On limestone in coastal location. Confirmation of id appreciated as its early days with lichens for me!
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.
It has lobular edges rather than the foliose habit of X. parietina. Makes me think very firmly of Caloplaca.
Thanks, Alan. Comments like that are immensely useful.
Thanks again, to all who have commented. Alan, I enjoyed your description of 'tardily fertile', an eloquent turn of phrase that somehow fits perfectly!
Lat/Lng: 51.3, -3.4
OS grid ref: ST0565