Description: This common bark lichen has a thin, grey, smooth to lumpy-warted thallus. The plentiful fruits are in the form of raised discs, small, variably pale to darker brown, surrounded by a moderately thick, grey, slightly wrinkled margin – like a tyre wrapped around a wheel. Trees: all surfaces except the smallest twigs; also on wooden posts and fences.

Key Identification Features:

• Grey, epiphytic crustose lichen with abundant brown discs
• Discs with light to dark brown centres and conspicuous grey margins.

Original text submitted by Vince J. Giavarini

Distribution Map from NBN: Lecanora chlarotera s. lat. at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Lecanora chlarotera s. lat. at iNaturalist World Species Observations database.