Hypholoma fasciculare, Sulphur Tuft. This common fungus is found on dead wood, logs and tree stumps. It can also appear to be growing in grass, but will be attached to dead tree roots below the soil. It typically grows in large clumps. When young the caps are a pale yellow (the colour of sulphur) but within a few days they deteriorate and become dark brown to black. Underneath the gills have a dull grey look. The stipe is also sulphur yellow in contrast to the dark gills. The clumps are about 18cm high, cap diameter 3-6cm. The fungus is not edible and very bitter.