One for ID Please

[Teal]

One for ID Please. Not sure what this is, Dacromyces or Tremella? I Favour the latter but I guess it could be something else. Photographed 15/02/11 growing on a gorse bush stem. Forgot to put a scale but its about 15mm accross

[mollisia]

Hello,

this is tremella mesenterica. A little chance is left, that it is Tremella aurantia, but on this twigs in the air, it has to my knowledge always been T. mesenterica.
Those Tremellas are parasites. T. aurantia would parasite Stereum hirsutum, Tremella mesenterica Peniophora spp. So if you see the host nearby, then you can be sure even without microscopy.

best regards,
Andreas

[healfdan]

I would say Tremella mesenterica as this is often found on gorse and is fairly common around the SW London and Surrey Heathlands

[Teal]

Thanks for the answers both. Would I be right then in assuming that this too is the same thing, but older and more folded? I took this in 2006 on (I think) decaying oak and labeled it Tremella mesenterica

[mollisia]

Hello,

this 2nd foto is with certainty Tremella aurantia and NOT Tremella mesenterica. You can see minor differences, as e.g. the bigger and more "crispy" fruitbody and a more orange colour in wet condition. But the important thing are the old fruitbodies of Stereum hirsutum which you can see at the right side of the twig! So this is Tremella aurantiia, which parasizes Stereum spp., whereas your first pciture very probably is Tremella mesenterica, parasiting Peniophora spp.

best regards,
Andreas

[Teal]

Thanks Andreas, I will keep an eye out for the associated Stereum hirsutum next time I come accross either species. So, today has not been wasted as I have learnt something new!!