LichenIreland
  • Micarea melaena (Nyl.) Hedl.
Micarea melaena
Click on map to open large map in new window
(Map updated: 11 August 2009)

This species forms a granular thallus which, to the naked eye, appears little more than a coarse, black charcoal stain on soil or wood. Black, globose discs are usually abundant with a dark, purple-brown hypothecium (bottom layer of the disc) under the microscope. Spores: three-septate. C+ red or C-: all other reactions are negative. Wooden tree stumps, decaying timber, acid bark and peat. Northern Ireland, rare elsewhere.

Key characteristics

  • Black, stain-like, granular thallus with abundant spherical discs
  • On decaying acid bark; disc with colourful purple-brown hypothecium in squash; occasionally C+ red.

Original text submitted by Vince J. Giavarini

 
 Simms, M. J., (2016). Micarea melaena (Nyl.) Hedl.. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=18825 Accessed on 2018-10-18.