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
Enter a town or village to see local records
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015