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Fungi: Basidiomycota: Tremellomycetes: Tremellales: Tremellaceae: Tremella mesenterica Retz., 1769

Tremella mesenterica – Yellow brain

Synonyms: Exidia candida, Helvella mesenterica, Hormomyces aurantiacus, Tremella albida, Tremella brasiliensis, Tremella candida, Tremella lutescens.

Common name: yellow brain.

Russian names: Drozhalka oranzhevaya, Tremella plenchataya, Draglya, Drozhalka oranzhenaya.

Extract from Wikipedia article: Tremella mesenterica (common names include yellow brain, golden jelly fungus, yellow trembler, and witches' butter) is a common jelly fungus in the Tremellaceae family of the Agaricomycotina. It is most frequently found on dead but attached and on recently fallen branches, especially of angiosperms, as a parasite of wood decay fungi in the genus Peniophora. The gelatinous, orange-yellow fruit body of the fungus, which can grow up to 7.5 cm (3.0 in) diameter, has a convoluted or lobed surface that is greasy or slimy when damp. It grows in crevices in bark, appearing during rainy weather. Within a few days after rain it dries into a thin film or shriveled mass capable of reviving after subsequent rain. This fungus occurs widely in deciduous and mixed forests and is widely distributed in temperate and tropical regions that include Africa, Asia, Australia, Europe, North and South America. Although considered bland and flavorless, the fungus is edible. Tremella mesenterica produces carbohydrates that are attracting research interest because of their various biological activities.

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

Golden jelly fungus (<B>Tremella mesenterica</B>) parasitizing on rosy crust mushrooms (Peniophora incarnata) in Udelny Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-02-28.htm">February 28, 2017</A>
LinkGolden jelly fungus (Tremella mesenterica) parasitizing on rosy crust mushrooms (Peniophora incarnata) in Udelny Park. Saint Petersburg, Russia, February 28, 2017
Location on mapspr. Ispytateley, 2А, Sankt-Peterburg, Russia, 197343
Golden jelly fungus (<B>Tremella mesenterica</B>)(?) in Sosnovka Park. Saint Petersburg, Russia, <A HREF="../date-en/2017-03-13.htm">March 13, 2017</A>
LinkGolden jelly fungus (Tremella mesenterica)(?) in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017
Location on mapsSevernyy pr., 26к1, Sankt-Peterburg, Russia, 194295
Yellow brain fungus (<B>Tremella mesenterica</B>) near Pesochnaya, north-west from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-23.htm">July 23, 2017</A>
LinkYellow brain fungus (Tremella mesenterica) near Pesochnaya, north-west from Saint Petersburg. Russia, July 23, 2017
Location on mapsZaprudnaya ul., Pesochnyy, Sankt-Peterburg, Russia, 197758
Yellow brain fungus (<B>Tremella mesenterica</B>) on a tree near Pesochnaya, north-west from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-23.htm">July 23, 2017</A>
LinkYellow brain fungus (Tremella mesenterica) on a tree near Pesochnaya, north-west from Saint Petersburg. Russia, July 23, 2017
Location on mapsZaprudnaya ul., Pesochnyy, Sankt-Peterburg, Russia, 197758
Yellow brain fungus (<B>Tremella mesenterica</B>) north from 3-rd South Pond on Elagin Island. Saint Petersburg, Russia, <A HREF="../date-en/2017-10-07.htm">October 7, 2017</A>
LinkYellow brain fungus (Tremella mesenterica) north from 3-rd South Pond on Elagin Island. Saint Petersburg, Russia, October 7, 2017
Location on mapsCentral Park Гриль, Елагин остров, 4, Санкт-Петербу́рг, Saint Petersburg 197110, Russia
Emerging yellow brain fungus (<B>Tremella mesenterica</B>) on a fallen twig in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, <A HREF="../date-en/2019-05-13.htm">May 13, 2019</A>
LinkEmerging yellow brain fungus (Tremella mesenterica) on a fallen twig in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, May 13, 2019
Location on mapsDoroga K Shalashu V.i. Lenina, Sankt-Peterburg, Russia, 197701
Yellow jelly fungus (<B>Tremella mesenterica</B>) in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, <A HREF="../date-en/2019-05-13.htm">May 13, 2019</A>
LinkYellow jelly fungus (Tremella mesenterica) in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, May 13, 2019
Location on mapsDoroga K Shalashu V.i. Lenina, Sankt-Peterburg, Russia, 197701
Yellow brain fungus (<B>Tremella mesenterica</B>) on a fallen twig in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, <A HREF="../date-en/2019-05-13.htm">May 13, 2019</A>
LinkYellow brain fungus (Tremella mesenterica) on a fallen twig in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, May 13, 2019
Location on mapsDoroga K Shalashu V.i. Lenina, Sankt-Peterburg, Russia, 197701
Yellow brain fungus (<B>Tremella mesenterica</B>) on a dry tree on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, <A HREF="../date-en/2021-05-09.htm">May 9, 2021</A>
LinkYellow brain fungus (Tremella mesenterica) on a dry tree on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021
Location on mapsUlitsa Orekhovaya, 13, Кавелахта, Ленинградская, Russia, 198325

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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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