Photo: Polygonum aviculare 1.

Flowering branches. MTT Karila research station, Mikkeli, Finland. Planted. 2001-08-13.

Polygonum aviculare L.
Engl.: prostrate knotweed, knotgrass, knotweed.
Deu.: Vogelknöterich, Knotenwegerich, Wegtritt.
Suom.: pihatatar.
Sven.: trampört, trampgräs.
TCM: bian xu