Order: Teloschistales Family: Caliciaceae
Species: Amandinea punctata
Photos: Urban tree trunks, Co. Cork, SW 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 Ám, brown when mature. Microscope photographs below.
Chemical reactions usually negative, very rarely K+ pale yellow.
Widespread on nutrient-rich bark and wood, also found on nutrient enriched rocks and debris. Tolerant of pollution and inorganic fertilisers.
Similar: Lecidella elaeochroma. C+ orange.