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An easily recognised crustose lichen with a coarsely granular, pale ochre thallus with abundant convex black apothecia with black margins. Easily distinguished from the superficially similar Tephromela atra, which has a warted grey thallus and larger apothecia with pale margins.
Original text submitted by Michael Simms
|Simms, M. J., (2016). Lecidella asema (Nyl.) Knoph & Hertel. [In] LichenIreland. |
http://www.habitas.org.uk/lichenireland/species.asp?item=18747 Accessed on 2016-10-22.