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.
All year round.
Particularly associated with Ash.
Widespread and quite common, especially in western and northern Britain.
Fairly frequent in Leicestershire and Rutland.
Leicestershire & Rutland Map
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