LichenIreland
  • Trapelia obtegens (Th.Fr.) Hertel
Trapelia obtegens
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This is an acid rock lichen of stony waste and spoil. It most commonly occurs as small, scattered convex lumps (areoles to 1mm diam.) covered in greenish soredia that are C (fresh bleach) + red. It can also have a form resembling rather congested aggregations of rounded squamules. The brown discs are not always present. Central and eastern Ireland mainly.

Key characteristics

  • Scattered squamules with greenish soredia
  • Thallus C+ red; acid dusty sites: old quarries, mines, spoil, and in urban areas, brick.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Trapelia obtegens (Th.Fr.) Hertel. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=19108 Accessed on 2017-12-16.