Catalogue no.:	V-1177103
Taxon:	Equisetum arvense L.
Label:	Equisetum arvense f. irriguum
Family:	Equisetaceae
Collector:	Otto R. Holmberg
Date:	1928 07 15
Country:	Sweden
Landskap:	Norrbotten
Socken:	Piteå
Locality:	Piteå