Family: Caliciaceae Species: Amandinea punctata Growth type crustose. Photos: Urban tree trunks, Co. Cork, bench, Co. Limerick, Ireland Very variable. Thallus pale to dark grey, inconspicuous, thin or thick, prothallus rarely present. Numerous flat to slightly convex, small black apothecia with thin margins. Pycnidia are sparse. Asci are 8-spored, spores 1-septate, 10-18 x 5-10 µm, brown when mature. Microscope photograph below. Chemical reactions usually negative, very rarely K+ pale yellow. Widespread on nutrient-rich bark and wood, also nutrient enriched rocks and debris. Tolerates pollution and inorganic fertilisers Similar: Lecidella elaeochroma. C+ orange. Spores simple

Microscope photograph

Amandinea punctata May 2010, September 2019