A crust forming lichen with a thin, continuous or cracked-areolate, white to pale blue-grey thallus, rarely tinged orange.
Common on exposed siliceous rocks, pebbles, walls and memorials, rare on worked timber.
All year round.
Widespread and common in 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