View source for Potamogeton natans

{{Treatment/ID
|accepted_name=Potamogeton natans
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=1: 126. 1753
|year=1753
}}
|common_names=Floating-leaf pondweed;potamot flottat
|basionyms=
|synonyms=
|hierarchy=Potamogetonaceae;Potamogeton;Potamogeton natans
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Potamogetonaceae]]</div><div class="higher-taxon"><small>genus</small>[[Potamogeton]]</div><div class="higher-taxon"><small>species</small>[[Potamogeton natans]]</div></div>
|volume=Volume 22
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Rhizomes </b>present. <b>Cauline</b> stems terete, often rust-spotted, 30–90 cm; nodal glands absent. <b>Turions</b> absent. <b>Leaves</b> both submersed and floating, &#177; spirally arranged. <b>Submersed</b> leaves sessile, rigid; stipules persistent, conspicuous, convolute, free from blade, whitish, not ligulate, 4.5–1 cm, fibrous, not shredding at tip, apex obtuse; blade light to dark green, phyllodial, not arcuate, 9–20 cm × 0.7–2.5 mm, base slightly tapering, without basal lobes, not clasping, margins entire, not crispate, apex not hoodlike, obtuse, lacunae absent; veins 3–5, obscure. <b>Floating</b> leaves: petioles lighter green immediately proximal to apex, 5.5–29 cm; blade adaxially light green, elliptic to ovate, 3.5–11 cm × 15–60 mm, base cordate, apex acute to rounded; veins 17–37. <b>Inflorescences</b> unbranched, emersed; peduncles not dimorphic, terminal, erect to ascending, cylindric, 4.5–9.5 cm; spikes not dimorphic, cylindric, 25–50 mm. <b>Fruits</b> sessile, green to greenish brown, obovoid, turgid, not abaxially or laterally keeled, 3.5–5 × 2–3 mm; beak erect to apically recurved, 0.4–0.8 mm; sides without basal tubercles; embryo with 1 full spiral. <b>2n</b> = 52.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall.
|habitat=Quiet or slow-flowing waters of ponds, lakes, and streams
|elevation=0–3100 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Conn.;Idaho;Ill.;Ind.;Iowa;Kans.;Maine;Mass.;Mich.;Minn.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Oreg.;Pa.;R.I.;S.Dak.;Utah;Vt.;Wash.;W.Va.;Wis.;Wyo.;Eurasia.
|discussion=<p><i>Potamogeton natans</i> is the common floating-leaved pondweed of the north temperate ure areas. It is essentially circumboreal and can easily be identified by floating leaves that are almost always cordate at the base of the blade, the petiole with a short band of light tissue at its apex, and the submersed phyllodial leaves. Also, the apex of the petiole usually is bent so that the blade appears oriented in the opposite direction from which the petiole appears to be oriented.</p><!--
--><p>One hybrid, <i>Potamogeton natans</i> × <i>P. nodosus</i> (= P. × schreberi Fischer [P. × perplexus A. Bennett]), has been described.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Potamogeton natans
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Potamogetonaceae
|phenology=Flowering summer–fall.
|habitat=Quiet or slow-flowing waters of ponds, lakes, and streams
|elevation=0–3100 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Conn.;Idaho;Ill.;Ind.;Iowa;Kans.;Maine;Mass.;Mich.;Minn.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Oreg.;Pa.;R.I.;S.Dak.;Utah;Vt.;Wash.;W.Va.;Wis.;Wyo.;Eurasia.
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V22/V22_38.xml
|genus=Potamogeton
|species=Potamogeton natans
}}<!--

-->[[Category:Treatment]][[Category:Potamogeton]]