LichenIreland
  • Pertusaria hymenea (Ach.) Schaer.
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Pertusaria hymenea
© Mike Simms
Pertusaria hymenea
© Mike Simms
Pertusaria hymenea
© Mike Simms
Pertusaria hymenea
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(Map updated: 11 August 2009)
 

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This common crustose lichen of both smooth and rough tree bark has a thin, smooth-mottled, slightly cracked, grey to grey-green thallus bearing crooked discs with thick, irregular margins (like a punctured car tyre) emerging from sunken warts. It can occur on trees with its namesake, Pertusaria pertusa but, unlike that species, lacks the conspicuous zoned margin and neat, pinpricked discs.

Key characteristics

  • Clumsy-crooked discs with scurfy-deflated margins
  • Barely zoned border to the thallus.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Pertusaria hymenea (Ach.) Schaer.. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=19396 Accessed on 2017-11-21.