• Cetraria ericetorum Opiz
Cetraria ericetorum
Click on map to open large map in new window
(Map updated: 11 August 2009)

Click here to view an interactive map of the Northern Ireland dataset as currently collated by CEDaR.
The map is generated through the NBN Gateway using their Interactive Mapping Tool.


The shrubby or erect, red-brown or dark grey-brown thallus of this lichen bears a close resemblance to C. islandica (described elsewhere). It differs in the strongly channelled, inrolled lobes with marginal, bristle-like projections, and the Pd- medulla. It usually occurs above 900m on lichen-rich heaths. Old records were made from Counties Down, Cork and Kerry.

Key characteristics

  • Very like C. islandica but has strongly inrolled lobes and is more erect
  • Medulla is Pd-; Pd+ in C. islandica.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Cetraria ericetorum Opiz. [In] LichenIreland. Accessed on 2018-06-24.