Typically in circular colonies, thallus whitish to pale grey, warted and areolate, soralia lacking in this subspecies; apothecia usually abundant, red- to dark brown.
On concrete and calcareous rocks.
All year round.
Widespread and generally common.
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