Monoblastiaceae Acrocordia conoidea Growth type crustose Chemical reactions negative Can be abundant on +/- moist, shaded natural hard limestone, also on found on limestone memorials in old churchyards and on calcareous walls. The pale grey or brown-grey thallus is often pink-tinged when fresh. Large perithecia (0.5-1mm) leave conspicuous pits in thallus. Apices often flattened with projecting ostiole. Pycnidia are frequent. Spores 1-septate 12-19 x 6-9 µm. Microscope photographs below. Similar: A. salweyi. Perithecia to 1.5mm, larger spores 20-35 x 10-15 µm

Microscope photographs



Acrocordia conoidea
Dancing Ledge and Lychett Matravers, Dorset. February 2013, January 2014