Dyplolabia afzelii

About

Dyplolabia afzelii is a species of corticolous (bark-dwelling), script lichen in the family Graphidaceae. It has a pantropical distribution. The lichen has a thallus with colours ranging from yellow to pale olive buff, dark brownish tan, or grey, characterised by its smooth texture and considerable thickness. Its ascomata are lirelline, often raised from the thallus surface and concealed under a powdery white layer.

Summary from Wikipedia