• Aspicilia cinerea (L.) Körb.
Aspicilia cinerea
Click on map to open large map in new window
(Map updated: 11 August 2009)

This grey to grey-brown or greenish, crustose species, with a thallus cracked into areoles (like jigsaw pieces) grows on exposed siliceous rocks in upland areas and is thought to be an aggregate of several lichens. Both isidia (warty outgrowths) and soredia (powdery clusters) are absent. Chemical testing carried out in the field show it is K+ red, Pd+ orange. Discs are flat with a thick margin. Localised nutrient-enrichment can cause the thallus to develop wart-like features. Throughout Ireland.

Key characteristics

  • Flat, acid rock crust of upland areas; isidia and soredia absent
  • K+ red, Pd+ orange; surface grey, brown or greenish.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Aspicilia cinerea (L.) Körb.. [In] LichenIreland. Accessed on 2019-03-23.