Catalogue no.:	L-002438
Taxon:	Arthonia ruana A.Massal
Label:	Arthothelium ruanum
Family:	Lichenes
Collector:	Rolf Santesson
Date:	1952 06 12
Country:	Sweden
Landskap:	Uppland
Socken:	Bladåker
Locality:	E of the Lake Vällen, c. 2 km W of Pettbol
Habitat:	In a dark decidous forest. On Fraxinus