• Pannaria hookeri (Borrer) Nyl.

There are no records for this species at present.

Known in Ireland only from one site in County Clare, this is a grey, crustose lichen of basic mica-schists or similar rocks with short thick, fan-shaped lobes and black discs. The Pd+ faint orange reaction of the thallus is significant. It is an unmistakable species of mountain cliffs.

Key characteristics

  • Near-complete grey rosettes 23cm diam., of short, thick fan-like lobes with black discs
  • Tests Pd+ faint orange.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Pannaria hookeri (Borrer) Nyl.. [In] LichenIreland. Accessed on 2019-01-21.