Lecanora microloba

Lecanora microloba is a species of crustose and areolate lichen in the family Lecanoraceae, formally described in 2010. This lichen is characterized by its distinctive flat areoles that either remain isolated or form small rosette-like structures, with minute lobed margins that give the species its name. Currently known only from two localities in the Polish Tatra Mountains and more recently reported from Ukraine, it grows specifically on mylonitized granite rock intrusions in the highest vegetation belt of the Carpathians. The lichen contains several chemical compounds including gyrophoric acid, usnic acid, and zeorin, which produce characteristic colour reactions in chemical spot tests. In its natural habitat, L. microloba grows alongside several other lichen species and serves as a host for the parasitic lichenicolous fungus Muellerella erratica....read more on Wikipedia.