Nevesia

Nevesia is a single-species fungal genus in the family Pannariaceae. It contains the species Nevesia sampaiana, a lichen. The lichen forms small, chestnut-brown scales over a conspicuous blue-black base, and reproduces mainly by powdery vegetative propagules (soredia) rather than spores. It is found in western Europe, where it grows on the bark of mature trees in humid woodlands....read more on Wikipedia.