Orange Slime Mould

Probably Lycogala epidendrum, wolf's milk slime mould.  The orange fruiting bodies (aethalia, not sporangia) were up to a centimetre or so across.

It must be the season for this species: I came across it in three separate places during my walk, in each case it was growing on decaying wood.

Photos taken in the Wilderness, Whiteknights Park, Reading University grounds, Reading, UK, on 2010-04-11.