SULPHUR TUFT

Clustered and still growing on old dead wood is this group of Suphut Tuft fungus toadstools (Hypholoma fasciculare)  

They are an even brighter yellow than my camera shows.

These are just the fruiting bodies, the equivalent of flowers for a fungus.  Deep inside, the white mycelial threads are invisible from the outside of the log but are tidily recycling it and at the same time entertaining us with a bit of colour at this misty time of year.