Order: Lecanorales       Family: Lecanoraceae Species: Myriolecis hagenii (Lecanora hagenii) Growth type crustose. Specimen left identified by John Douglass Photos: Ardsallagh, Co. Waterford and Killarney, Co. Kerry, Ireland Thallus usually smooth and grey, sometimes immersed. Apothecia become constricted at base, discs usually reddish-brown, +/- pruinose with thin grey margins. Often in small groups becoming angular by compression. Asci 8-spored, spores 7-14 x 4-8 µm. Micrographs below. Chemical reactions negative Nitrophytic, most frequent on dusty or nutrient-rich bark and wood, occasional on bricks and pavements Similar: Lecanora sambuci has asci with 8+, usually 16-32 spores and Lecanora dispersa is usually (but not always) saxicolous

Micrographs





Myriolecis hagenii (Lecanora hagenii). April 2012 and August 2024