Click here to view an interactive map of the Northern Ireland dataset as currently collated by CEDaR.
The map is generated through the NBN Gateway using their Interactive Mapping Tool.
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