This lichen forms a thick greenish or yellow-grey crust. Discs are variable in colour, yellowish to black, grey-pruinose.
Widespread on siliceous rocks and stonework.
All year round.
Widespread and fairly frequent 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