On a tree
No identification made yet.
No interactions present.
Any chance of some details as to what it was on - rock or tree, acidic/basic stone, tree species etc as that can be vital when trying to identify lichens
it's on a tree - no idea which species
It could be a Physconia
The picture seems to support your identification but the focus is such that it is difficult to distinguish what is happening on the inner lobes.
The species apparently prefers nutrient enriched sites and appears greenish when wet, although the green shoorts in the picture are more likely to be a moss or liverwort aren't they?. Nutrient enriched in this case means bird droppings!
Thanks for your help, I'll try and get some better shots next time, the light intensity was really low on this day and the camera wouldn't take any close-ups
With Best Wishes
Lat/Lng: 52.2, -3.4
OS grid ref: SO0560