Description: The record of this rather beautiful Lempholemma from County Sligo is today regarded as doubtful. The black, tiny fan-like thallus with channelled lobes covered in clustered isidia and lobules are conspicuous in their net-like form, but are usually restricted to ledges and small pools on high ground above 700m. Furthermore, it is associated with calcareous mica-schists and the like.

Key Identification Features:

• Thallus in tiny fan-shaped rosettes with channelled lobes and clustered isidia
• On calcareous mica-schists above 700m.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Lempholemma radiatum at iNaturalist World Species Observations database.