Description: The light grey, white-speckled, foliose, rosette-forming thallus of this species with a ‘frilly’ thalline edge and abundant black, grey-frosted discs makes this a distinctive and attractive lichen of well-lit twigs and branches of nutrient-rich trees such as sycamore, ash and poplar.

Key Identification Features:

• Pale grey, ‘frilly’ edged thallus with abundant white, pinprick spots and contrasting large black roughly circular discs
• Stands out like no other lichen when growing on the knobbly twig ends of hedgerow trees or on smaller branches.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Physcia aipolia at iNaturalist World Species Observations database.