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A distinctive crustose lichen with a thick, pale grey, warted thallus. Conspicuous large black apothecia with pale margins are abundant. This is a common species of the 'Grey Zone' but also is found on siliceous rocks inland. Superficially similar to Lecidella subincongrua, but that species has a pale ochre thallus and the convex apothecia have black margins.
Original text submitted by Michael Simms
|Simms, M. J., (2016). Tephromela atra (Huds.) Hafellner ex Kalb. [In] LichenIreland. |
http://www.habitas.org.uk/lichenireland/species.asp?item=18569 Accessed on 2017-04-27.