LichenIreland
  • Megalaria pulverea (Borrer) Hafellner & E.Schreiner
Click on the thumbnails to enlarge the images
Megalaria pulverea
© Mike Simms
Megalaria pulverea
© Mike Simms
Megalaria pulverea
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 crustose species is characteristic of old, damp woodlands where it occurs on the mossy trunks of ash, willow and oak. It is frequently sterile (without discs) appearing as a thick, blue-green crust (greyer when dry) the surface becoming granular-sorediate. Naming it in the field can often have lichenologists scratching their heads. When discs are present the naming process is simplified, as these are seen to be jet black with a pale margin. It Ireland it occurs mainly in the west and north.

Key characteristics

  • When sterile, the Pd+ red and K+ yellow reactions help to confirm it, however to the practised eye, it is the characteristic colour and habitat that are diagnostic
  • A species of damp woodland, often growing on trees lining streams or river courses.

Original text submitted by Simon Davey

 Simms, M. J., (2016). Megalaria pulverea (Borrer) Hafellner & E.Schreiner. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=18322 Accessed on 2017-10-18.