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Sparganium emersum · parastasis šiurpis

EN · European bur-reed, unbranched bur-reed DE · Einfacher Igelkolben LV · vienkāršā ežgalvīte PL · jeżogłówka pojedyncza

https://en.wikipedia.org/wiki/Sparganium_emersum The leaves are flat and straplike, sometimes with a triangular, keeled base that can help distinguish it from the similar Sparganium angustifolium.