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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.
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 2017-01-23.