LichenIreland
  • Caloplaca flavescens (Huds.) J.R.Laundon
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Caloplaca flavescens
© Mike Simms
Caloplaca flavescens
© Mike Simms
Caloplaca flavescens
© Mike Simms
Caloplaca flavescens
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(Map updated: 11 August 2009)
Caloplaca flavescens
© Mike Simms
 

This is one of Irelandís most familiar rosette-forming lichens; it forms conspicuous orange to yellow-orange rings on calcareous stone, often with a white, non-pigmented circle within. The long, convex lobes continue to the very edge of the plant. Orange discs, slightly darker than the thallus are frequent. No soredia or isidia are produced. Specimens may lose their centres as they age. Calcareous rocks, walls, headstones and churchyard memorials.

Key characteristics

  • Forms neat, orange circles often with a white, non-pigmented area
  • Lobes uniform throughout with no isidia or soredia.

Original text submitted by Vince J. Giavarini

 
 Simms, M. J., (2016). Caloplaca flavescens (Huds.) J.R.Laundon. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=20533 Accessed on 2018-10-20.