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The thallus of this scurfy crustose lichen is grey or olive-brown. Convex blackish discs (to 0.5mm diam.) containing the one-septate, slipper-shaped spores (4-7ųm wide) are common. On calcareous rocks, mortar, the stone surfaces lying directly below metal grilles on church windows and on loose stones. Few records: north-east Ireland and County Kerry.
Original text submitted by Vince J. Giavarini
|Simms, M. J., (2016). Arthonia lapidicola (Taylor) Branth & Rostr.. [In] LichenIreland. |
http://www.habitas.org.uk/lichenireland/species.asp?item=15505 Accessed on 2017-02-28.