Group: Spermatophytina (Spermatophytes)
Family: Polygonaceae (Knotgrass family)
Genus: Polygonum (Knotgrass)
Polygonum oxyspermum Ledeb. - Ray's Knotgrass
Polygonum raii Bab. - Ray's Knotgrass
Polygonum aviculare agg. - Knotgrasses
Polygonum aviculare L. - Knotgrass
Polygonum depressum Meisn. - Equal-Leaved Knotgrass
Inflorescence: flowers solitary to clustered, with foliage-leaves (almost) up to the apex. flowers: mostly reddish to whitish. perianth: 5‑leaved. tepals:
The colours represent the floristic status of the species in the respective region. Green indicates native occurrences, light green naturalized occurrences. Adventive occurrences are represented by light yellow shades and plants that are cultivated (but rarely occur in the wild) are dark yellow. Grey colours are used, if the floristic status of species is unknown or uncertain.
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Natural, established occurences |  |
Artificial occurences |
The color intensity reflects the species' abundance
Data: Floristische Kartierung Deutschlands (Stand 2013), Bundesamt für Naturschutz (www.floraweb.de)
coastal drift lines
in nutritious, moist to wet, periodically flooded, often saline habitats