Species: Stereocaulon evolutum
Photos: On rock on wet acid heath. Ballingeary, Cork, SW Ireland.
Identification confirmed by John Douglass
Cushion-forming with irregularly branched light-grey pseudopodetia (stems). Many flattened phyllocladia, deeply divided into +/- cylindrical extensions, often overlapping and +/- hiding the pseudopodetia. Large terminal apothecia are rare or absent.
Found in upland regions on moss and siliceous rocks.
K+ yellow, KC+ violet (use filter paper), P+ faint yellow, UV+ white
Similar: Stereocaulon vesuvianum and S. dactylophyllum
Stereocaulon evolutum. September and October 2009