• Collema glebulentum (Nyl. ex Cromb.) Degel.
Collema glebulentum
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 little olive-green to black ‘jelly lichen’ with a thallus of 3-6cm diam. is an upland species of rather basic streams and lough margins. It is rosette-forming, with numerous lobes attaching closely to the substratum. In addition, numerous finger-like isidia form a thick stubby presence across the surface of the thallus. Discs unknown. Western Ireland.

Key characteristics

  • Small ‘jelly lichen’ of upland loughs and rivers; rosette-forming
  • Consists of numerous, tightly adpressed lobes overgrown with coralloid isidia.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Collema glebulentum (Nyl. ex Cromb.) Degel.. [In] LichenIreland. Accessed on 2018-08-16.