LichenIreland
  • Rinodina fimbriata Körb.
Rinodina fimbriata
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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.
http://www.habitas.org.uk/lichenireland/species.asp?item=432862 Accessed on 2017-10-23.