• Lecanora persimilis (Th.Fr.) Nyl.
Lecanora persimilis
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(Map updated: 11 August 2009)

This is one of the smallest of the twig-inhabiting Lecanora species in Ireland. It is frequently found alongside Lecania cyrtella, L. naegellii and Caloplaca cerinella and other pioneer lichens growing in the earliest wave of twig colonisation, often in a zone just below the first flush of scar tissue. It tolerates mild nutrient enrichment. The thallus is barely a stain, thin and grey. Discs are frequently <0.4mm diam., beige to red-brown, flat. The asci are eight-spored. Spot tests negative. Rather thinly scattered in Ireland, but grossly under-recorded.

Key characteristics

  • Early pioneer of deciduous twigs (oak, ash, sycamore) co-dominant with a handful of other micro-lichens
  • Discs, eight-spored, minute, concave at first, becoming flat at maturity; thallus inconspicuous.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Lecanora persimilis (Th.Fr.) Nyl.. [In] LichenIreland. Accessed on 2019-06-25.