LichenIreland
  • Aspicilia contorta (Hoffm.) Kremp.
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Aspicilia contorta
© Mike Simms
Aspicilia contorta
© Mike Simms
Aspicilia contorta
© Mike Simms
Aspicilia contorta
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This crustose species occurs commonly on hard calcareous substrates including artificial surfaces such as patios and paving, so is not infrequent in town gardens. It consists of greenish-grey, scattered, rounded areoles (little islands of thallus resembling jigsaw pieces) which sometimes coalesce to form spreading colonies. Each areole will support between one and three discs, some of which appear glazed and partially open like a chameleonís eye. All concrete drives and patios should have it.

Key characteristics

  • It is unlikely to be confused with other species as it has a thallus consisting of delimited areoles that are usually white-frosted
  • The greenish-grey almost squinting discs are distinctive.

Original text submitted by Simon Davey

 Simms, M. J., (2016). Aspicilia contorta (Hoffm.) Kremp.. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=18186 Accessed on 2017-12-18.