This is on a north facing dry stone wall (millstone grit geology)
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.
Thanks Alan. I've made a note about Lecidea being split up.I've a couple of others that I think my be Porpidia which I'll post up though won't attempt species as I don't have a microscope!
Indeed more than a year since I named this P. crustulata. In the intervening time I have got to know the crustose species a little bit better. I am now more confident of the ID than when I first made it.
Still best confirmed with a microscope though.
Lat/Lng: 53.7085, -2.0677
OS grid ref: SD956235
Exposed area at abotu 700 ft altitude