LichenIreland
  • Agonimia octospora Coppins & P.James
Agonimia octospora
Click on map to open large map in new window
(Map updated: 11 August 2009)

Click here to view an interactive map of the Northern Ireland dataset as currently collated by CEDaR.
The map is generated through the NBN Gateway using their Interactive Mapping Tool.

 

This crustose epiphyte is comprised of small, squat, white to grey-green, multi-finger-like squamules (<3 mm long). It grows only on trees (such as oak) where there is known to be a long history of woodland continuity. The smooth, conical to barrel-shaped discs are not uncommon, though through a lens it is the strange squamules which first alert the observer. It has eight spores per spore sac (ascus) and is confined more or less exclusively to south-west Ireland but should be searched for in all known ‘ancient’ woodland.

Key characteristics

  • On very old trees in old woodlands; squamules green, never brown-tinged
  • Agonimia tristicula is similar and may also occur on trees but has bronze-tinted squamules and only one or two spores per ascus.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Agonimia octospora Coppins & P.James. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=20586 Accessed on 2017-12-17.