Candelariaceae Candelaria concolor Growth type foliose Chemical results: K- or K+ dirty-brown Found on nutrient-rich bark, fence posts and occasionally on rocks. A rapid coloniser, spreading eastwards due to reduction in air pollution levels. Tufted or layered minute yellowish lobes, whitish below with scattered simple white rhizines. Deeply incised with soredia forming on lobe margins and sometimes spreading over thallus. Apothecia infrequent, yellowish with roughened margins. Similar: Xanthoria candelaria is K+ crimson

Candelaria concolor
Studland and Westbourne, Dorset. October 2012 and February 2013