Description: This is a lichen of shaded acid bark in damp, humid woodlands. It forms a dull green thallus of finely compacted granules, largely without loose strands of projecting hyphae. Spot tests K+ bright yellow, Pd+ bright yellow. In Ireland, the species is under-recorded but is currently more frequent in the north.

Key Identification Features:

• Thallus dull green, diffuse on shaded acid bark; also in deeply shaded humid situations
• Spot tests: K+ bright yellow, Pd + bright yellow; also on wood.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Lepraria umbricola at iNaturalist World Species Observations database.