• Polyblastia agraria Th.Fr.
Polyblastia agraria
Click on map to open large map in new window
(Map updated: 11 August 2009)

Look for this lichen on mossy soils, dunes and disturbed areas of sandy ground. The thallus is hard to see, film-like and scattered with tiny spherical discs (perithecia). It can be up to two-thirds immersed with just the top part of the disc peeping through. In squash, the spore sacs (asci) will be seen to contain two colourless spores (4960m in length). In Ireland, it is known only from County Down.

Key characteristics

  • Discs <0.25m diam., without a hard outer shell (involucrellum), two-spored asci and colourless spores
  • On soft, mossy or sandy soils or dunes.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Polyblastia agraria Th.Fr.. [In] LichenIreland. Accessed on 2018-09-19.