Group: Spermatophytina (Spermatophytes)
Family: Lythraceae (Loosestrife family)
Genus: Trapa (Water Chestnut)
Aquatic plant, fixed in the soil by the anchor-like fruit, annual. flowers: ⚥, whitish. perianth: 4‑leaved. stamina: 4. fruits: nuts, Ø maximal 35 mm, with 4 thorns. stem: up to 3 m long. phyllotaxy: mostly whorled. floating leaves: rosulate, with an inflated stalk, ...
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)
waters
in nutritious habitats