Order: Verrucariales Family: Verrucariaceae
Species: Verrucaria pinguicula
Photos: On tombstone. Inishannon, Cork, SW Ireland.
Identification uncertain, photo's probably of V. viridula
Whitish to pale brown continuous or cracked thallus, often raised above surrounding rock and surrounded by dark line. Prominent black perithecia, apex usually flattened, ostiole inconspicuous. Shallow pits sometimes left in rock when perithecia decays.
Occurs on hard limestone. Chemical reactions negative.
Similar: Verrucaria dufourii
Verrucaria pinguicula. July 2009