Photo: Polygonum lapathifolium.

Plants in seed; this is a proliferous garden weed. Annala, Helsinki, Finland. Wild. 1999-08-15.
Polygonum lapathifolium L. Engl.: curlytop knotweed, pale persicaria. Deu.: Ampfer-Knöterich. Suom.: ukontatar. Sven.: pilört, knutig pilört, knutpilört, rödknäa, strandpilört. Bot. syn.: Persicaria lapathifolia (L.) Gray, Polygonum brittingeri Opiz, Polygonum persicaria auct., Polygonum scabrum Moench, Polygonum tomentosum Schrank
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Photo: Polygonum lapathifolium.