Family: Incertae sedis Species: Agonimia tristicula Growth type squamulose. Photos: Glengarriff woods and mortared wall, Co. Cork, SW Ireland. Photo left and immediately below identified by Andy Acton Thallus of tiny, flattened green squamules, greyish-brown when dry, with minute papillae on upper surface. Very small, black, barrel-shaped apothecia are often half-hidden amongst the squamules. Usually over moss on mortared walls and on calcareous soils. Occasionally on bark of base-rich trees; Acers, Elm and Ash. Similar: Agonima octospora is corticolous, with smaller, less flattened squamules.

Agonimia tristicula March 2010 and December 2011