Circular grey lichen

Circular grey lichen

Observation - Circular grey lichen. Description: Location - neither garden nor park but on wall at top of pedestrian subway under main road. About two inches in diameter. Pale grey. Photo cropped to provide close up shows black fruiting bodies.

Location - neither garden nor park but on wall at top of pedestrian subway under main road.

About two inches in diameter. Pale grey.

Photo cropped to provide close up shows black fruiting bodies.