Yellow lichen on smooth stone wall

Yellow lichen on smooth stone wall

Observation - Yellow lichen on smooth stone wall - UK and Ireland. Description: A ubiquitous yellow foliose lichen found on walls in the area. It appears to be a species of xanthoria, and grows in small plaques less than 30mm across.

A ubiquitous yellow foliose lichen found on walls in the area. It appears to be a species of xanthoria, and grows in small plaques less than 30mm across.