The green pruinose apothecia on the thallus of Sticta species are distinctive. Apothecia arthonioid with brown one septate ascospores 15 – 17 x 6 – 8 µm. See Fungi of Great Britain and Ireland
Occurs sparingly in sites with large populations of its host, normally in large well preserved oceanic woods.
Widespread in Western Highlands, Scotland in temperate rainforests, rare and scattered beyond in western Ireland, western Wales and south west England.
Threat status not assessed but listed as Notable by Sanderson et al (2018)
Hawksworth, D. L., Atienza, V. & Coppins, B. J . (2010) Draft Artifical Keys to the Lichenicolous Fungi of Great Britain, Ireland, the Channel Islands, Iberian Peninsula, and Canary Islands http://www.ascofrance.fr/uploads/forum_file/LichenKeys2010-0001.pdf
Sanderson, N. A. Wilkins, T., Bosanquet, S. & Genney, D. (2018) Guidelines for the Selection of Biological SSSIs. Part 2: Detailed Guidelines for Habitats and Species Groups. Chapter 13 Lichens and associated microfungi. Joint Nature Conservation Committee 2018: Peterborough https://hub.jncc.gov.uk/assets/330efebf-9504-4074-b94c-97e9bbdbe746