Dead tree

These black root-like structures are termed rhizomorphs or "bootlaces".  Often found in the soil and under bark of colonised trees.  This species is a parasite and eventually kills trees. These fungi are thought to be the largest  organisms on the planet because genetically pure mycelium can cover several acres of land.

The stalked structure arises from an "egg" and the head is covered in a thick slimy spore mass that smells of putrid rotting matter.  Insects are attracted by the smell and disperse the spores.