Description: This is a common, mosaic-forming, crustose lichen of young, smooth-barked trees. The thin green-grey crust is peppered with dull black to green-black wine-gum-like fruiting discs and ringed by a black thalline margin resembling a boundary drawn on a map. It is a common pioneer lichen of twigs, bark and wood.

Key Identification Features:

• Dull black discs on a green-grey background
• Thallus ringed by a black border.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Lecidella elaeochroma f. elaeochroma at iNaturalist World Species Observations database.