A small tufted species of the upper tidal zone and just beyond in the splash zone. Similar to Lichina pygmaea but smaller and with the branches rounded

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
Ahti et al. editors (2012) Nordic Lichen Flora, Volume 3: Cyanolichens