Potamogeton natans ?

Potamogeton natans L., Sp. Pl. 126 1753. (syn: Buccaferrea natans (L.) Bubani; Potamogeton affinis Boenn. ex Cham. & Schlecht.; Potamogeton besseri Steud.; Potamogeton fluitans var. petiolatus (Wolfg.) Nyman; Potamogeton kirkii Syme; Potamogeton morongii A.Benn.; Potamogeton natans f. angustifolius Regel; Potamogeton natans subsp. ellipticus Gaudin; Potamogeton natans var. explanatus Mert. & W.D.J.Koch, nom. superfl.; Potamogeton natans var. intermedius Mert. & W.D.J.Koch, nom. superfl.; Potamogeton natans subsp. kirkii (Syme) Nyman; Potamogeton natans f. lancifolius (Fieber) Rchb.; Potamogeton natans var. lancifolius Fieber; Potamogeton natans var. major W.D.J.Koch & Ziz; Potamogeton natans var. media W.D.J.Koch & Ziz; Potamogeton natans var. minor Hook.f., nom. illeg.; Potamogeton natans f. ovalifolius (Fieber) Rchb.; Potamogeton natans var. ovalifolius Fieber; Potamogeton natans var. petiolaris Nyman; Potamogeton natans subsp. petiolatus (Wolfg.) K.Richt.; Potamogeton natans var. petiolatus (Wolfg.) Nyman; Potamogeton natans var. pygmaeus Gaudin; Potamogeton natans var. terrestris Gray; Potamogeton natans subsp. vulgaris Gaudin; Potamogeton natans f. vulgaris Rchb., nom. illeg.; Potamogeton natans var. vulgaris Roth, not validly publ.; Potamogeton paludosus Bory ex Cham. & Schltdl.; Potamogeton petiolaris C.Presl, nom. illeg.; Potamogeton petiolatus Wolfg.; Potamogeton plantago T.Bastard; Potamogeton samariformis Hagstr.; Potamogeton sparganiifolius Bab., nom. illeg.; Potamogeton uliginosus Boenn. ex Cham. & Schlecht.; Spirillus natans (L.) Nieuwl.) ?;
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Temp. & Subtropical Northern Hemisphere: Afghanistan, Alaska, Albania, Alberta, Algeria, Altay, Amur, Austria, Baltic States, Belarus, Belgium, Bulgaria, Buryatiya, Central European Rus, Chita, Colorado, Corse, Czechoslovakia, Denmark, East Aegean Is., East European Russia, Finland, France, Føroyar, Germany, Great Britain, Greece, Hungary, Iceland, Illinois, Iran, Ireland, Irkutsk, Italy, Japan, Kamchatka, Kazakhstan, Kirgizstan, Korea, Krasnoyarsk, Krym, Kuril Is., Lebanon-Syria, Libya, Magadan, Mexico Central, Mexico Northwest, Mexico Southwest, Mongolia, Morocco, Myanmar, Nepal, Netherlands, New Mexico, New York, North Caucasus, North European Russi, Northwest European R, Norway, Pakistan, Poland, Portugal, Primorye, Romania, Sakhalin, Sardegna, Sicilia, South European Russi, Spain, Sweden, Switzerland, Tadzhikistan, Transcaucasus, Tunisia, Turkey, Tuva, Ukraine, Uzbekistan, Vermont, West Himalaya, West Siberia, Yakutskiya, Yemen, Yugoslavia, Yukon as per POWO;
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Aquatic species DB 6 : 6 posts by 2 authors. Attachments (1) – 6 mb.
Identity requested
Location: Assam
Date: 20.9.19

Potamogeton species
Family – Potamogetonaceae


Seems near P.nodosus.
And thanks …


Close to Potamogeton perfoliatus (flowering and fruiting stage is needed for identification) as per reply by … in another thread.



P. perfoliatus would have all submerged leaves, to me it looks like P. natans


Nepali Name : पानी झार Paanee Jhaar 


Potamogeton perfoliatus (clasping leaf Potamogeton) has leaves arranged clasping the stems and there are no floating leaves, permanently submerged macrophyte. This seems to Potamogeton natans or maybe (excuse me if I am wrong) Aponogeton natans (please look for bulb/onions absence of which rules out Aponogeton). I doubt Aponogeton as they have spoon shaped, rounded floating leaves.


I guess this is Potamogeton octandrus Poir.
https://www.knowyourweeds.com/en/weeds/Potamogeton_octandrus
https://indiaflora-ces.iisc.ac.in/herbsheet.php?id=9543&cat=13


Finally found the ID of this unique aquatic plants.. i thought it was Potamogeton coloratus compared to online images, but coloratus is a temperate aquatic macrophyte restricted to calcareous peatland waters of Europe and adjacent regions and is not part of the native or naturalized aquatic flora of India. Plus i don’t think peat filled ponds are found in India due to higher temperatures and increased microbial Activity.


Is ID correct ?


Honestly I don’t know! I could not find any ideas.. personally this species seems to be on decline due to habitat loss…


 

 

 


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References:
POWO  Catalogue of Life  The Plant List Ver.1.1  WCSP  IPNI  India Biodiversity Portal  IBIS Flora
https://gobotany.nativeplanttrust.org/species/potamogeton/natans/
https://calscape.org/Potamogeton-natans-()

Updated on January 30, 2026

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