• Rinodina fimbriata Körb.
Rinodina fimbriata
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 rare, aquatic crustose lichen has a grey to pale brown thallus with immersed discs that are black but become browner when wet, surrounded by a thin margin. Under the microscope the spores appear to have the distinctive pattern of an elongated cross at their centres. R. fimbriata favours nutrient-enriched rock by streams, rivers, loughs and tarns. In Ireland, it has only been recorded in County Kerry but should occur more widely on siliceous sandstones and slates.

Key characteristics

  • Grey to pale brown thallus with immersed black discs; on nutrient-enriched rock by rivers and lakes, especially at confluence points
  • Spores have the distinctive pattern of a cross at their centres; thallus K-.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Rinodina fimbriata Körb.. [In] LichenIreland. Accessed on 2018-08-20.