LichenIreland
  • Graphis scripta (L.) Ach.
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Graphis scripta
© Robert Thompson
Graphis scripta
© Robert Thompson
Graphis scripta
© Robert Thompson
Graphis scripta
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(Map updated: 11 August 2009)
 

This crustose species (the classic ‘scripture’ lichen) has a thin, white or grey, smooth to wrinkled thallus. The unfurrowed, black, worm-like discs (lirellae) are variably arranged, sometimes in parallel rows but more often as a mixed frieze of evenly spaced, curved or inverted, single or double-looped shapes (like a miniature collage scattered evenly over a white canvas) the ends tapering to a point. Each has a central slit which, when fully expanded, may be faintly frosted over with a thin layer of white pruina. Common on tree twigs, branches and trunks.

Key characteristics

  • The discs are unfurrowed and often pruinose
  • Like black curvilinear scratch marks on parchment.

Original text submitted by Vince J. Giavarini

 
 Simms, M. J., (2016). Graphis scripta (L.) Ach.. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=16935 Accessed on 2018-10-19.