• Catillaria contristans (Nyl.) Zahlbr.
Catillaria contristans
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(Map updated: 11 August 2009)

This small lichen forms a grey, warty-granular crust among bryophytes and soily debris at acid, ‘high ground’ sites, usually above 500m. The convex to almost globose discs are black and shiny and contain simple or one-septate spores. Similar species such as Micarea lignaria and Protomicarea limosa can be separated on the basis of their Pd+ reaction of the thallus. In Ireland, the species is known from Mount Brandon, County Kerry. Previous records come only from the Wicklow Mountains.

Key characteristics

  • Grey warty crust of clustered granules growing on exposed mountain soils among mosses and liverworts; spores when mature one-septate
  • Discs almost globose, black and glossy; reacts Pd-.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Catillaria contristans (Nyl.) Zahlbr.. [In] LichenIreland. Accessed on 2019-08-25.