View source for Sparganium fluctuans

{{Treatment/ID
|accepted_name=Sparganium fluctuans
|accepted_authority=(Engelmann ex Morong) B. L. Robinson
|publications={{Treatment/Publication
|title=Rhodora
|place=7: 60. 1905
|year=1905
}}
|common_names=Rubanier flottant
|basionyms={{Treatment/ID/Synonym
|name=Sparganium androcladum var. fluctuans
|authority=Engelmann ex Morong
}}
|synonyms=
|hierarchy=Sparganiaceae;Sparganium;Sparganium fluctuans
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Sparganiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Sparganium]]</div><div class="higher-taxon"><small>species</small>[[Sparganium fluctuans]]</div></div>
|volume=Volume 22
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>limp, to more than 1 m long; leaves and inflorescences floating. <b>Leaves</b> limp, unkeeled, flat, mostly 0.6–1 m × 4–10 mm. <b>Inflorescences</b>: rachis 0–2-branched, distal part erect at water surface; bracts ascending, not inflated at base; pistillate heads 0–2 on main rachis, 1–2 on secondary rachises, axillary or supra-axillary, often some contiguous or nearly so, especially in fruit, sessile, 1.5–2.3 cm diam. in fruit; staminate heads 3–6 on main rachis, 1–4 on secondary rachises, contiguous or not, but not contiguous with distalmost pistillate head. <b>Flowers</b>: tepals often with prominent apical dark spot, apically erose to fimbriate; stigmas 1, linear-lanceolate. <b>Fruits</b> eventually dark reddish brown, dull, stipitate, elliptic to obovoid or fusiform, body not faceted, sometimes constricted near equator, 2–5 × 1.5–2 mm, tapering to beak; beak curved, 2–3.5 mm; tepals borne at middle of fruit stipe, basally adnate to stipe, reaching about nearly to equator. <b>Seeds</b> 1.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer (Jul–Aug).
|habitat=Quiet, cold, acidic -to -neutral oligotrophic waters to 2 m deep but usually less, abundant in some areas but not in others, sometimes covering the water with its strap-shaped leaves
|elevation=0–600 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;P.E.I.;Que.;Sask.;Conn.;Maine;Mass.;Mich.;Minn.;N.H.;N.J.;N.Y.;Pa.;Vt.;Wis.
|discussion=<p>The tepals are usually adnate to the fruit stipe for about half their length, but in our other species they are free from it.</p><!--
--><p>Sparganium fluctuans is not known to hybridize. When vegetative, it is sometimes confused with S. angustifolium, but the floating leaves of that species are usually less than 5 mm wide and plano-convex. Sparganium fluctuans is more robust than the grasslike S. natans, with which it sometimes grows.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Sparganium fluctuans
|author=
|authority=(Engelmann ex Morong) B. L. Robinson
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Sparganium androcladum var. fluctuans
|family=Sparganiaceae
|phenology=Flowering summer (Jul–Aug).
|habitat=Quiet, cold, acidic -to -neutral oligotrophic waters to 2 m deep but usually less, abundant in some areas but not in others, sometimes covering the water with its strap-shaped leaves
|elevation=0–600 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;P.E.I.;Que.;Sask.;Conn.;Maine;Mass.;Mich.;Minn.;N.H.;N.J.;N.Y.;Pa.;Vt.;Wis.
|reference=None
|publication title=Rhodora
|publication year=1905
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V22/V22_270.xml
|genus=Sparganium
|species=Sparganium fluctuans
}}<!--

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