Catalogue no.:	L-641536
Taxon:	Rhizocarpon geminatum
Label:	Rhizocarpon geminatum
Family:	Lichenes
Collector:	A.H. Magnusson
Collector no.:	4796
Date:	1920 07 23
Country:	Sweden
Landskap:	Bohuslän
Socken:	Valla
Locality:	låka, Tjörn