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Fungi: Basidiomycota: Agaricomycetes: Russulales: Russulaceae: Lactarius deterrimus Gröger, 1968

Lactarius deterrimus – False saffron milkcap

Synonym: Lactarius deliciosus.

Common name: false saffron milkcap.

Russian names: Ryzhik elovyy, Elovik.

Extract from Wikipedia article: Lactarius deterrimus, also known as false saffron milkcap or orange milkcap, is a species of fungus in the family Russulaceae. The fungus produces medium-sized fruit bodies (mushrooms) with orangish caps up to 12 cm (4.7 in) wide that develop green spots in old age or if injured. Its orange-coloured latex stains maroon within 30 minutes. Lactarius deterrimus is a mycorrhizal fungus that associates with Norway spruce and bearberry. The species is distributed in Europe, but has also found in parts of Asia. A visually similar species in the United States and Mexico is not closely related to the European species. Fruit bodies appear between late June and November, usually in spruce forests. Although the fungus is edible—like all Lactarius mushrooms from the section Deliciosi—its taste is often bitter, and it is not highly valued. The fruit bodies are used as source of food for the larvae of several insect species. Lactarius deterrimus can be distinguished from similar Lactarius species by difference in the mycorrhizal host or latex colour.

AI-generated description

Lactarius deterrimus is a milk cap fungus that grows in association with spruce trees. In St. Petersburg, Leningrad Oblast, and north-western Russia, it is commonly found in coniferous forests, particularly in areas dominated by Norway spruce. The fungus typically fruits from late summer to early autumn, producing medium-sized caps that are 4-8 cm in diameter, with a reddish-brown to dark brown color and a velvety texture. The gills are crowded and produce a white milk that stains yellow or brown when injured. Lactarius deterrimus is considered edible and is highly valued for its flavor and aroma. It is widely distributed throughout the region, including in urban parks and forests near St. Petersburg.

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

Gills of false saffron milkcap mushroom (<B>Lactarius deterrimus</B>, Russian name Ryshik) in Okhtinsky Park in Toksovo, 8 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2013-09-13.htm">September 13, 2013</A>
LinkGills of false saffron milkcap mushroom (Lactarius deterrimus, Russian name Ryshik) in Okhtinsky Park in Toksovo, 8 miles north from Saint Petersburg. Russia, September 13, 2013
Location on mapsGlavnaya, 107, Syargi, Leningradskaya oblast', Russia, 188664
False saffron milkcap mushroom (<B>Lactarius deterrimus</B>) in Okhtinsky Park in Toksovo, 8 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2013-09-13.htm">September 13, 2013</A>
LinkFalse saffron milkcap mushroom (Lactarius deterrimus) in Okhtinsky Park in Toksovo, 8 miles north from Saint Petersburg. Russia, September 13, 2013
Location on mapsGlavnaya, 107, Syargi, Leningrad Oblast, Russia, 188660
False saffron milkcap mushroom (<B>Lactarius deterrimus</B>, Russian name Ryshik) on roadside near Kavgolovskoe Lake, 12 miles north from Saint Petersburg. Russia, <A HREF="../date-en/2013-09-20.htm">September 20, 2013</A>
LinkFalse saffron milkcap mushroom (Lactarius deterrimus, Russian name Ryshik) on roadside near Kavgolovskoe Lake, 12 miles north from Saint Petersburg. Russia, September 20, 2013
Location on mapsСовхозная улица, 1А, Kavgolovo, Leningrad Oblast, Russia
Orange milkcap mushroom <B>Lactarius deterrimus</B> on roadside near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2016-07-24.htm">July 24, 2016</A>
LinkOrange milkcap mushroom Lactarius deterrimus on roadside near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 24, 2016
Location on mapsDachnaya ul., Leningradskaya oblast', Russia, 188664
False saffron milkcap mushrooms (<B>Lactarius deterrimus</B>, Russian name Ryshik) on roadside near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2016-07-24.htm">July 24, 2016</A>
LinkFalse saffron milkcap mushrooms (Lactarius deterrimus, Russian name Ryshik) on roadside near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 24, 2016
Location on mapsDachnaya ul., Leningradskaya oblast', Russia, 188664
Orange milkcap mushrooms (<B>Lactarius deterrimus</B>, Russian name Ryzhik) on roadside near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2016-07-24.htm">July 24, 2016</A>
LinkOrange milkcap mushrooms (Lactarius deterrimus, Russian name Ryzhik) on roadside near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 24, 2016
Location on mapsDachnaya ul., Leningradskaya oblast', Russia, 188664
Milkcap mushrooms (<B>Lactarius deterrimus</B>, Russian name Ryzhik) near Dibuny, north-west from Saint Petersburg, Russia, <A HREF="../date-en/2016-08-24.htm">August 24, 2016</A>
LinkMilkcap mushrooms (Lactarius deterrimus, Russian name Ryzhik) near Dibuny, north-west from Saint Petersburg, Russia, August 24, 2016
Milkcap mushroom (<B>Lactarius deterrimus</B>, Russian name Ryzhik) near Dibuny, west from Saint Petersburg. Russia, <A HREF="../date-en/2016-09-07.htm">September 7, 2016</A>
LinkMilkcap mushroom (Lactarius deterrimus, Russian name Ryzhik) near Dibuny, west from Saint Petersburg. Russia, September 7, 2016
Location on mapsZapadniy Skorostnoy Diameter, g. Sankt-Peterburg, Russia, 197758
Milkcap mushrooms (<B>Lactarius deterrimus</B>, Russian name Ryzhik) south-west from Dibuny - Pesochnyi, near Saint Petersburg. Russia, <A HREF="../date-en/2016-09-14.htm">September 14, 2016</A>
LinkMilkcap mushrooms (Lactarius deterrimus, Russian name Ryzhik) south-west from Dibuny - Pesochnyi, near Saint Petersburg. Russia, September 14, 2016
Location on mapsUnnamed Road, Pesochnyy, g. Sankt-Peterburg, Russia
Milkcap mushroom (<B>Lactarius deterrimus</B>, Russian name Ryzhik) with a marsh orchid on roadside near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-14.htm">July 14, 2017</A>
LinkMilkcap mushroom (Lactarius deterrimus, Russian name Ryzhik) with a marsh orchid on roadside near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 14, 2017
False saffron milkcap mushrooms (<B>Lactarius deterrimus</B>) in spruce forest in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, <A HREF="../date-en/2017-08-15.htm">August 15, 2017</A>
LinkFalse saffron milkcap mushrooms (Lactarius deterrimus) in spruce forest in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, August 15, 2017
Location on mapsUnnamed Road, Sankt-Peterburg, Russia, 197701
False saffron milkcap mushroom (<B>Lactarius deterrimus</B>, Russian name Ryshik) west from Kavgolovskoe Lake near Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-09-01.htm">September 1, 2017</A>
LinkFalse saffron milkcap mushroom (Lactarius deterrimus, Russian name Ryshik) west from Kavgolovskoe Lake near Toksovo, north from Saint Petersburg. Russia, September 1, 2017
Location on mapsDachnaya Ulitsa, Leningradskaya oblast', Russia, 188664
False saffron milkcap mushroom (<B>Lactarius deterrimus</B>, Russian name Ryshik) near Lisiy Nos. West from Saint Petersburg, Russia, <A HREF="../date-en/2018-08-26.htm">August 26, 2018</A>
LinkFalse saffron milkcap mushroom (Lactarius deterrimus, Russian name Ryshik) near Lisiy Nos. West from Saint Petersburg, Russia, August 26, 2018
Location on mapsПриродный заказник «Северное побережье Невской губы», Primorskoye Shosse, Sankt-Peterburg, Russia, 197755
Milkcap mushrooms <B>Lactarius deterrimus</B> near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2018-09-05.htm">September 5, 2018</A>
LinkMilkcap mushrooms Lactarius deterrimus near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, September 5, 2018
Location on mapsUnnamed Road, Leningradskaya oblast', Russia, 188664
Underside of a false saffron milkcap mushroom (<B>Lactarius deterrimus</B>, Russian name Ryshik) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2018-09-05.htm">September 5, 2018</A>
LinkUnderside of a false saffron milkcap mushroom (Lactarius deterrimus, Russian name Ryshik) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, September 5, 2018
Location on mapsLeningrad Oblast, Russia, 188667
False saffron milkcap mushrooms (<B>Lactarius deterrimus</B>, Russian name Ryshik) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2018-09-05.htm">September 5, 2018</A>
LinkFalse saffron milkcap mushrooms (Lactarius deterrimus, Russian name Ryshik) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, September 5, 2018
Location on mapsLeningrad Oblast, Russia, 188667

AI-generated summary of observations

Observations of Lactarius deterrimus in Leningrad Oblast and north-western Russia show that the fungus grows in various locations, including Okhtinsky Park, near Kavgolovskoe Lake, and in spruce forests. The mushrooms were found on roadsides, in forests, and near lakes, suggesting a wide range of habitats. The observations were made over several years, from 2013 to 2018, with multiple sightings in the same locations, indicating that the fungus is common in the area. The mushrooms were often found in groups, with some observations showing multiple individuals growing together. The gills of the mushroom were also observed, and the underside of the cap was noted in one observation. Overall, the observations suggest that Lactarius deterrimus is a relatively common species in the region, found in a variety of environments.

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Acknowledgements

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

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