Lecanora chlarotera observed on a twig on an oak tree.
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 have decided not to challange this, but it doesn't look entirely typical, and microscopic confirmation of L. chlarotera is often needed in any case.
Lat/Lng: 52.3926, -2.3555
OS grid ref: SO759772