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.
I found this Lichen on an old south facing stone wall.
No ideas from me! It certainly resembles http://goo.gl/URh3E.
I will look out for it when I'm next in Malham.
Nor from me - I'm out of my comfort zone with limestone species, though I'll soon be learning.....
Lat/Lng: 53.101, -1.2696
OS grid ref: SK490562