Order: Lecanorales Family: Lecanoraceae
Species: Lecanora polytropa
Photos: On acidic upland rock and worked timber. Ballingeary, Cork, SW Ireland. Specimens identified by J Douglass and B Coppins.
Small inconspicuous or areolate yellowish-green or grey-green thallus, often with black prothallus. Small pale yellow to greenish-yellow convex apothecia, paler margin becoming excluded.
Common throughout Ireland on siliceous rocks, walls and worked timber. Thallus K+ indistinct yellow, C-, KC+ yellow, P-, UV-
Lecanora polytropa June 2009 and January 2010