• Gyalideopsis muscicola P.James & Vězda
Gyalideopsis muscicola
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(Map updated: 11 August 2009)

The thallus of this species grows among mosses in western oceanic woodlands, especially species of Isothecium and Rhytidiadelphus. It appears as a thin grey film, which is of little use in identification. However, the feature to search out is the otherworldly-looking hyphophores (scale-like structures) which have the web-like appearance of a clawed hand. Find them where mosses overhang vertical habitat such as boulder tops, banks and cuttings and so hold rainwater longer than the surroundings. Discs are red to brown-black; spores 15- to 20-septate. In Ireland, there are a few scattered records across the island from the north-east to the south-west.

Key characteristics

  • Thallus a film, fruits red to black, hyphophores (like modified isidia) blackish, shaped like a clawed hand
  • In western woodlands on the drip tassels of mosses.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Gyalideopsis muscicola P.James & Vězda. [In] LichenIreland. Accessed on 2020-05-30.