• Aspicilia contorta subsp. hoffmanniana S. Ekman & Fröbergnom. inval.
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Aspicilia contorta subsp. hoffmanniana
© Mike Simms
Aspicilia contorta subsp. hoffmanniana
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(Map updated: 11 August 2009)

This taxon is easily mistaken for Aspicilia calcarea (described elsewhere) owing to the thinness of the thallus and scattered discs. A close inspection shows that it has a darker grey colour, with evidence of scattered pruina and prominent discs in areoles that merge as if melted together. This subspecies is under-recorded in Ireland.

Key characteristics

  • Thallus darker than Aspicilia calcarea often with some hint of pruina
  • Areoles joined at the margin, but discs prominent, never flat or concave.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Aspicilia contorta subsp. hoffmanniana S. Ekman & Fröbergnom. inval.. [In] LichenIreland. Accessed on 2019-01-19.