Description: This small, easily overlooked species (colonies only 2cm diam.) consisting of tiny bluish-grey to brown scales with indented edges growing on mossy, basic-barked trees, occurs chiefly in woodland areas with a long history of stability. The edges of the scales are covered in grey, sugar-like granules (isidia). In sheltered, moist woodlands. It is predominantly western in Ireland.

Key Identification Features:

• It resembles Pannaria and Parmeliella species when poorly developed. The small size, blue-grey squamules with abundant granular isidia along the saw-toothed edge of the scales help to indicate this species
• It is often among mosses at oceanic sites in the west.

Original text submitted by Simon Davey

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

iNaturalist: Parmeliella parvula at iNaturalist World Species Observations database.