Encrusting cushion-like fungus on dead broadleaf tree.
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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I am sure this is not Dichomitus campestris. As you say it should have a dark edge. I will post a photo. I have very little literature on these resupinate fungi but I think Datronia mollis is more likely.
Datronia mollis appears next to Dichomitus campestris in my book (Jordan, Encyclopedia, 2004) but it describes it as leathery with a brown upper surface so I didn't consider it. But looking around further I can see your point. The cushion appearance is confusing me. Also seems slightly warty. So not sure. Will try and take a better look when I'm back there Sun. But D. campestris was a bit of a long shot. Suggestion greatly appreciated. Thanks, Paul
Took another look at this yesterday and tore off a small sample. Nothing conclusive. Can confirm entirely resupinate, no sign of dark margin (D. campestris). Sample was very tightly attached but peeling away attached wood there is no sign of any dark leathery surface anywhere including where attached. Texture not downy, firm but slightly springy when pressed like an india rubber. Expresses water when damp (after rain) and seems to bruise to a light tan. Suspected the cushion shapes might be following the contours of the wood below but this is not the case.
No sign of colour changes that would indicate D.campestris. Datronia mollis looks much more likely. Thanks flaxton, Paul
Lat/Lng: 50.9163, -0.1489
OS grid ref: TQ302146