LichenIreland
  • Leptogium britannicum P.M.Jørg.& P.James
Leptogium britannicum
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(Map updated: 11 August 2009)

Walking the cliff tops of the west of Ireland you might come across this large, blue-grey species nestling into soily turf at the foot of an outcrop or a deeply embedded boulder. Some people may dismiss it as a small, innocuous pile of seaweed or strange alga, shredded and blown here by the wind and it is easy to see why. L. britannicum is quite unlike most lichens, thin-lobed and papery, crisp and wrinkled when dry, like translucent, thickly-shredded tracing paper. There are no isidia or soredia, and discs are rare. When wet it turns green-grey. Look for it on cliff-top slopes, on soily walls and around the edge of towering outcrops. Reactions negative. Western Ireland.

Key characteristics

  • Blue-grey, papery-wrinkled thallus closely bound to the soil; among short grasses or mosses, thallus without isidia or soredia
  • Exposed, grassy sites above steep coastal cliffs in the west.

Original text submitted by Vince J. Giavarini

 
 Simms, M. J., (2016). Leptogium britannicum P.M.Jørg.& P.James. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=18770 Accessed on 2018-12-12.