Yellow and grey foliose lichens.
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.
Nice clear photo's and scale which help's with identification.
Thank you, I used a USB microscope to enlarge the detail.
Lat/Lng: 52.658, 1.0358
OS grid ref: TG054110
Lichen found on dead twig of an apple tree in a Norfolk garden. Approximately 25 metres from the main road.