Description: This lichen should be compared very closely with P. pastillifera (described elsewhere) which is almost identical and found in similar habitats. P. tiliacea has a slightly bluer thallus and may have some frosting on the lobes. The isidia are pale brown (not blackened), cylindrical or coralloid and are not attached to a short stalk. Discs are rare. Occasional; southern and south-east Ireland.

Key Identification Features:

• Blue-grey thallus with some frosting on the lobes; densely isidiate
• Unstalked, coralloid, pale brown isidia.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Parmelina tiliacea at iNaturalist World Species Observations database.