Pinkgill mushrooms Entoloma undatum on roadside near Kavgolovskoe Lake south from Oselki, 8 miles north from Saint Petersburg. Russia, July 25, 2017
Unnamed Road, Oselki, Leningradskaya oblast', Russia, 188665Synonyms: Agaricus undatus, Claudopus sericeonitidus, Clitopilus undatus, Clitopilus viarum, Eccilia sericeonitida, Eccilia undata, Entoloma sericeonitidum, Nolanea proletaria, Paraeccilia sericeonitida, Rhodophyllus undatus.
Russian name: Entoloma volnistaya.
Entoloma undatum is a species of fungus that grows in clusters on the ground in deciduous and mixed forests. In St. Petersburg and Leningrad Oblast, it typically fruits from July to September, often in association with birch, aspen, and willow trees. The cap is 1-4 cm in diameter, convex to flat, and grayish-brown to brown with a wavy margin. The gills are pinkish-gray to pinkish-brown, and the stem is slender, 1-3 cm long, and white to grayish-brown. In north-western Russia, Entoloma undatum is considered a rare species, but it can be found in suitable habitats, including forests and woodland edges, where it grows in a variety of soil types.
Pinkgill mushrooms Entoloma undatum on roadside near Kavgolovskoe Lake south from Oselki, 8 miles north from Saint Petersburg. Russia, July 25, 2017Unnamed Road, Oselki, Leningradskaya oblast', Russia, 188665
Cap of a pinkgill mushroom Entoloma undatum in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 29, 2017Politekhnicheskaya ul., 29, Sankt-Peterburg, Russia, 195251
Gills of a pinkgill mushroom Entoloma undatum under a large tree in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 29, 2017Politekhnicheskaya ul., 29, Sankt-Peterburg, Russia, 195251
Group of a pinkgill mushroom Entoloma undatum on a lawn under a large tree in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 29, 2017Pamyatnik Politekhnikam, Sankt-Peterburg, Russia, 195251
Pinkgill mushrooms Entoloma undatum(?) on roadside near Lisiy Nos, west from Saint Petersburg. Russia, September 1, 2018Primorskoye Shosse, Sankt-Peterburg, Russia
Pinkgill mushrooms Entoloma undatum near Lisiy Nos, west from Saint Petersburg. Russia, September 1, 2018Primorskoye Shosse, Sankt-Peterburg, Russia, 197755
Cap of a pinkgill mushroom Entoloma undatum near Lisiy Nos, west from Saint Petersburg. Russia, September 6, 2018Saint Petersburg, Russia, 197755
Gills of a pinkgill mushroom Entoloma undatum near Lisiy Nos, west from Saint Petersburg. Russia, September 6, 2018Saint Petersburg, Russia, 197755In Leningrad Oblast and north-western Russia, observations of the fungus Entoloma undatum were recorded in various locations. The species was found on a roadside near Kavgolovskoe Lake, south of Oselki, and in the Gardens of Polytechnic Institute in Saint Petersburg. The mushrooms were observed growing under large trees and on lawns, with caps and gills visible. Similar observations were made near Lisiy Nos, west of Saint Petersburg, on multiple occasions in 2017 and 2018. The species was found to grow in groups and individually, with distinctive cap and gill structures. Observations took place in July and September, suggesting a potential summer and early fall growth period for Entoloma undatum in the region. The sightings were documented through photographs, providing visual records of the species' morphology and habitat preferences.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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