• Chrysothrix chrysophthalma (P.James) P.James & J.R.Laundon
Chrysothrix chrysophthalma
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Visually not unlike the more widespread, sorediate species C. flavovirens, but the yellow in this species emanates from the yellow-pruinose discs not the soredia, which in C. chrysophthalma are entirely absent. Discs numerous, spherical; occasionally forming tuber-like clusters. In Ireland, it can be found on the bark of broadleaved trees. It is not a deep-shade species. Northern, eastern and south-west Ireland.

Key characteristics

  • Thallus, grey, stain-like, soredia absent
  • Discs numerous, tiny, yellow-pruinose; UV+ orange.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Chrysothrix chrysophthalma (P.James) P.James & J.R.Laundon. [In] LichenIreland. Accessed on 2018-08-15.