Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
No interactions present.
I am almost sure this is Hypoxylon rather than a lichen. Someone may be able to suggest which species.
Thank you Nigel. I will change the description after your suggestion, not to confuse other users.
Then this is a fungus colonizing dead wood only? I could find it only on this tree trunk.
Sorry, I don't know much about Hypoxylon (or most non-lichenised fungi). A quick search suggests it can get a foothold on drought-stressed trees.
Lat/Lng: 47.3753, 8.4556