Description: This rarity is known only from County Clare. Usually white or yellow-white, the thallus forms rounded crumpled patches with lobed edges on vertical limestone walls. Discs are common like little buff-coloured jam tarts scattered on the surface, sprinkled with an icing-sugar frosting of pruina; thallus C+ orange.

Key Identification Features:

• Not unlike a diminutive, yellow-white crumpled version of Solenopsora candicans but C+ orange
• Discs frequent, brown, thickly pruinose.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Myriolecis pruinosa at iNaturalist World Species Observations database.