Catalogue no.:	V-1177171
Taxon:	Equisetum arvense L.
Label:	Equisetum arvense f. serotinum
Family:	Equisetaceae
Collector:	Hj. Hjelt, I. Hjelt & G. Larson
Date:	1922 07 05
Country:	Finland
Landskap:	Satakunta
Socken:	Vammala
Locality:	par. Karkku, Lammentaka, in aggere viae ferratae ad "Karva-bäcken"