• Pyrenula laevigata (Pers.) Arnold
Pyrenula laevigata
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P. laevigata is a conspicuous crustose epiphyte in its primary habitat of oceanic hazel woodland. The silvery thallus containing the flattened spherical discs (perithecia) bordered by a mosaic of lines of black, globose pycnidia provide important clues as to its identity. It lacks the yellow or red bark pigmentation or tiny white flecks (pseudocyphellae) common to other members of the family. Northern and western Ireland.

Key characteristics

  • Silvery to creamy white thallus ringed by lines composed of tiny, black dots (pycnidia)
  • Perithecia (0.2-0.3mm diam.) flattened; mainly on oceanic hazel.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Pyrenula laevigata (Pers.) Arnold. [In] LichenIreland. Accessed on 2018-08-16.