• Polyblastia cupularis A.Massal.
Polyblastia cupularis
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Search for this lichen on basic rock in upland areas where the first sign of such a species will be prominent dots on the surface of the rock. The dots (perithecia with a distinct outer shell or involucrellum) grow from a thin, grey to brown thallus. When squashed and examined under a microscope the discs will be seen to contain colourless, muriform spores that are 21 to 45m long. In Ireland, the species is poorly known.

Key characteristics

  • Thallus thin: grey-brown; discs to 0.6mm diam.; with a well-formed involucrellum
  • Spores colourless 2145m long.; basic rocks in the uplands.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Polyblastia cupularis A.Massal.. [In] LichenIreland. Accessed on 2018-08-21.