Order: Peltigerales       Family: Lobariaceae Species: Sticta fuliginosa agg. Growth type foliose. Photos: On ash. Gougane Barra, Ireland. Now split into four separate species: Sticta fuliginosa s. str, Sticta atlantica, Sticta fuliginoides and Sticta ciliata Most frequent in the west of Ireland on damp mossy trees and rocks in old oceanic woodland. Chemical reactions negative. Thallus smells of fish when wet. Details and descriptions from Neil Sanderson: Link

Photo above: Sticta fuliginosa. Gougane Barra, Co. Cork. February 2009