Photo: Fallopia convolvulus.

Flowering plant. Annala, Helsinki, Finland. Wild. 2000-07-14.
Fallopia convolvulus (L.) A. Lve Engl.: black bindweed, bearbind, climbing buckwheat, wild buckwheat. Deu.: Acker-Windenknöterich, Winden-knöterich. Suom.: kiertotatar. Sven.: åkerbinda. Bot. syn.: Bilderdykia convolvulus (L.) Dum., Helxine convolvulus (L.) Neuman, Tiniaria convolvulus (L.) Webb. & Moq., Polygonum convolvulus L.
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Photo: Fallopia convolvulus.