Myriospora myochroa

Myriospora myochroa is a species of crustose lichen in the family Acarosporaceae. It forms distinctive patches that range from whitish-grey to dark brown on silicate rock surfaces. First discovered in Sweden in 2003, this lichen grows in diverse environments from coastal areas affected by sea spray to mountain regions above 2,400 metres in elevation. It prefers sheltered, moisture-retaining habitats such as undercut rock faces and overhangs that provide stable humidity conditions. With a broad Eurasian distribution, M. myochroa has been documented across multiple European countries including Finland, France, Germany, Italy, and Russia, as well as parts of Asia....read more on Wikipedia.