LichenIreland
  • Parmeliella testacea P.M.Jørg.
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Parmeliella testacea
© Robert Thompson
Parmeliella testacea
© Robert Thompson
Parmeliella testacea
© Mike Simms
Parmeliella testacea
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(Map updated: 11 August 2009)
Parmeliella testacea
© Mike Simms
 

On mossy, broadleaved trees in the sheltered woodlands of the west it is very possible you might come across this species. It has a strong smell of antiseptic when wet. Well-developed material forms conspicuous rosettes with radiating marginal lobes. The whole thallus is squamulose (of flat, grey-brown to red-brown, rubbery scales with granular margins), the squamules 2-3mm wide but extending to 5mm towards the edge of the thallus. A black hypothallus (the base on which the squamules are fastened) is often visible. Western and south-western Ireland.

Key characteristics

  • Thallus with antiseptic smell (check out this first) and radiating marginal lobes (always worth looking around for better developed material if you sense you may have stumbled across this species)
  • Many grey to red-brown squamules larger than 2mm (commonly on hazel and sallow in best habitats).

Original text submitted by Vince J. Giavarini

 
 Simms, M. J., (2016). Parmeliella testacea P.M.Jørg.. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=18914 Accessed on 2018-10-24.