Caliciaceae Amandinea punctata Growth type crustose Chemical reactions usually negative, occasionally K+ pale yellow. Tolerant of pollution and inorganic fertilisers and is common on nutrient-rich bark and wood. Also found on stony debris and bird-perching rocks Can be very variable. Thallus is pale grey to dark greenish-grey, rarely with a darker prothallus. The flat or slightly convex small black apothecia have thin margins. Spores 1-septate, 10-18 x 5-10 µm, becoming brown when mature. Pycnidia sparse. Microscope photographs below. Similar: Lecidella elaeochroma. C+ orange, UV+ orange. Simple spores. Amandinea lecideina is infrequent, on siliceous coastal rocks

Microscope photographs





Amandinea punctata
Dorset. December 2012, January 2013, December 2016, December 2023