Family: Monoblastiaceae Species: Acrocordia conoidea Growth type crustose. Photos: On limestone. Black Head and Temple Cronan, the Burren, Ireland. BLS meeting April 2009 Smooth or finely granular, pale grey or brownish-grey thallus, often tinged pink. Many large spherical perithecia, leaving conspicuous pits in thallus. Apices +/- flattened, ostiole projecting. Pycnidia are frequent. Spores 1-septate 12-19 x 6-9 µm. Chemical reactions negative. Can be abundant on natural hard limestone and on limestone memorials in old churchyards. Similar: Acrocordia salweyi

Acrocordia conoidea. The Burren. April 2009