Description: Lecanora saligna is a relatively common lichen of weathered wood and worked timber; often it appears on substrata such as garden sheds in urban situations. The grey, granular thallus can be barely more than a stain but the small (<1mm diam.) red-brown discs — once they appear — can grow to smother the thallus completely. No other lichen with the same small, red-brown discs does this on wood. Thinly scattered in Ireland.

Key Identification Features:

• Thallus grey, granular, smothered in small, red-brown discs; spot tests negative
• On weathered wood and worked timber.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Lecanora saligna at iNaturalist World Species Observations database.