Description: This hard limestone specialist has abundant, large, spherical discs (perithecia: to 1mm diam.) and a pronounced pinkish tinge to the thallus. When the old discs fall out, they leave pits. It is abundant wherever there are naturally occurring, hard limestone outcrops. It is abundant on the Carboniferous limestones of the west of Ireland and on limestone headstones in old churchyards elsewhere.

Key Identification Features:

• The pink tinge to the thallus (sometimes minutely dotted), large spherical, slightly pointed discs and empty pits where the older discs have fallen out, serve to help identify this species
• Acrocordia salweyi can be similar but grows on softer limestones, is never with a pink thallus and has broader, flatter discs.

Original text submitted by Simon Davey

Distribution Map from NBN: Acrocordia conoidea at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Acrocordia conoidea at iNaturalist World Species Observations database.