Family: Lecanoraceae
Lecanora poliophaea (Wahlenb.) Ach.
Type: Crustose
Common on nutrient-enriched coastal rocks, mainly in the north and west. Often found with Lecania aipospila but occupying humid and more moist areas
References:
Smith, C.W. et al. editors (2009) The Lichens of Great Britain and Irelandd
Dobson, F.S. (2018) Lichens: an Illustrated Guide to the British and Irish Species