• Diploschistes caesioplumbeus (Nyl.) Vain.
Diploschistes caesioplumbeus
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This crustose seashore lichen begins its life as a parasite of Lecanora gangaleoides, eventually developing an independent, lead-grey to blue-grey, shiny, C+ red, cracked thallus, punctuated by rounded and immersed discs. Its distinctive colour attracts attention in the field. In Ireland, it is very local in Counties Sligo and Waterford.

Key characteristics

  • Thallus, lead- or blue-grey, shiny, cracked into tiny ‘islands’, each with an immersed disc with a dimple in the top
  • On well-lit, siliceous rocks along the seashore (rare, though possibly under-recorded).

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Diploschistes caesioplumbeus (Nyl.) Vain.. [In] LichenIreland. Accessed on 2018-07-16.