Description: This lichen is associated with mosses on siliceous rocks and tree boles in hilly areas. It produces abundant small, flat, pale brown discs with a raised rim rapidly excluded with age. The simple spores separate this species from L. hypnorum which has darker discs and broader, septate spores. Throughout Ireland.

Key Identification Features:

• Thallus pale grey-brown, membranous like fine silk dissolved on to moss; discs pale brown, abundant, at first with a margin but later excluded
• Spores simple, narrow 9-14ųm long.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Bryobilimbia hypnorum at iNaturalist World Species Observations database.