Description: This crustose species has a white to yellow-grey thallus with abundant blue-black soredia and pruinose discs with a disintegrating rim. It has a coastal distribution growing on north- or east-facing siliceous rocks and overhangs. In Ireland, it is known from Counties Kerry, Cork, Galway and Antrim.

Key Identification Features:

• Told by the presence of blue-black soredia and frosted discs with an eroding rim
• Sea-cliffs on siliceous rocks, below overhanging rock.

Original text submitted by Vince J. Giavarini

Distribution Map from NBN: Lecania baeomma at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Lecania baeomma at iNaturalist World Species Observations database.