LichenIreland
  • Porpidia platycarpoides (Bagl.) Hertel
Porpidia platycarpoides
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(Map updated: 11 August 2009)

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This pale grey, warted thallus with large, occasionally frosted, flat discs (to 3mm diam.) with a smooth margin (this, K+ yellow-red in squash) grows on well-lit acid rocks on heathy ground and coasts and on rock among the foothills of more mountainous areas. It is also Pd+ yellow. This group of lichens is always worth spot-testing in the field. Those reacting K+ yellow to red can then be collected for further evaluation. Thinly scattered, absent from central Ireland.

Key characteristics

  • Discs with rim K+ yellow to red in section, Pd+ yellow
  • Grey, warted thallus with large discs; dry foothills and coastal heath.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Porpidia platycarpoides (Bagl.) Hertel. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=18522 Accessed on 2017-11-18.