Sagittaria natans
Sagittaria natans Pall.

Sagittaria natans is a flowering aquatic plant in the Alismataceae family, known for its floating leaves that can be linear, heart-shaped, or arrow-shaped. It is distributed across the Palaearctic region, including areas such as Finland, Japan, Russia, and parts of China and Korea.
Description
Sagittaria natans, described by Pall. in 1776, is an aquatic species within the genus Sagittaria. It is characterized by its floating leaves that vary in shape from linear to arrow-shaped. The plant is native to various regions, including Finland, Japan, parts of Russia, and areas in China and Korea. It is part of the Alismataceae family, commonly known as the water plantain family.
Distribution
Palaearctic · FI · SE · NO · Altay · Amur · Buryatiya · Chita · East European Russia · Finland · Inner Mongolia · Irkutsk · Japan · Kamchatka · Kazakhstan · Khabarovsk · Korea · Krasnoyarsk · Magadan · Manchuria · Mongolia · North European Russi · Northwest European R · Primorye · Sakhalin · Sweden · Tuva · West Siberia · Xinjiang · Yakutskiya
Synonyms
Sagittaria alpinaSagittaria alpina var. emersaSagittaria alpina var. submersaSagittaria sagittifolia var. brevilobaSagittaria sagittifolia f. auriculataSagittaria sagittifolia f. linearifoliaSagittaria sagittifolia f. emersaSagittaria sagittifolia var. tenuiorSagittaria sagittifolia f. minorSagittaria sagittifolia f. breviloba