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This ‘bark-pimple’ lichen grows exclusively on birch. There is no visible thallus so the tiny, black, spherical discs (0.3-0.5mm diam.) show up as black dots on the bark often with a faint, dark shadow below the disc. From above the discs (perithecia) appear oval. The spores are colourless, curved and one-septate (25-35 x 2-4ųm). Scattered; Northern and western Ireland.
Original text submitted by Vince J. Giavarini
|Simms, M. J., (2016). Leptorhaphis epidermidis (Ach.) Th.Fr.. [In] LichenIreland. |
http://www.habitas.org.uk/lichenireland/species.asp?item=16154 Accessed on 2017-01-23.