Moldaganda

Lecanora inaurata 

Parmotrema cetratum

This foliose lichen grows on trees and occasionally rock in subtropical and warm-temperate regions of Asia, Africa, Australia, and the Americas. It has a loosely attached, foliose thallus with irregular, dentate lobes surrounded with marginal cilia. The upper surface is reticulate pale green-gray to mineral gray, and the lower surface is glossy black and densely rhizinate. It produces substipate, brown-disked, perforated apothecia. P. cetratum can be distinguished from similar species by its thallus chemistry (the presence of salazinic acid) and lack or soredia.

images: source