Lecanora soralifera

A species of siliceous rock, walls and occasionally wood. Within the recording area it has been recorded on Pennant Sandstone, Devonian Brownstone, ORS conglomerate boulders (including Arthur's Stone on Cefn Bryn) and copper slag boulders on Kilvey Hill. The grey to yellow-green thallus is areolate or subsquamulose and dispersed, with yellowish soralia produced from centre of each areole. When growing well it can spread over most of thallus (K-, C-, KC+ yellow, P- & UV+ dull orange). Apothecia usually absent.

Listed by Alan Orange in Flora of Glamorgan (Wade et al, 1994).