Plants
Flora O-R
Polygonum arenarium, European Knotweed
Plants
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Flora O-R
Polygonum arenarium 1, Saxifraga-Jasenka Topic.jpg
Polygonum arenarium 2, Saxifraga-Rutger Barendse.JPG
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Polygonum aviculare, Knotgrass
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Polygonum amphibium, Willow Grass