The thallus is variably pale grey to grey-green or even red-tinged. It has large, completely immersed perithecia (to 0.8mm diam) which leave conspicuous pits in the substrate when they decay.
On suitable limestone habitats, including man-made structures .
All year round.
Common and widespread in Britain.
Fairly frequent in Leicestershire and Rutland.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015