Photo: Polygonum persicaria 1.

Seedheads. Annala, Helsinki, Finland. Wild. 1999-08-15.

Polygonum persicaria L.
Engl.: redshank, spotted ladysthumb, lady's thumb, smartweed, spotted knotweed.
Deu.: Floh-Knöterich.
Suom.: hanhentatar.
Sven.: åkerpilört, blekknäa, pilört, vanlig åkerpilört.
Bot. syn.: Persicaria maculata auct., Persicaria maculosa Gray, Persicaria mitis auct., Polygonum mite auct., Polygonum persicaria L.