Bulbous Honey Fungus
The Common Honey Fungus - Armillaria Mellea - is the one fungus which as gardeners we definitely don't want to find!
Originally all the various forms of Honey Fungus shared a common name. A. gallica wasn't recognised as a separate species until the late 1980's.
Today there are at least five recognised species, including the rare Marsh Honey Fungus which we found at Ffrwd Fen last month and which is one of the Lost & Found species.
Unlike A. mellea A. gallica is only weakly parasitic, although in this case it makes little difference as these fruiting bodies were growing from the trunk of a fallen (wind blown) Oak.
It seems to have enjoyed a number of different names, I was unable to find it in my Funga Nordica until I realised it was listed as Armillaria lutea.