• Hypotrachyna sinuosa (Sm.) Hale
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Hypotrachyna sinuosa
© Mike Simms
Hypotrachyna sinuosa
© Mike Simms
Hypotrachyna sinuosa
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This small, yellow-grey, foliose lichen a twig and small branch specialist, occurs in well-illuminated situations in woodland, hazel coppice and willow swamp as well as on rocks. The yellow colour, branching pattern (like narrow-cut jigsaw pieces) and the smoothly curving and ascending lobe endings that develop powdery soralia the same colour as the rest of the lichen, suggest this species. The C- reaction of the medulla (expose this by scraping away some of the top layer with a fingernail) should help to distinguish it from the larger, greyer Hypotrachyna laevigata both of which have branched rhizinae on their undersides. It is most frequently found in western Ireland.

Key characteristics

  • Yellow-green colour of the thallus with floury soredia on the upwardly curving lobe tips
  • A species of woodland edges, clearings and low, well-lit tree canopy.

Original text submitted by Simon Davey

 Simms, M. J., (2016). Hypotrachyna sinuosa (Sm.) Hale. [In] LichenIreland. Accessed on 2018-08-14.