Description: The thallus of this rarity has been compared to L. lichenoides and L. gelatinosum. However, this distinctive species is blue-grey with rounded lobes. The matt upper surface carries a fine furry tomentum. Clusters of granular or lobe-like isidia are present. Usually it forms cushions on thick mossy mats of Isothecium myosuroides in humid, sheltered habitats often on the leaning trunks of oak and birch: County Kerry and west County Cork.

Key Identification Features:

• Thallus blue-grey, lobes rounded with granular or sub-lobate isidia, densely furry in places
• Cushion-forming on Isothecium myosuroides on oak and birch; south-west Ireland.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Leptogium juressianum at iNaturalist World Species Observations database.