Hericium coralloides.
The coral tooth fungus (Hericium coralloides) has been described as our most beautiful species of fungus. It is a member of the group called 'tooth fungi', because their fruit bodies produce tooth-like spines These spines serve the same function (producing spores) as the more familiar gills found on mushrooms The coral tooth fungus is pale whitish in colour, and has branches from which long, fine spines hang down like icicles. When young, the species has a more 'knobbly' appearance and is said to resemble a coral. Original public domain image from Flickr