Sagittaria pygmaea

{{Short description|Species of aquatic plant}}

{{speciesbox

|image = Sagittaria pygmaea.JPG

|genus = Sagittaria

|species = pygmaea

|authority = Miq.{{WCSP | 287429 | accessdate = 2017-01-30}}

|synonyms = *Blyxa coreana (H.Lév.) Nakai

• Hydrolirion coreanum H.Lév.
• Sagittaria altigena Hand.-Mazz.
• Sagittaria sagittifolia var. oligocarpa Micheli
• Sagittaria sagittifolia var. pygmaea (Miq.) Makino

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Sagittaria pygmaea, commonly known as the dwarf arrowhead or pygmy arrowhead,{{GRIN | name = Sagittaria pygmaea | accessdate = 2017-02-09}} 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 {{convert|30|cm|abbr=off}} long.{{Cite journal |last1=Gakkai |first1=Nihon Shokubutsu |last2=Gakkai |first2=Tåokyåo Shokubutsu |last3=Gakkai |first3=Tokyo Shokubutsu |date=1902-01-01 |title=The Botanical Magazine |url=https://www.biodiversitylibrary.org/page/5432928#page/116/mode/1up |journal=Botanical Magazine Tokyo |language=en |volume=v.16 (1902) |issn=0006-808X}}Nakai, Takenoshin (1943). Journal of Japanese Botany. [Shokubutsu Kenkyu Zasshi]. Tokyo 19:247. "Blyxa coreana".

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).{{Cite web|url=http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200024715|title=Sagittaria pygmaea in Flora of China @ efloras.org|website=www.efloras.org|access-date=2017-01-30}} It grows in shallow water in marshes, channels and rice paddies.