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Witch's Butter

Tremella mesenterica

A jelly fungus commonly found on rotting wood as a parasite of crust fungi of the genus Peniophora, seen here parasitizing Turkey Tail,
one of our common bracket (shelf) fungi. Common names include Yellow Brain Fungus, Golden Jelly Fungus and Witch's Butter.

This fungus occurs widely in locations including North America, Australia, Japan and Taiwan. This species is
not considered edible, but a close relative, Snow Fungus, Tremella fuciformis, is commonly used in Chinese cuisine.

CalPhotos lists three species of Tremella in the state. In addition to T. mesenterica are found: T. cinnabarina (similar
ppearance, bright yellow, need more info to distinguish with certainty) and T. foliacea, Brown Witch's Butter.

Tremella: the root is "tremere," to tremble. mesentery refers to a membrane that supports inner organs (peritoneum in vertebrates).

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