LichenIreland
  • Lecanora carpinea (L.) Vain.
Lecanora carpinea
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Look to find this lichen on tree twigs and small branches, chiefly deciduous trees where it forms small white to grey coloured patches. The very pale brown discs become furred-up with pruina, like an icing-sugar topping on a cake, so appear white from above. A drop of fresh bleach (C) on the end of a toothpick will dissolve the pruina, turning the discs yellow.

Key characteristics

  • White pruinose discs on a white thallus twigs and branches mainly
  • C+ yellow reaction (If C negative, then it is possible the species is Lecanora albella, a lookalike)

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Lecanora carpinea (L.) Vain.. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=18576 Accessed on 2017-11-24.