• Placynthiella icmalea (Ach.) Coppins & P.James
Placynthiella icmalea
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This is a very common dark brown to blackish, crustose lichen occurring mainly on peaty soils and dead wood. The thallus is composed of stick-like granules (isidia) that are easily seen under a hand lens. Small brown discs with a persistent margin are not uncommon. It is frequent in the north of Ireland but perhaps somewhat under-recorded elsewhere.

Key characteristics

  • Placynthiella uliginosa is composed of rounded and not stick-like granules.
  • Very common on damp peat and rotting wood.

Original text submitted by Simon Davey

 Simms, M. J., (2016). Placynthiella icmalea (Ach.) Coppins & P.James. [In] LichenIreland. Accessed on 2018-08-17.