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Sagittaria sagittifolia
Sagittaria sagittifolia (also called arrowhead due to the shape of its leaves) is a flowering plant in the family Alismataceae, native to wetlands throughout the temperate regions of Europe and Asia; in Britain it is the only native Sagittaria. It is a herbaceous perennial plant, growing in water from 10-50 cm deep. The leaves above water are arrowhead-shaped, the leaf blade 15-25 cm long and 10-22 cm broad, on a long petiole holding the leaf up to 45 cm above water level. The plant also has narrow linear submerged leaves, up to 80 cm long and 2 cm broad. The flowers are 2-2.5 cm broad, with three small sepals and three white petals, and numerous purple stamens.
Water to about 50 cm deep.
Called 'Pijlkruid' in Dutch. Not on the red list, but hard to find in the 'wild' in the Netherlands.
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