Catalogue no.:	V-1177023
Taxon:	Equisetum arvense L.
Label:	Equisetum arvense f. aestivale
Family:	Equisetaceae
Collector:	G.A. Ringselle
Date:	1928 08 11
Country:	Sweden
Landskap:	Uppland
Socken:	Singö
Locality:	Singö, Örnängen, in litorearenoso ad Singösund