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Fungi: Basidiomycota: Agaricomycetes: Russulales: Russulaceae: Lactarius tabidus Fr., 1838

Lactarius tabidus – Birch milkcap

Synonyms: Lactarius mitissimus, Lactarius subdulcis, Lactarius theiogalus, Lactifluus tabidus.

Common name: birch milkcap.

Russian names: Mlechnik chakhlyy, Gruzd chakhlyy, Gruzd nezhnyy, Mlechnik nezhnyy.

Extract from Wikipedia article: Lactarius tabidus (also Lactarius theiogalus, and formerly Lactarius chrysorheus and Lactarius hepaticus), commonly known as the Birch Milkcap, is an inedible mushroom of the genus Lactarius. It can be found in North America and Europe, and grows at the base of pine in Autumn. Its white milk stains fabric a sulphur yellow, from which its specific epithet derives.

AI-generated description

Lactarius tabidus is a small to medium-sized mushroom with a dull brown to greyish-brown cap, often with a depressed center, and pale yellow to cream-colored gills. It has a mild to slightly sweet smell and taste. In St. Petersburg, Leningrad Oblast, and north-western Russia, Lactarius tabidus is commonly found in coniferous and mixed forests, typically growing on the ground in association with spruce, pine, or birch trees. Fruiting bodies usually appear from late summer to early autumn, often in moist areas with rich soil.

Photos of this mushroom from the area of St. Petersburg, Russia

Birch milkcap mushrooms (<B>Lactarius tabidus</B>, Russian name Gorkushka) in Sosnovka Park in Saint Petersburg. Russia, <A HREF="../date-en/2010-06-24.htm">June 24, 2010</A>
LinkBirch milkcap mushrooms (Lactarius tabidus, Russian name Gorkushka) in Sosnovka Park in Saint Petersburg. Russia, June 24, 2010
Birch milkcap mushrooms (<B>Lactarius tabidus</B>(?), Russian name Gorkushka) in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2016-07-23.htm">July 23, 2016</A>
LinkBirch milkcap mushrooms (Lactarius tabidus(?), Russian name Gorkushka) in Sosnovka Park. Saint Petersburg, Russia, July 23, 2016
Location on mapsUnnamed Road, Sankt-Peterburg, Russia, 194291
Birch milkcap mushrooms (<B>Lactarius tabidus</B>(?)) in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2016-07-23.htm">July 23, 2016</A>
LinkBirch milkcap mushrooms (Lactarius tabidus(?)) in Sosnovka Park. Saint Petersburg, Russia, July 23, 2016
Location on mapsUnnamed Road, Sankt-Peterburg, Russia, 194291
Birch milkcap mushrooms (<B>Lactarius tabidus</B>) in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2016-08-25.htm">August 25, 2016</A>
LinkBirch milkcap mushrooms (Lactarius tabidus) in Sosnovka Park. Saint Petersburg, Russia, August 25, 2016
Birch milkcap mushrooms (<B>Lactarius tabidus</B>, Lactarius theiogalus) in swampy area in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2016-09-06.htm">September 6, 2016</A>
LinkBirch milkcap mushrooms (Lactarius tabidus, Lactarius theiogalus) in swampy area in Sosnovka Park. Saint Petersburg, Russia, September 6, 2016
Location on mapsUnnamed Road, Sankt-Peterburg, Russia
Birch milkcap mushrooms (<B>Lactarius tabidus</B>, Lactarius theiogalus) taken from Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2016-10-24.htm">October 24, 2016</A>
LinkBirch milkcap mushrooms (Lactarius tabidus, Lactarius theiogalus) taken from Sosnovka Park. Saint Petersburg, Russia, October 24, 2016
Birch milkcap mushrooms (<B>Lactarius tabidus</B>) on peat soil in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-06-22.htm">June 22, 2017</A>
LinkBirch milkcap mushrooms (Lactarius tabidus) on peat soil in Sosnovka Park. Saint Petersburg, Russia, June 22, 2017
Location on mapsSevernyy pr., 24к1, Sankt-Peterburg, Russia, 194295
Birch milkcap mushrooms (<B>Lactarius tabidus</B>) in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-06-22.htm">June 22, 2017</A>
LinkBirch milkcap mushrooms (Lactarius tabidus) in Sosnovka Park. Saint Petersburg, Russia, June 22, 2017
Location on mapsSevernyy pr., 24к1, Sankt-Peterburg, Russia, 194295
Birch milkcap mushroom (<B>Lactarius tabidus</B>) in swampy part in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-06-29.htm">June 29, 2017</A>
LinkBirch milkcap mushroom (Lactarius tabidus) in swampy part in Sosnovka Park. Saint Petersburg, Russia, June 29, 2017
Location on mapsSevernyy pr., 26, Sankt-Peterburg, Russia, 194295
Birch milkcap mushrooms (<B>Lactarius tabidus</B>) in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-06-30.htm">June 30, 2017</A>
LinkBirch milkcap mushrooms (Lactarius tabidus) in Sosnovka Park. Saint Petersburg, Russia, June 30, 2017
Location on mapsSevernyy pr., 20к2, Sankt-Peterburg, Russia, 194295
Birch milkcap mushrooms (<B>Lactarius tabidus</B>) in swampy area in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-07-06.htm">July 6, 2017</A>
LinkBirch milkcap mushrooms (Lactarius tabidus) in swampy area in Sosnovka Park. Saint Petersburg, Russia, July 6, 2017
Location on mapsUnnamed Road, Sankt-Peterburg, Russia
Group of birch milkcap mushrooms (<B>Lactarius tabidus</B>) in swampy area in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-07-06.htm">July 6, 2017</A>
LinkGroup of birch milkcap mushrooms (Lactarius tabidus) in swampy area in Sosnovka Park. Saint Petersburg, Russia, July 6, 2017
Location on mapsUnnamed Road, Sankt-Peterburg, Russia
Birch milkcap mushrooms (<B>Lactarius tabidus</B>) in Dibuny, near Saint Petersburg. Russia, <A HREF="../date-en/2017-08-20.htm">August 20, 2017</A>
LinkBirch milkcap mushrooms (Lactarius tabidus) in Dibuny, near Saint Petersburg. Russia, August 20, 2017
Location on mapsUnnamed Road, Sankt-Peterburg, Russia, 197758
Birch milkcap mushrooms (<B>Lactarius tabidus</B>) near Dibuny, north-west from Saint Petersburg. Russia, <A HREF="../date-en/2017-08-20.htm">August 20, 2017</A>
LinkBirch milkcap mushrooms (Lactarius tabidus) near Dibuny, north-west from Saint Petersburg. Russia, August 20, 2017
Location on mapsUnnamed Road, Sankt-Peterburg, Russia, 197758
Birch milkcap mushrooms (<B>Lactarius tabidus</B>) in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-09-16.htm">September 16, 2017</A>
LinkBirch milkcap mushrooms (Lactarius tabidus) in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
Location on mapsUlitsa Zhaka Dyuklo, 67, St Petersburg, Russia, 194214
Group of birch milkcap mushrooms (<B>Lactarius tabidus</B>) in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-09-16.htm">September 16, 2017</A>
LinkGroup of birch milkcap mushrooms (Lactarius tabidus) in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017
Location on mapsProspekt Toreza, 96, St Petersburg, Russia, 194017

AI-generated summary of observations

Observations of Lactarius tabidus in Leningrad Oblast and north-western Russia show that the fungus is commonly found in Sosnovka Park in Saint Petersburg. The mushrooms were observed growing on peat soil and in swampy areas from June to September, with multiple sightings in 2016 and 2017. They were also found near Dibuny, north-west of Saint Petersburg, in August 2017. The fungus was often found in groups, with some observations noting the presence of other species, such as Lactarius theiogalus. The consistent sightings over several years suggest that Lactarius tabidus is a relatively common species in the region, particularly in areas with suitable habitat like peat soil and swampy terrain. Repeated observations in Sosnovka Park indicate a stable population of the fungus in this area.

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Links

Acknowledgements

Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.

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