcap mushrooms were found on October 14, 2016. Similar observations were made in Dubki Park in Sestroretsk, near Saint Petersburg, on August 7, 2024, where the mushrooms were found growing near a large oak tree. The underside of the mushrooms was also observed, providing further insight into their morphology. These sightings suggest that Coprinopsis romagnesiana prefers to grow in association with oak trees and in wooded areas, such as parks. The fungus appears to thrive in the region's climate, with observations made in both autumn and summer months. Further study is needed to fully understand the habitat preferences and distribution of this species.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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