View source for Potamogeton perfoliatus

{{Treatment/ID
|accepted_name=Potamogeton perfoliatus
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=1: 126. 1753 (as perfoliatum)
}}
|common_names=Potamot perfolié
|basionyms=
|synonyms=
|hierarchy=Potamogetonaceae;Potamogeton;Potamogeton perfoliatus
|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 perfoliatus]]</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, without spots, to 250 cm; nodal glands absent. <b>Turions</b> absent. <b>Leaves</b> submersed, &#177; spirally arranged, sessile, lax; stipules deteriorating into fibers and deciduous, inconspicuous (absent on proximal portion of stem), convolute, free from blade, light brown to green, not ligulate, 3.5–6.5 cm, not fibrous, not shredding at apex; blade olive-green, broadly lanceolate, orbiculate, or ovate, not arcuate, 0.9–7.6(–9.7) cm × 7–40 mm, base rounded, without basal lobes, clasping, margins entire, often crispate, apex not hoodlike, not splitting when pressed, round, rarely acute; veins 3–25. <b>Inflorescences</b> unbranched, emersed; peduncles not dimorphic, terminal or axillary, erect to rarely recurved, cylindric, 1–7.3 cm; spike not dimorphic, cylindric, 0.4–4.8 cm. <b>Fruits</b> sessile, greenish brown to olive-green, obovoid, turgid or rarely concave, not abaxially or laterally keeled, 1.6–3 × 1.3–2.2 mm; beak erect, 0.4–0.6 mm; sides without basal tubercles; embryo with 1 full spiral. <b>2n</b> = 52.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall.
|habitat=Waters, often brackish, of lakes, streams, rivers, and bays
|elevation=0–100 m
|distribution=Greenland;St. Pierre and Miquelon;N.B.;Nfld. and Labr.;N.S.;Ont.;P.E.I.;Que.;Ala.;Conn.;Del.;D.C.;Fla.;La.;Maine;Md.;Mass.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;Vt.;Va.;Central America (Guatemala);Eurasia;Africa;Australia.
|discussion=<p>Four hybrids, <i>Potamogeton perfoliatus</i> × <i>P. praelongus</i> (= P. × cognatus Ascherson & Graebner), <i>P. perfoliatus</i> × <i>P. pusillus</i> (= P. × mysticus Morong), <i>P. gramineus</i> × <i>P. perfoliatus</i> (= P. × nitens Weber [P. × subnitens Hagstr&ouml;m]), and <i>P. alpinus</i> × <i>P. perfoliatus</i> (= P. × prussicus Hagstr&ouml;m), have been described.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Potamogeton perfoliatus
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Potamogetonaceae
|phenology=Flowering summer–fall.
|habitat=Waters, often brackish, of lakes, streams, rivers, and bays
|elevation=0–100 m
|distribution=Greenland;St. Pierre and Miquelon;N.B.;Nfld. and Labr.;N.S.;Ont.;P.E.I.;Que.;Ala.;Conn.;Del.;D.C.;Fla.;La.;Maine;Md.;Mass.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;Vt.;Va.;Central America (Guatemala);Eurasia;Africa;Australia.
|reference=None
|publication title=Sp. Pl.
|publication year=
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V22/V22_386.xml
|genus=Potamogeton
|species=Potamogeton perfoliatus
}}<!--

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