Description: This attractive grey species is at its best in western Ireland where it is not uncommon on mossy tree boles and rocks. It could easily be overlooked for P. perlata, but is a more loosely attached plant lacking the dusty sorediate lobes of that species and is spiked with scores of small black cilia (hairs) and rod-like warts (isidia) creating a likeness to chin stubble. Once seen, never forgotten. The underside with its black centre and simple rhizines (hair-like roots) and contrasting bald margins should serve to confirm its identity.

Key Identification Features:

• Loosely attached to mosses and other lichens; base of trees mainly
• Leafy grey lobes shot through with small black hairs (cilia) and rod-like isidia.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Parmotrema crinitum at iNaturalist World Species Observations database.