• Stereocaulon leucophaeopsis (Nyl.) P.James & Purvis
Stereocaulon leucophaeopsis
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This lichen is very easily overlooked because of its small and prostrate form and is very unlike other lichens in the genus. However, fear not! S. leucophaeopsis is a specialist species of metal-contaminated rock and colonises small pieces of mine spoil with its distinctive areole-like squamules with dark-grey centres and soralia only forming around the edges of these (never dissolving into a mass of sorediate granules). They are not unlike the flattened squamule-like phyllocladia of S. vesuvianum. In Ireland, the species is very local.

Key characteristics

  • Areole-like squamules, K+ yellow, with dark centres on stable pieces of metalliferous mine spoil; areole edges often sorediate;
  • Discs black, sometimes frequent.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Stereocaulon leucophaeopsis (Nyl.) P.James & Purvis. [In] LichenIreland. Accessed on 2018-08-20.