Water chestnut, Water caltrop
Trapa natans L.
PROTECTED species in Bulgaria.
Herbaceous annual water plant. Height 2 m. Flowering June-July.
In the next phytogeographic regions: The Danubian Plain, North-Eastern Bulgaria, The Predbalkan, Stara Planina (east), Thracian Plane, The Rhodopes (east) and The Black Sea coast. Up to 500 m above see level.
Native in Europe, Asia and Africa.
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