Sagittaria pygmaea

Sagittaria pygmaea, commonly known as the dwarf arrowhead or pygmy arrowhead,^[2] is an aquatic plant species. It is a perennial herb producing by means of stolons. Leaves are linear to slightly spatula-shaped, not lobed, up to 30 centimetres (12 inches) long.^[3][4][5]

Sagittaria pygmaea
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Alismatales
Family:	Alismataceae
Genus:	Sagittaria
Species:	S. pygmaea
Binomial name
Sagittaria pygmaea Miq.[1]
Synonyms[1]
Blyxa coreana (H.Lév.) Nakai Hydrolirion coreanum H.Lév. Sagittaria altigena Hand.-Mazz. Sagittaria sagittifolia var. oligocarpa Micheli Sagittaria sagittifolia var. pygmaea (Miq.) Makino

It is native to Japan (including the Ryukyu Islands), Korea, Taiwan, Thailand, Vietnam, Bhutan and China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, Sichuan, Yunnan, Zhejiang).^[1][3] It grows in shallow water in marshes, channels and rice paddies.