LichenIreland
  • Pertusaria multipuncta (Turner) Nyl.
Click on the image to enlarge it in a new window
Pertusaria multipuncta
© Robert Thompson
Pertusaria multipuncta
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.

 

This grey, crustose epiphyte of smooth, acid-barked trees and shrubs, such as hazel, holly and beech, is known by its sorediate crater-like warts that conceal the discs below; each sprinkled with a fine veil of powder and crystals. It tends to occur in wooded areas that have remained long undisturbed. It is scattered in suitable habitats in Ireland.

Key characteristics

  • The grey thallus is cracked like a layer of reptile skin and is darker than the warts which appear on the surface
  • The crater-like warts are edged with white granules (soredia) and conceal the discs. Rubbing the soralia with a thumb will reveal them beneath. It has a passing resemblance to Phlyctis agelaea from which it is distinguished by the K+ red reaction.

Original text submitted by Simon Davey

 Simms, M. J., (2016). Pertusaria multipuncta (Turner) Nyl.. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=19403 Accessed on 2017-11-19.