Order: Lecanorales       Family: Lecanoraceae Species: Myriolecis actophila (Lecanora actophila) Growth type crustose. Photos: On coastal rocks near Toormore, Cork, SW Ireland. Creamy-white to yellowish grey-green smooth, cracked or areolate thallus, often with whitish prothallus. Small greenish-black, sessile apothecia become bluish when wet. Entire, paler margins become contorted but not excluded or crenulate. The spores are simple, ellipsoid and sometimes guttulate, 8-14 x 5-6 µm. K-, C-, KC+ weak yellow, P-, UV+ pale pink Coastal, common on siliceous rocks in 'grey zone' above HWM. Similar: Lecanora helicopsis. Greyer thallus, discs brown.

     


Lecanora actophila. On coastal rock, Toormore, Co.Cork. February 2009