• Trapeliopsis flexuosa (Fr.) Coppins & P.James
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Trapeliopsis flexuosa
© Mike Simms
Trapeliopsis flexuosa
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(Map updated: 11 August 2009)

This is mostly a crust of wooden railings bounding the long drives of old estate properties, but it will just as easily colonise wooden bollards in towns and picnic tables set out on grassy lawns by the sea. The green or blue-green thallus is composed of flattened, granular areoles linking together like a jigsaw to form a continuous crust. Powdery grey-green to dark blue-green soredia is often present on the surface. A dab of fresh bleach turns it red. Northern half of Ireland, mostly.

Key characteristics

  • Green-blue thallus of flattened, jigsaw piece-like areoles coated in green soredia; on the tops of wooden rails, posts and bollards
  • C + red thallus.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Trapeliopsis flexuosa (Fr.) Coppins & P.James. [In] LichenIreland. Accessed on 2019-06-25.