• Arthonia fuscopurpurea (Tul.) R.Sant.
Arthonia fuscopurpurea
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This lichenicolous lichen grows on the thallus of Peltigera hymenina. It is characterised by the scattered red-brown to blackish discs, the one-septate smooth colourless spores with upper cell shorter, absence of K+ purple pigments and presence of pycnidia. Currently there is a single record from County Fermanagh.

Key characteristics

  • Red-brown discs (often edged with a white ring), one-septate spores with upper cell shorter and wider, no K+ purple pigments, pycnidia present
  • Growing on the thallus of Peltigera hymenina.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Arthonia fuscopurpurea (Tul.) R.Sant.. [In] LichenIreland. Accessed on 2018-08-15.