View source for Pontederia cordata

{{Treatment/ID
|accepted_name=Pontederia cordata
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=1: 208. 1753
|year=1753
}}
|common_names=Pontédérie cordée;langue du boeuf
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Narukila cordata
|authority=(Linnaeus) Nieuwland
}} {{Treatment/ID/Synonym
|name=Pontederia angustifolia
|authority=Pursh
}} {{Treatment/ID/Synonym
|name=Pontederia cordata var. lanceolata
|authority=(Nuttall) Grisebach
}} {{Treatment/ID/Synonym
|name=Pontederia cordata var. lancifolia
|authority=(Muhlenberg) Torrey
}} {{Treatment/ID/Synonym
|name=Pontederia lanceolata
|authority=(Linnaeus) Farwell
}} {{Treatment/ID/Synonym
|name=Pontederia lancifolia
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Unisema cordata
|authority=unknown
}}
|hierarchy=Pontederiaceae;Pontederia;Pontederia cordata
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Pontederiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Pontederia]]</div><div class="higher-taxon"><small>species</small>[[Pontederia cordata]]</div></div>
|volume=Volume 26
|mention_page=page 46
|treatment_page=page 45
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial, rooted in mud. <b>Vegetative</b> stems contracted, rhizomatous. <b>Flowering</b> stems erect, to 120 cm. <b>Sessile</b> leaves: blade linear. <b>Petiolate</b> leaves emersed; stipule 7–29 cm; petiole distinctly constricted just below blade, to 60 cm; blade lanceolate to cordate, 6–22 × 0.7–12 cm. <b>Spikes</b> with up to several hundred flowers, 2–15 cm; spathes 5–17 cm. <b>Perianth</b> mauve, tube 3–9 mm, limb lobes oblanceolate, 5–8 mm, distal central lobe with 2-lobed yellow spot; proximal stamens 7–13 mm, distal 1.5–6.3 mm; style 3-lobed. <b>Utricles</b> with dentate ridges, 4–6 × 2–3 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering Mar–Nov in Florida; flowering season shorter farther north.
|habitat=Pond and lake margins
|elevation=0–500 m
|distribution=N.B.;N.S.;Ont.;P.E.I.;Que.;Ala.;Ark.;Conn.;Del.;D.C.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.H.;N.J.;N.Y.;N.C.;Ohio;Okla.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.;Mexico;Central America (Belize);South America.
|discussion=<p><i>Pontederia cordata</i> has a large number of synonyms, at the levels of species, variety, and form (see R. M. Lowden 1973 for most names). Almost all these names are based on variations in leaf shape, but extensive morphological variation has been observed within single populations and even in individual plants. Study is needed to determine the cause of the extreme leaf base forms of cuneate on lanceolate blades and cordate on ovate blades. Variation has also been observed in peduncle pubescence. A velutinous peduncle and ovate leaf blade with slightly cuneate base is consistently found among some South American populations, hence recognition there of <i></i></i>var.<i><i> ovalis</i> (Martius) Solms.</p><!--
--><p>The reproductive biology of <i>Pontederia cordata</i> has been well studied (R. Ornduff 1966; S. D. Price and S. C. H. Barrett 1982, 1984). It is a tristylous species, and most populations contain all three morphs (S. D. Price and S. C. H. Barrett 1982). At least some degree of self-incompatibility exists, being strongest with the short-style morphs and weakest with the midstyle morphs (R. Ornduff 1966).</p>
|tables=
|references=
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-->{{#Taxon:
name=Pontederia cordata
|author=
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=Narukila cordata;Pontederia angustifolia;Pontederia cordata var. lanceolata;Pontederia cordata var. lancifolia;Pontederia lanceolata;Pontederia lancifolia;Unisema cordata
|basionyms=
|family=Pontederiaceae
|phenology=Flowering Mar–Nov in Florida; flowering season shorter farther north.
|habitat=Pond and lake margins
|elevation=0–500 m
|distribution=N.B.;N.S.;Ont.;P.E.I.;Que.;Ala.;Ark.;Conn.;Del.;D.C.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.H.;N.J.;N.Y.;N.C.;Ohio;Okla.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.;Mexico;Central America (Belize);South America.
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V26/V26_15.xml
|genus=Pontederia
|species=Pontederia cordata
}}<!--

-->[[Category:Treatment]][[Category:Pontederia]]