• Rinodina roboris (Dufour ex Nyl.) Arnold
Rinodina roboris
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(Map updated: 11 August 2009)

Surprisingly rare in Ireland, this lichen is a character species of nutrient-rich boundary trees. The grey, granular thallus has a distinctive green cast (best seen by stepping back from the tree to view) and numerous large, flat discs (>1mm diam.) with generously notched margins. In Ireland it has been recorded from Counties Cork, Laois, Offaly, Kildare and Fermanagh with earlier records from Counties Galway and Waterford. It is probably much overlooked.

Key characteristics

  • A species of large, old, rough-barked, boundary trees; thallus grey with a green glow
  • Discs, large, flat, with a wrinkled and notched margin, K+ yellow; spores, thick-walled.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Rinodina roboris (Dufour ex Nyl.) Arnold. [In] LichenIreland. Accessed on 2019-08-19.