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.
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, 197343
Golden jelly fungus (Tremella mesenterica)(?) in Sosnovka Park. Saint Petersburg, Russia, March 13, 2017 Severnyy pr., 26к1, Sankt-Peterburg, Russia, 194295
Yellow brain fungus (Tremella mesenterica) near Pesochnaya, north-west from Saint Petersburg. Russia, July 23, 2017 Zaprudnaya ul., Pesochnyy, Sankt-Peterburg, Russia, 197758
Yellow brain fungus (Tremella mesenterica) on a tree near Pesochnaya, north-west from Saint Petersburg. Russia, July 23, 2017 Zaprudnaya 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, 2017 Central 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, 2019 Doroga 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, 2019 Doroga 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, 2019 Doroga 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, 2021 Ulitsa Orekhovaya, 13, Кавелахта, Ленинградская, Russia, 198325
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