On siliceous maritime rock in the company of other foliose species, including Anaptychia runcinata, Xanthoria aureola, Parmotrema perlatum, Parmelia saxatilis and a Xanthoparmelia sp.
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.
for confirming it. Glad to have finally found this.
Lat/Lng: 52.9169632, -4.6223218
OS grid ref: SH237387