Species: Nephroma laevigatum
Photos: On dead Hawthorn. The Burren, W Ireland.
BLS Burren meeting 2009
Large, shiny red-brown to grey-brown lobes, sometimes with small lobules on margins. Undersides whitish or buff, wrinkled. Chestnut-brown apothecia are usually present on the undersides of longer, recurved lobes. Medulla pale yellow. Soredia absent.
Occurs in old oceanic woodlands in the west of Ireland on mossy tree trunks, damp rocks and walls. 'Old forest' indicator species.
Medulla K+ purple
Similar: Nephroma parile. Medulla white. Sorediate.
Nephroma laevigatum. BLS Burren meeting, April 2009