green crustose lichen with black fruting bodies ('fruit gums'). on either side is lecanora chlarotera. perhaps could be buellia punctata?
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.
Just to be clear, Buellia punctata is a synonym of Amandinea punctata. But I agree that the photograph is probably Lecidella elaeochroma.
Lat/Lng: 53.33272, -6.24997
OS grid ref: SG171901
Busy urban road along Grand Canal, Dublin