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.
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Photo: Polygonum persicaria 1.