On old teak bench in Kew Gardens
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.
Since this can't be confirmed from the photo, I thought there had to be a reason for your certainty!
Info here for anyone interested:
Indeed Nigel! And I wouldn't have identified it in a million years! We were shown the lichen by Sandra Bell who works at Kew with all aspects of wildlife in the gardens.
Lat/Lng: 51.4829, -0.2953
OS grid ref: TQ184773