Lecanora poliophaea (Wahlenb.) Ach.
Common on nutrient-enriched coastal rocks, mainly in the north and west. Often found with Lecania aipospila but occupying humid and more moist areas
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