• Phaeographis inusta (Ach.) Müll.Arg.
Phaeographis inusta
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(Map updated: 11 August 2009)

This is the most delicate of the Irish Phaeographis species. It lacks the conspicuous branching pattern of P. dendritica, the olive-green thallus of P. lyellii and the sole and boomerang-shaped flecking seen in P. smithii. It is generally a shy species with a yellowy thallus when growing on hazel bark – often only to the size of Arthonias such as stellaris and elegans. The brown three- to five-septate spores will easily separate it from species of Graphis and Arthonia. In Ireland, the species is still poorly known.

Key characteristics

  • Diminutive species of the genus; yellow-grey thallus on hazel
  • Spores brown three- to five-septate, 16–25µm long.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Phaeographis inusta (Ach.) Müll.Arg.. [In] LichenIreland. Accessed on 2019-01-20.