View source for Sparganium angustifolium

{{Treatment/ID
|accepted_name=Sparganium angustifolium
|accepted_authority=Michaux
|publications={{Treatment/Publication
|title=Flora Boreali-Americana
|place=2: 189. 1803
|year=1803
}}
|common_names=Rubanier à feuilles étroites
|basionyms={{Treatment/ID/Basionym
|name=Sparganium multipedunculatum
|authority=
|rank=species
|publication_title=S. simplex Hudson var. multipedunculatum Morong
|publication_place=
}}
|synonyms={{Treatment/ID/Synonym
|name=Sparganium angustifolium var. multipedunculatum
|authority=(Morong) Brayshaw
|rank=variety
}} {{Treatment/ID/Synonym
|name=Sparganium emersum var. multipedunculatum
|authority=(Morong) Reveal
|rank=variety
}}
|hierarchy=Sparganiaceae;Sparganium;Sparganium angustifolium
|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 angustifolium]]</div></div>
|volume=Volume 22
|mention_page=
|treatment_page=page 276
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism size;whole_organism length or size;whole_organism growth form"><b>Plants </b>slender, to more than 2 m long;</span> <span class="statement" id="st-d0_s1" data-properties="leaf growth form or location;inflorescence growth form or location">leaves and inflorescences usually floating.</span> <span class="statement" id="st-d0_s2" data-properties="leaf texture;leaf shape;leaf shape;leaf atypical length;leaf length;leaf atypical width;leaf width"><b>Leaves </b>limp, unkeeled, flat to planoconvex, 0.2–0.8 (–2.5) m × 2–5 (–10) mm.</span> <span class="statement" id="st-d0_s3" data-properties="rachis architecture;rachis course;part reproduction;part orientation;surface habitat"><b>Inflorescences:</b> rachis unbranched, flexuous, its fertile part usually erect at water surface;</span> <span class="statement" id="st-d0_s4" data-properties="bract orientation;lower bract shape">bracts ascending, lower bracts inflated near base;</span> <span class="statement" id="st-d0_s5" data-properties="head architecture;head quantity;head position;head arrangement;head architecture;head position;head architecture;head diameter">pistillate heads 2–5, at least some supra-axillary, not contiguous, sessile or most proximal peduncled (often prominently so in deeper water), 1–3 cm diam. in fruit;</span> <span class="statement" id="st-d0_s6" data-properties="head architecture;head atypical quantity;head quantity;head arrangement;head arrangement;head shape;distalmost head architecture">staminate heads (1–) 2–4, contiguous and appearing as one elongate head, not contiguous with distalmost pistillate head.</span> <span class="statement" id="st-d0_s7" data-properties="tepal shape;stigma position;stigma coloration;stigma architecture;stigma quantity"><b>Flowers:</b> tepals without subapical dark spot, erose-tipped, stigma 1, lanceovate.</span> <span class="statement" id="st-d0_s8" data-properties="fruit coloration;fruit reflectance;fruit architecture;fruit shape;fruit shape;body size;body some measurement;body shape"><b>Fruits </b>reddish to brownish, dull, short-stipitate, ellipsoid to fusiform, not faceted, body constricted at equator, 3–7 mm, tapering to beak;</span> <span class="statement" id="st-d0_s9" data-properties="beak course;beak some measurement">beak straight, 1.5–2 mm;</span> <span class="statement" id="st-d0_s10" data-properties="tepal fixation;tepal position relational">tepals attached at base, reaching about to equator.</span> <span class="statement" id="st-d0_s11" data-properties="seed quantity;2n chromosome quantity"><b>Seeds </b>1.2n = 30.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall (Jun–Oct southwestward, Jul–Aug northward).
|habitat=Acid, oligotrophic waters of lakes, ponds, ditches, and streams, usually in shallow waters but to 2.5 m deep
|elevation=0–4000 m
|distribution=Greenland;St. Pierre and Miquelon;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Conn.;Idaho;Maine;Mass.;Mich.;Minn.;Mont.;Nev.;N.H.;N.Mex.;N.Y.;Oreg.;Utah;Vt.;Wash.;Wis.;Wyo.;circumboreal
|discussion=<p>Sparganium angustifolium is sometimes abundant, its leaves then covering the surface. It is a relatively invariable species that forms fertile hybrids with S. emersum (C. D. K. Cook and M. S. Nicholls 1986), from which it is distinguished by its contiguous staminate heads and flat to plano-convex leaves. See the discussion under S. emersum.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Sparganium angustifolium
|authority=Michaux
|rank=species
|parent rank=genus
|synonyms=Sparganium angustifolium var. multipedunculatum;Sparganium emersum var. multipedunculatum
|basionyms=Sparganium multipedunculatum
|family=Sparganiaceae
|phenology=Flowering summer–fall (Jun–Oct southwestward, Jul–Aug northward).
|habitat=Acid, oligotrophic waters of lakes, ponds, ditches, and streams, usually in shallow waters but to 2.5 m deep
|elevation=0–4000 m
|distribution=Greenland;St. Pierre and Miquelon;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Conn.;Idaho;Maine;Mass.;Mich.;Minn.;Mont.;Nev.;N.H.;N.Mex.;N.Y.;Oreg.;Utah;Vt.;Wash.;Wis.;Wyo.;circumboreal
|reference=None
|publication title=Flora Boreali-Americana
|publication year=1803
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/62857cf6bca5c4637d27b113da92d27dbf9962f4/V22/V22_113.xml
|genus=Sparganium
|species=Sparganium angustifolium
|2n chromosome quantity=30
|beak course=straight
|beak some measurement=1.5mm;2mm
|body shape=tapering
|body size=constricted
|body some measurement=3mm;7mm
|bract orientation=ascending
|distalmost head architecture=pistillate
|fruit architecture=short-stipitate
|fruit coloration=reddish;brownish
|fruit reflectance=dull
|fruit shape=not faceted;ellipsoid;fusiform
|head architecture=staminate;peduncled;sessile;pistillate
|head arrangement=not contiguous;contiguous;not contiguous
|head atypical quantity=1;2
|head diameter=1cm;3cm
|head position=proximal;supra-axillary
|head quantity=2;4
|head shape=elongate
|inflorescence growth form or location=floating
|leaf atypical length=0.8m;2.5m
|leaf atypical width=5mm;10mm
|leaf growth form or location=floating
|leaf length=0.2m;0.8m
|leaf shape=flat;planoconvex
|leaf texture=limp
|leaf width=2mm;5mm
|lower bract shape=inflated
|part orientation=erect
|part reproduction=fertile
|rachis architecture=unbranched
|rachis course=flexuous
|seed quantity=1
|stigma architecture=erose-tipped
|stigma coloration=dark spot
|stigma position=subapical
|stigma quantity=1
|surface habitat=water
|tepal fixation=attached
|tepal position relational=reaching
|tepal shape=lanceovate
|whole_organism growth form=plant
|whole_organism length or size=long
|whole_organism size=slender
}}<!--

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