Description: This acid bark lichen of deciduous trees is scarce in Ireland. It resembles the common epiphyte B. laurocerasi (described elsewhere) but is characterised by its slightly smaller discs and purple-violet, K+ green epithecium (top layer of the disc). It is found chiefly in old woodlands. Absent from southern Ireland.

Key Identification Features:

• Like B. laurocerasi but with smaller discs and purple-violet epithecium (grey to brownish with only a purplish hint in B. laurocerasi)
• Epithecium K+ green; acid-barked trees in long-established woodlands.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Bacidia absistens at iNaturalist World Species Observations database.