• Cetraria aculeata (Schreb.) Fr.
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Cetraria aculeata
© Mike Simms
Cetraria aculeata
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(Map updated: 11 August 2009)

This is a characteristic, dark brown to black, foliose to shrubby species typical of sandy or heathy places or moor-edge habitat. It is a more robust version of C. muricata (described elsewhere) which is essentially restricted to deadwood. C. aculeata has longer, wider (to 1mm) and more flattened branches (with spiny projections) forming loose, somewhat untidy clumps on dry, peaty soils. It is frequent in suitable upland habitats throughout Ireland but is rarer in the south.

Key characteristics

  • The habitat and tough, shiny dark brown to black, rather spiky appearance helps to indicate this species
  • The similar Cetraria muricata is smaller with more rounded branches and rarely grows on soil.

Original text submitted by Simon Davey

 Simms, M. J., (2016). Cetraria aculeata (Schreb.) Fr.. [In] LichenIreland. Accessed on 2019-01-16.