LichenIreland
  • Diploicia canescens (Dicks.) A.Massal.
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Diploicia canescens
© Robert Thompson
Diploicia canescens
© Robert Thompson
Diploicia canescens
© Robert Thompson
Diploicia canescens
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(Map updated: 11 August 2009)
Diploicia canescens
© Mike Simms
Diploicia canescens
© Mike Simms
Diploicia canescens
© Mike Simms
 

This crustose lichen has a white to pale grey thallus with neat, convex, marginal lobes. It can become covered in soredia a shade darker than the thallus. It is a familiar rosette-forming species in sheltered habitats exposed to nutrient-rich dust. Older specimens often lose their centres, especially on steep, vertical walls and on churchyard headstones. Black discs occur, but are usually uncommon. Frequent on nutrient-rich trees, old buildings and monuments.

Key characteristics

  • Uniformly robust and pale grey throughout
  • Soredia frequent; old crusts can loose their centres.

Original text submitted by Vince J. Giavarini

 
 Simms, M. J., (2016). Diploicia canescens (Dicks.) A.Massal.. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=18472 Accessed on 2018-12-12.