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.
Thallus grey-green, shrubby or brittle-tufted comprising numerous narrow, flattened subdividing branches just a few millimetres wide at most. The entire plant is anchored by a stout, compact holdfast. Circular white spots seen along the margins of the branches (soralia) contain a fine, floury mixture of fungal hyphae and algae (soredia). It is very rarely fertile. Trees and shrubs, especially hedges and scrub, less frequent on rocks.
Original text submitted by Vince J. Giavarini