• Porina mammillosa (Th.Fr.) Vain.
Porina mammillosa
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A much sought-after species. Known only from a single site in County Clare, P. mammilosa is a soil-inhabiting Porina. The rather thick, uneven thallus produces perithecial discs (0.30.5mm diam.) with pink, orange and yellow internal pigments, which burst through the surface taking a layer of grey thallus with them. Spores are three-septate, narrower than in P. sudetica.

Key characteristics

  • Soil-inhabiting; thallus thick, uneven
  • Perithecia with bright pigmentation (in squash); spores three-septate.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Porina mammillosa (Th.Fr.) Vain.. [In] LichenIreland. Accessed on 2018-07-19.