LichenIreland
  • Squamarina cartilaginea (With.) P.James
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Squamarina cartilaginea
© Mike Simms
Squamarina cartilaginea
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(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.

 

S. cartilaginea (var. cartilaginea) is a robust squamulose lichen of calcareous rocks, mosses and soils. The paths of limestone cliffs are a favourite habitat. The large, frosted, pale-green to yellowish-brown squamules (PD+ yellow medulla) form tight or loosely overlapping crusts. Brown, almost rimless discs when mature (3-4mm diam.) are frequent and clustered. In fact this species is not unlike a giant version of the urban roof dweller Lecanora muralis which is a useful image to have in mind when hunting it for the very first time. Scattered and local in Ireland.

Key characteristics

  • Generally non-rosette-forming but with a yellow-green to occasionally pale brown squamulose thallus of wavy-edged, overlapping lobes with a thin frosting of pruina
  • Crevices, soils, paths and tracks across stony calcareous terrain. A second chemical race (var. pseudocrassa) occurs away from the coast and has a PD- medulla.

Original text submitted by Vince J. Giavarini