Northeastern Asian Flora
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Potamogeton natans L.  
Family: Potamogetonaceae
[Buccaferrea natans (L.) Bubani, moreBuccaferrea variifolia (Thore) Bubani, Potamogeton affinis Boenn. ex Cham. & Schltdl., Potamogeton besseri Steud., Potamogeton gramineus subsp. variifolius (Thore) Nyman, Potamogeton kirkii Syme, Potamogeton morongii A.Benn., Potamogeton natans subsp. kirkii (Syme) Nyman, Potamogeton natans subsp. petiolatus (Wolfg.) K.Richt., Potamogeton natans var. major W.D.J.Koch & Ziz, Potamogeton natans var. petiolaris Nyman, Potamogeton paludosus Bory ex Cham. & Schltdl., Potamogeton petiolatus Wolfg., Potamogeton plantago T.Bastard, Potamogeton polygonifolius var. parnassiifolius (Schrad. ex Mert. & W.D.J.Koch) Nyman, Potamogeton samariformis Hagstr., Potamogeton uliginosus Boenn. ex Cham. & Schltdl., Spirillus natans (L.) Nieuwl.]
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  • Japan Flora
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Japan Flora: Stems often elongate; floating leaves thickish, long-petiolate, ovate-oblong to elliptic, 5-10 cm. long, 2.5—5 cm. wide, many-nerved, entire, apiculate, rounded at base, the submersed leaves semi terete, slenderly linear, the stipules 5-8 cm. long, membranous and many­nerved; peduncles 5-10 cm. long, as thick as the stem through­out, bearing densely flowered spikes 4-6 cm. long; nutlets broadly ovate, 35-4 mm. long, nearly entire on dorsal ridge. Apr.-Aug. Ponds and shallow rivers.

Hokkaido, Hon­shu, Shikoku, Kyushu.  Widely distributed in temperate regions.

Potamogeton natans
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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