Order: Lecanorales       Family: Lecanoraceae Species: Myriolecis persimilis (Lecanora persimilis) Growth type crustose. Photos: On Ash twigs. Co. Cork, SW Ireland. Inconspicuos, evanescent greyish thallus often forming small, roundish patches between other twig lichens. Tiny (0.2-0.5mm) crowded apothecia, discs flat, orange or dark brown, the margins slightly raised. Ascus 8-spored, spores simple, 11-14 x 6-8 µm. Easily overlooked. Microscope photograph below. Pioneer species on twigs and small branches of neutral-barked deciduous shrubs and trees, especially Ash, Oak, Elder. Widespread but under-recorded. Chemical reactions negative. Often with Caloplaca cerinella, Lecania cyrtella, L. naegellii Similar: Lecanora sambuci has asci with 8+, usually 16-32 spores

Microscope photograph

Lecanora persimilis October 2009 and January 2012