jakerman's picture

Unknown foliose lichen and yellow fungus

Observed: 18th December 2012 By: jakermanjakerman’s reputation in Fungi and Lichensjakerman’s reputation in Fungi and Lichens

Found on fallen mature beech twig - looks like the yellow fungus/lichen could be associated with the foliose lichen?


Caution: Do NOT use iSpot to identify fungi to eat!

Some fungi are very poisonous so a mistaken ID could have serious consequences.

Species interactions

No interactions present.


pf339's picture

Parmelia species

Cannot remove my earlier suggestion but now agree with synangium's identification and notes.

AlanS's picture

"Yellow fungus"

I must not add it as an ID above, as it will trump the Parmelia ID.

It is also a lichen. I was thinking it might be Candelariella xanthostigma, but looking at photo 2 at high magnification, I see tiny green areoles (islands of thallus), producing bright yellow soredia at their edges.

It is Caloplaca flavocitrina - better known as a species on walls, but it readily grows on damp bark, often in very small patches as is the case here.