Cadal Bells

From Temuairian Botany Book:

In the forest of Shinewood, fallen trees can be found covered in clusters of tiny mushrooms. The songs lilting in the air of Shinewoods tell that when a mighty tree falls, the faeries of the woods gather and ring a melancholy tune of mourning on tiny faerie bells.
These bells can be seen as the caps of these mushrooms, which are said by the Fae to soothe the restless spirit of the fallen wood in order to prevent the tree rising again as a Cursed Tree.
Mushrooms touched by faerie magic are doubly dangerous. Great care should be used when handling these fungal blooms.