LichenIreland
  • Leproplaca xantholyta (Nyl.) Harm.
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Leproplaca xantholyta
© Mike Simms
Leproplaca xantholyta
© Mike Simms
Leproplaca xantholyta
© Mike Simms
Leproplaca xantholyta
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(Map updated: 11 August 2009)
Leproplaca xantholyta
© Mike Simms
 

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 unmistakable, mustard-yellow ‘powder lichen’ of shaded, hard limestone underhangs and crevices can be told by its colour, lobe-like margins and spot tests. It can form thalli many centimetres wide or smaller fragments of a few millimetres or so where it is starting to become established. A white medulla may be seen where the surface is broken. Reactions: K+ purple. Northern half of Ireland, much rarer in the south.

Key characteristics

  • Thallus mustard yellow, of powdery granules above a white medulla
  • Edges clearly lobed; K+ purple, on hard, shaded limestone.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Leproplaca xantholyta (Nyl.) Harm.. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=20571 Accessed on 2017-10-20.