Yellow Circular Lichen

Yellow Circular Lichen

Observation - Yellow Circular Lichen - UK and Ireland. Description: Almost perfect circular crustose lichen about 8cm across. Lobes slightly raised off the rock pointin

Almost perfect circular crustose lichen about 8cm across. Lobes slightly raised off the rock pointing me towards Xanthoria parietina. Multiple apotheca, rims lighter in colour.