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(Map updated: 11 August 2009)

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