• Psilolechia leprosa Coppins & Purvis
Psilolechia leprosa
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Very rare in Ireland, this rather attractive ‘miniature’ overgrows copper-rich rocks where it forms streaky pale green, or whitish grey, C+ red, crusts. The pale pink discs fade to brown over time, but this is particularly useful in confirming identification. The simple to one-septate, tear-drop shaped spores are a little over 7µm in length. Derelict mine buildings and copper lightning conductors are its principal habitats.

Key characteristics

  • Thallus crustose-leprose, pale green-white to white, C+ red with pink discs
  • Spores simple, like tear-drops; copper contaminated rock.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Psilolechia leprosa Coppins & Purvis. [In] LichenIreland. Accessed on 2018-07-23.