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This rare, closely attached, brown foliose lichen is a granite specialist in Ireland and is known only from the Mourne Mountains of County Down. The lobes are shiny and broad only towards the margins, which are also covered in white speckle-like dots (pseudocyphellae). Tiny finger-like isidia which easily erode into soredia cover the centre and older parts of the thallus. Exposed patches of medulla respond C+ pink to a dab of fresh bleach. It grows best on south-facing granite outcrops.
Original text submitted by Vince J. Giavarini
|Simms, M. J., (2016). Melanelia disjuncta (Erichsen) Essl.. [In] LichenIreland. |
http://www.habitas.org.uk/lichenireland/species.asp?item=18874 Accessed on 2016-05-06.