Ramalina subfarinacea (Nyl. ex Cromb.) Nyl.
With a spreading holdfast and divided branches, it has a bushy appearance and can form dense swards. Common on exposed coastal rocks
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