Woodland Treats

I think this is White Brain fungus but it could also be a Crystal Brain. The latter contains nodules of pure white Calcium oxalate. I can see a couple of white nodules but am not sure whether there should be more for it to be Crystal Brain. Another fungus - very fine white filaments - appears to have colonised the surface of the White/Crystal Brain and, as a special bonus, there is a black slime mould looking a bit like a blackberry.