• Calvitimela aglaea (Sommerf.) Hafellner 

There are no records for this species at present.

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Thallus Tephromela-like of grey or grey-yellowy warted areoles with strange black appressed discs like miniature, well-sucked Pontefract cakes (black liquorice sweets) pushed flat to the surface. Spores simple; Thallus K+ yellow; medulla Pd+ orange. The lichen is an upland species of exposed siliceous rocks; extremely northern and western in Ireland.

Key characteristics

  • Thallus grey or grey-yellow of Tephromela atra/Lecanora gangaleoides-type but with smooth black, flat, liquorice¬-coloured discs
  • Spot tests: medulla Pd+ orange; upland siliceous rocks – schists, gneiss.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Calvitimela aglaea (Sommerf.) Hafellner . [In] LichenIreland. Accessed on 2018-08-16.