White flowers and arrow shaped leaves of Arrowhead

White flowers and arrow shaped leaves of Sagittaria sagittifolia also called arrowhead, due to the shape of its leaves. It is a flowering aquatic plant in the family Alismataceae, native to wetlands in Europe and Asia. Portrait orientation.
Photographed in Diemer Woods, Diemen, the Netherlands.
The round tuber is edible. It tastes bland, with a starchy texture, similar to a potato but somewhat crunchier, even when cooked. In Japan, it is known as Omodaka,オモダカ, 沢瀉, 澤瀉,面高, and its tuber is eaten particularly on the Chinese New Year. In China, it is known as 慈姑 cí gū and often used in winter hot pots. In Vietnam, the plant's young petiole leaves and rhizomes are used for soups.