• Mycomicrothelia atlantica D.Hawksw. & Coppins
Mycomicrothelia atlantica
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(Map updated: 11 August 2009)

This taxon, like its relative M. confusa (described elsewhere), is a close ally of epiphytic Arthopyrenia species and therefore a member of the ‘bark pimple’ tribe of lichens. All Mycomicrothelia differ from Arthopyrenia in their brown-coloured spores. M. atlantica (like M. confuse) has an almost invisible fringe of cells around the conical discs (perithecia). It is readily distinguished by the silvery-grey thallus, smaller spores (13.5–16µm long), presence of pycnidia between the discs and more heavily shaded hazel woodland habitat.

Key characteristics

  • Thallus silver-grey, on smooth, deeply-shaded hazel bark
  • Spores small (<16µm long) with a spotting of pycnidia between the discs.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Mycomicrothelia atlantica D.Hawksw. & Coppins. [In] LichenIreland. Accessed on 2020-05-26.