Fungi Outer Hebrides

Family: Lecanoraceae

Lecanora jamesii J.R. Laundon

Type: Crustose

Predominantly a western species in sheltered moist areas on smooth-barked trees. Not uncommon. A member of the Lecanora polytropa group. the presence of clusters of large oxalate crystals in the thallus help distinguish it from other similar sterile crusts

Smith, C.W. et al. editors (2009) The Lichens of Great Britain and Ireland
Dobson, F.S. (2018) Lichens: an Illustrated Guide to the British and Irish Species