Substrate: reservoir wall.
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.
might be mite damage. I have seen mites grazing P. saxatilis and causing very similar colour - might post a photo on my site as comparison with a couple of the fungi that parasitise P. saxatilis.
That would be of great interest to me. Your website is a superb resource and I enthusiastically welcome any additions!
Edit: just noticed the new site format - I like it.
Thanks for the comment about the site. I was about three quarters of the way though all the changes when I began to have a crisis of confidence! Loaded it all this morning and good to have positive feedback already.
I think I'll put the mite damage photos in the lichenicolous fungi section and then link from the Parmelia saxatilis page, as there are a lot of photographs already on the latter page and anyone with a slow internet connection probably already has a voodoo doll of me to which they are adding pins. Could explain the bad leg.
The lichenicolous fungi pages will be the next to be redecorated, and I have quite a lot to add to that section (as indeed I have for the main lichen section). So check for the mite damage pictures in a few days. Probably.
Lat/Lng: 53.655995, -2.4227777
OS grid ref: SD721178