Catalogue no.:	V-1128229
Taxon:	Polygonum arenastrum Boreau
Label:	Polygonum aviculare var. calcatum
Family:	Polygonaceae
Collector:	J.Ax. Nannfeldt
Collector no.:	16499
Date:	1960 08 13
Country:	Sweden
Landskap:	Gästrikland
Socken:	Gävle
Locality:	Gävle, Rådhuset
Habitat:	Rooted in the narrow spaces between the slabs