Description: This is one of several similar-looking Bacidia species which grow on shaded calcareous rock and stonework. B. delicata will also grow on bark and spread to mosses. It has a thin, green-granular, finely sorediate thallus, pale pink discs and a colourless upper exciple. In Ireland, the species is widely distributed.

Key Identification Features:

• Thin, finely sorediate thallus and discs with a colourless exciple
• On shaded calcareous rock, especially in urban areas.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Bacidina delicata at iNaturalist World Species Observations database.