Pale grey foliose lichen growing on drystone wall on east side of Congleton Rd., Mow Cop. Probably in SJ85U, but could be SJ85T.
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 does seem to have the rounded soralia of P. caesia, but a close-up would have made it easier to be sure it isn't the similar but less common P. dubia.
Lat/Lng: 53.1, -2.3
OS grid ref: SJ8657