Arthonia radiata


A smooth, greyish white crusted lichen with embedded black areas that are irregularly shaped and typically 1 to 2 mm in diameter.


On nutrient rich, smooth bark and twigs on a variety of species but a characteristic species on Ash.

When to see it

All year round.

Life History

Particularly associated with Ash.

UK Status

Widespread and quite common, especially in western and northern Britain.

VC55 Status

Fairly frequent in Leicestershire and Rutland.

Leicestershire & Rutland Map

UK Map