Physcia austrocaesia

About

Physcia austrocaesia is a species of foliose lichen in the family Physciaceae. First described as a new species in 2011, it is found in Australia and New Zealand, where it grows on both on bark and on rocks. This species is closely related to the widespread Physcia caesia, but it can be distinguished by its broader lobes and the presence of aipolic acid, an uncommon secondary metabolite.

Summary from Wikipedia