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Golden Jelly Fungus, aka Witches' Butter

Tremella sp. (most likely Tremella mesenterica)


Yellow jelly fungus found on a rotting tree branch. I'm confident it's a Tremella species and most likely Tremella mesenterica, a common jelly fungus in the Tremellaceae family. This fungus has a variety of common names including Golden Jelly Fungus, Yellow Brain, Yellow Trembler, and Witches' Butter. The fruit body had an irregular shape and appeared to be breaking through the bark, although not growing on another fungus species as some jelly fungus species are prone to do, or so I read. These specimens looked to be very fresh. A smooth surface that was very soft and gelatin-like to touch, and the lobes were a translucent, bright yellow, although some appeared to be colorless. I found this image online, and it looks exactly like my specimen - If you think my ID for this spotting is incorrect, please let me know. Any and all suggestions welcomed. PS: Polydesmida sp. millipede shown in the 5th photo.


This spotting was found on a rotting log in a well-shaded area amongst dense undergrowth, in the Cumberland State Forest in Sydney's northwest. Larger trees such as blackbutts, blue gums and grey gums in this area, and hoop pines found nearby. Recent rains these past few weeks has greened vegetation up considerably, particularly after such a long drought. Fungus is flourishing. Here's some park info:


So I don't forget what I've looked at so far..... Tremella mesenterica (yellow brain, golden jelly fungus, yellow trembler, witches' butter), often confused with Tremella aurantia, Dacrymyces chrysospermus, Dacryopinax spathularia (spatula jelly), Calocera cornea (small stagshorn), Calocera sinensis. Research in progress.

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Neil Ross
Spotted by
Neil Ross

Sydney, NSW, Australia

Spotted on Mar 27, 2019
Submitted on Apr 7, 2019

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