Yellow, beach lichen

Yellow, beach lichen

Observation - Yellow, beach lichen. Description: Yellow placodioid lichen growing on siliceous rocks on beach. Lumpy yellow isidia on parts of thallus inside the outer lobes. Possibly Caloplaca verruculifera.

Yellow placodioid lichen growing on siliceous rocks on beach. Lumpy yellow isidia on parts of thallus inside the outer lobes. Possibly Caloplaca verruculifera.