• Cladonia sulphurina (Michx.) Fr.
Cladonia sulphurina
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This robust, distinctively stalked, lemon-grey to lemon-yellow, red-fruiting Cladonia is present but rare in Ireland so needs searching for. The stalks are covered in a fine layer of powdery granules (soredia). It grows on a variety of substrata such as humus, peat and rotting wood. It has a generally northern distribution in Britain as well as Ireland. It has been known to occupy high-level blanket bog in west Donegal but is also in County Mayo. Its physical appearance would be difficult to overlook in the field so a more expansive search, especially in the northern counties, is recommended.

Key characteristics

  • Lemon/sulphur yellow, red-fruited Cladonia; the stalks (podetia) to 5cm tall
  • It is KC+ yellow; look for it on rotting stumps among peat.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Cladonia sulphurina (Michx.) Fr.. [In] LichenIreland. Accessed on 2018-08-16.