Lichen on fallen twig
Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
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Sorry, clicked "agree" before I had thought about this one sufficiently.
The very pale lobes made me wonder as the OPAL guide suggests that X. parietina can have grey green as well as yellow orange lobes, similar to X. polycarpa. Lobe size then becomes more important and polycarpa is said to be small and finger like, often almost obscured by the thallus - which does not seem correct here. The key suggests that lobe width would be 2mm or less for polycarpa, but larger than this for parietina. As the fruits of both lichens can be up to 4 mm, my guess is now that the lobes are at least that broad and so it is more likely to be parietina.
I am a beginner myself, so I would wait for another opinion before revising.
Lat/Lng: 52.4, -1.9
OS grid ref: SP0982