On concrete fence
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.
Doesn't look right for hoffmanniana (though most colonies I see have been walked upon).
I would have said A. caesiocinerea. Maybe.
Hi Alan, more of a query than a counter-argument - it was on a concrete fence rather than nutrient-rich acidic rock (which I've always associated A. caesiocinerea with)
Yes, I got this wrong. Apologies. This morning I stopped by a wall that has a lot of hoffmanniana on its concrete capping, and it looked just like your photographs!
After posting my revision last night I thought more about your material being on concrete and was indeed troubled - my reason for stopping at the wall.
So to be clear for anyone else looking at this Observation:
I withdraw my identification of Aspicilia caesiocinerea and agree with the original identification of A. contorta subsp. hoffmanniana.
Thanks Alan - the benefits of not being walked on! :)
Lat/Lng: 51.6, -9.1
OS grid ref: SK1519