Looks 'fleshy'. Using hand lens can see that lobes are curled over and back.
Powdery masses of soredia on tips of some lobes.
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Some fungi are very poisonous so a mistaken ID could have serious consequences.
No interactions present.
Thanks for your help with ID
The two common Hypogymnia species can be difficult to tell apart. However, the soralia at the tips seem reasonably capitate, and the lobes are very convex in cross section and minutely "rugulose" (normally flatter, smoother and shinier in H. physodes). On balance, I agree with th2688's original identification.
Lat/Lng: 51.94601, -1.19098
OS grid ref: SP557278