Description: Find a good stand of bog myrtle and you will find this lichen. Look for it on the woody stems where the small (0.2-0.4mm diam.), olive green or bluish to black, broadly spherical discs (perithecia) pimple the bark. For confirmation, look out for the white border which surrounds every disc like a silver halo. Northern and western Ireland.

Key Identification Features:

• The abundant discs with an olive green or blue tinge
• Discs surrounded by silver-white halo.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Mycoglaena myricae at iNaturalist World Species Observations database.