Kalbographa

Kalbographa is a genus of lichen-forming fungi in the family Graphidaceae. These lichens form thin, grey-white to pale yellow-olive crusts on tree bark and are distinguished by their striking bright orange to brick-red fruiting bodies that create sharp black slits against the surface. The genus has a pantropical distribution, growing on shaded tree trunks and large branches of mature trees in humid forests, where their brightly pigmented discs are believed to provide protection from sunlight and their presence serves as an indicator of intact, closed-canopy forest....read more on Wikipedia.