View source for Potamogeton amplifolius

{{Treatment/ID
|accepted_name=Potamogeton amplifolius
|accepted_authority=Tuckerman
|publications={{Treatment/Publication
|title=American Journal of Science, and Arts
|place=ser. 2, 6:225. 1848
|year=1848
}}
|common_names=Broad-leaved pondweed;potamot à grandes feuilles
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Potamogetonaceae;Potamogeton;Potamogeton amplifolius
|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 amplifolius]]</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 rusty spotted, 6–110 cm; nodal glands absent. <b>Turions</b> absent. <b>Leaves</b> both submersed and floating or floating absent, &#177; spirally arranged. <b>Submersed</b> leaves petiolate, lax; stipules persistent, conspicuous, convolute, free from blade, light brown, not ligulate, 1.5–11.7 cm, not fibrous, not shredding at tip, apex acute; petioles terete, 0.9–11.5 cm; blade light to dark green, ovate to oblanceolate, distinctly arcuate, 5–12.5 cm × 15–58 mm, base rounded to acute, without basal lobes, not clasping, margins entire, crispate, apex not hoodlike, acute to round-apiculate, lacunae absent; veins 19–49. <b>Floating</b> leaves: petioles continuous in color to apex, 2.3–22.6 cm; blade adaxially light green, lanceolate to round elliptic, 4.3–9.2 cm × 25–38 mcm, base rounded to cordate, apex acute to rounded; veins 27–49. <b>Inflorescences</b> unbranched, emersed; peduncles not dimorphic, terminal or axillary, erect, cylindric, 4.5–22.3 cm; spikes not dimorphic, cylindric, 34–65 mm. <b>Fruits</b> sessile, reddish brown, obovoid, turgid, abaxially keeled, laterally ridged, 5–6.7 × 4.5–5.2 mm, lateral ridges without points; beak erect, 0.5–0.8 mm; sides without basal tubercles; embryo with full spiral. <b>2n</b> = 52.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall.
|habitat=Waters of lakes, ponds, streams, and rivers
|elevation=0–1900(–2900) m
|distribution=B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;Que.;Sask.;Ala.;Ark.;Calif.;Conn.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.H.;N.J.;N.Y.;N.C.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.Dak.;Tenn.;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.
|discussion=<p>No specimens have been seen from Kentucky or Texas, but the species is to be expected there.</p><!--
--><p><i>Potamogeton amplifolius</i> is common throughout much of North America. Its submersed leaves are larger than those of most other species of <i>Potamogeton</i>, are arcuate, and have more veins than do any other species.</p><!--
--><p>One hybrid, <i>Potamogeton amplifolius</i> × <i>P. illinoensis</i> (= P. × scoliophyllus Hagstr&ouml;m), has been described.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Potamogeton amplifolius
|authority=Tuckerman
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Potamogetonaceae
|phenology=Flowering summer–fall.
|habitat=Waters of lakes, ponds, streams, and rivers
|elevation=0–1900(–2900) m
|distribution=B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;Que.;Sask.;Ala.;Ark.;Calif.;Conn.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.H.;N.J.;N.Y.;N.C.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.Dak.;Tenn.;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.
|reference=None
|publication title=American Journal of Science, and Arts
|publication year=1848
|special status=Illustrated;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V22/V22_449.xml
|genus=Potamogeton
|species=Potamogeton amplifolius
}}<!--

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