Description: An easily recognised crustose lichen with a coarsely granular, pale ochre thallus with abundant convex black apothecia with black margins. Easily distinguished from the superficially similar Tephromela atra, which has a warted grey thallus and larger apothecia with pale margins.

Key Identification Features:

• Pale ochre colour.
• Granular thallus.
• Convex black apothecia with black margins.

Original text submitted by Michael J. Simms

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

iNaturalist: Lecidella asema at iNaturalist World Species Observations database.