Leproplaca obliterans

About

Leproplaca obliterans is a species of rock-dwelling, crustose lichen-forming fungus in the family Teloschistaceae. First described by William Nylander in 1874, the lichen forms small orange crusts with yellowish orange soralia on shaded, moist siliceous rock, especially overhanging granite. It is found across much of Europe and has also been reported from Southwest Asia, North America, and Australia.

Summary from Wikipedia