LichenIreland
  • Arthonia vinosa Leight.
Arthonia vinosa
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This crustose lichen of old, rough-barked trees, for example, oaks frequently those associated with ancient woodland resembles a sprinkling of orange, red-brown specks (the discs), accompanied by yellow patches, which can frequently stain the bark. A squash of the orange discs reveals the presence of purple or magenta pigments and colourless one-septate spores. In Ireland, the species is widely distributed but rarer in the west.

Key characteristics

  • A sprinkling of orange to red-brown discs producing pigments that can stain the bark unmistakable
  • On old, rough-barked trees especially oaks, in long-established woodlands.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Arthonia vinosa Leight.. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=15517 Accessed on 2017-11-21.