• Melanelia exasperatula (Nyl.) Essl.
Click on the thumbnails to enlarge the images
Melanelia exasperatula
© Mike Simms
Melanelia exasperatula
© Mike Simms
Melanelia exasperatula
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 shiny brown, foliose epiphyte with inflated, ‘brown paper bag’ or peg-like isidia is occasional on enriched twigs and branches. It appears to be frequent in the northern half of Ireland but there are, as yet, few records from the south.

Key characteristics

  • It can be distinguished chemically from the common Melanelia fuliginosa ssp. glabratula by the C- reaction
  • The rounded isidia, that are hollow distinguish it from Melanelia elegantula, a rarer species that has peg-like isidia that are frequently branched.

Original text submitted by Simon Davey

 Simms, M. J., (2016). Melanelia exasperatula (Nyl.) Essl.. [In] LichenIreland. Accessed on 2018-08-16.