Growing on a south-facing oolitic limestone dry-stone 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.
To me, the chewing gum lichens are those that grow on pavement and which look like discarded and trodden on chewing gum to the uninitiated.
I don't associate A. calcarea with such situations, but maybe this is a matter of geography? The classic 'chewing gum' lichen is Lecanora muralis, with Aspicilia contorta increasingly abundant on paving in many areas, and also, locally, Lecanora campestris. Protoblastenia rupestris may count as another.
Thanks for clarifying that Alan. I will try to find some proper chewing gum lichens!
Lat/Lng: 51.36101, -2.35258
OS grid ref: ST755624