Group: Spermatophytina (Spermatophytes)
Family: Polygonaceae (Knotgrass family)
Genus: Persicaria (Knotgrass)
Persicaria amphibia (L.) Delarbre - Amphibious Bistort
Persicaria lapathifolia (L.) Delarbre - Pale Persicaria
Persicaria maculosa Gray - Redshank
Persicaria orientalis (L.) Spach - Eastern Knotgrass
Persicaria hydropiper (L.) Delarbre - Water-Pepper
Persicaria minor (Huds.) Opiz - Small Water-Pepper
Persicaria dubia (Stein) Fourr. - Tasteless Water-Pepper
Persicaria nepalensis (Meisn.) H. Gross - Nepal Persicaria
10–40 cm tall, annual. inflorescence: pseudo-spikes in a panicle-like whole-inflorescence,
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)
riparian vegetation, mudflat vegetation, reedbeds
in nutritious, moist to wet, periodically flooded habitats