Fungi Outer Hebrides

Family: Arthoniaceae

Arthonia radiata (Pers.) Ach.

Type: Crustose

Immersed, pale grey to whitish thallus with black apothecia, variable in shape but usually irregularly stellate. Found on nutrient rich smooth bark and twigs, often on Ash (Fraxinus excelsior)

Christine Johnson

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