Order:       Family: Xanthopyreniaceae Species: Collemopsidium foveolatum Previously known as Pyrenocollema halodytes Growth type crustose. Photos: On barnacles. Snave beach, Cork, SW Ireland. Immersed thallus with very small perithecia (fruiting bodies) that are immersed in pits in the shells of barnacles or limpets. Perithecia are black, flattened or +/- convex. Maritime, on limpet or barnacle shells and coastal calcareous rock.

     



Collemopsidium foveolatum on barnacles. Bantry Bay, Co. Cork. February 2009