Flavoplaca limonia

Flavoplaca limonia is a species of saxicolous (rock-dwelling), crustose lichen in the family Teloschistaceae. It was first formally described as a new species in 1994 by lichenologists Pier Luigi Nimis and Josef Poelt. Ulf Arup and colleagues transferred the taxon to the genus Flavoplaca in 2013, following a molecular phylogenetics-based restructuring of the family Teloschistaceae. Initially thought to be a southern European species, it has since been shown to have a broader distribution, having been reported from Morocco, Denmark, and Sweden. It can be differentiated from the similar-looking species Flavoplaca citrina by having larger diaspores, which are blastidia rather than soredia, averaging 85±54 μm in size....read more on Wikipedia.