Description: In many respects this subspecies resembles A. ciliaris subsp. ciliaris (described elsewhere) but has a completely different habitat of exposed rocky headlands and peninsulas. It is usually dark grey to brown but is characteristically olive green when wet. Sites are restricted to the extremities of south-west Ireland.

Key Identification Features:

• On rocky, remote headlands and peninsulas
• Thallus lobes, dark grey to brown when dry, olive green when wet.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Anaptychia mamillata at iNaturalist World Species Observations database.