Golden jelly fungus (Tremella mesenterica) parasitizing on rosy crust mushrooms (Peniophora incarnata) in Udelny Park. Saint Petersburg, Russia, February 28, 2017
pr. Ispytateley, 2А, Sankt-Peterburg, Russia, 197343Synonyms: 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.
Tremella mesenterica is a jelly-like fungus that grows on decaying wood, particularly on deciduous trees. In St. Petersburg and Leningrad Oblast, it has been found in urban parks and forests, often on birch and alder trees. In north-western Russia, it is commonly encountered in moist, temperate forests, typically fruiting from June to October. The fungus forms translucent, gelatinous lobes that are 3-10 cm in diameter, with a yellowish or brownish tint. It is widely distributed in the region and can be found on various substrates, including logs, stumps, and branches.
Golden jelly fungus (Tremella mesenterica) parasitizing on rosy crust mushrooms (Peniophora incarnata) in Udelny Park. Saint Petersburg, Russia, February 28, 2017pr. Ispytateley, 2А, Sankt-Peterburg, Russia, 197343
Golden jelly fungus (Tremella mesenterica)(?) in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017Severnyy pr., 26к1, Sankt-Peterburg, Russia, 194295
Yellow brain fungus (Tremella mesenterica) near Pesochnaya, north-west from Saint Petersburg. Russia, July 23, 2017Zaprudnaya ul., Pesochnyy, Sankt-Peterburg, Russia, 197758
Yellow brain fungus (Tremella mesenterica) on a tree near Pesochnaya, north-west from Saint Petersburg. Russia, July 23, 2017Zaprudnaya ul., Pesochnyy, Sankt-Peterburg, Russia, 197758
Yellow brain fungus (Tremella mesenterica) north from 3-rd South Pond on Elagin Island. Saint Petersburg, Russia, October 7, 2017Central Park Гриль, Елагин остров, 4, Санкт-Петербу́рг, Saint Petersburg 197110, Russia
Emerging yellow brain fungus (Tremella mesenterica) on a fallen twig in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, May 13, 2019Doroga K Shalashu V.i. Lenina, Sankt-Peterburg, Russia, 197701
Yellow jelly fungus (Tremella mesenterica) in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, May 13, 2019Doroga K Shalashu V.i. Lenina, Sankt-Peterburg, Russia, 197701
Yellow brain fungus (Tremella mesenterica) on a fallen twig in Tarkhovka near Sestroretsk. West from Saint Petersburg, Russia, May 13, 2019Doroga K Shalashu V.i. Lenina, Sankt-Peterburg, Russia, 197701
Yellow brain fungus (Tremella mesenterica) on a dry tree on Orekhovaya Gora Hill in Duderhof Heights, south from Saint Petersburg. Russia, May 9, 2021Ulitsa Orekhovaya, 13, Кавелахта, Ленинградская, Russia, 198325Observations of Tremella mesenterica were recorded in various locations across Leningrad Oblast and north-western Russia. In Udelny Park, Saint Petersburg, the fungus was found parasitizing on Peniophora incarnata in February 2017. Similar sightings were reported in Sosnovka Park in March 2017, although identification was uncertain. The fungus was also spotted near Pesochnaya, north-west of Saint Petersburg, in July 2017, growing on trees and in the surrounding area. Further observations were made on Elagin Island in October 2017, and in Tarkhovka near Sestroretsk in May 2019, where it was found emerging on fallen twigs and growing on dry trees. Additional sightings occurred in Duderhof Heights, south of Saint Petersburg, in May 2021, with the fungus growing on a dry tree on Orekhovaya Gora Hill. The fungus was consistently identified as Tremella mesenterica, also known as yellow brain or golden jelly fungus.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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