Mycobilimbia parvilobulosa

Mycobilimbia parvilobulosa is a species of corticolous (bark-dwelling) crustose lichen in the family Ramalinaceae. Found in southern Spain, it was first described in 2003. This small organism grows primarily on the bark of oak trees in undisturbed woodland habitats, especially near the base of trees where it often covers mosses. It can be recognized by its whitish to greenish-grey crust-like body with distinctive small, scalloped or finger-like lobes, and its dark brown fruiting bodies. The species is considered rare, having been found in only a small number of forest locations during ecological surveys....read more on Wikipedia.