Horsetail Knotweed
Polygonum equisetiforme
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- Type: Flowering Plant
- Family: Polygonaceae
- Genus: Polygonum
- Species: equisetiforme
- Colour: White
- Habitat: Sand Dunes
- Habitat: Scrubland
- Habitat: Waysides
- Site:Odeceixe
- Site:Portugal
- Month:June
- Photographer:DW