View source for Sparganium androcladum

{{Treatment/ID
|accepted_name=Sparganium androcladum
|accepted_authority=(Engelmann) Morong
|publications={{Treatment/Publication
|title=Bulletin of the Torrey Botanical Club
|place=15: 78. 1888
|year=1888
}}
|common_names=Rubanier rameux
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Sparganium simplex var. androcladum
|authority=Engelmann
|rank=variety
|publication_title=in A. Gray, Man. Bot. Northern U.S., Manual, ed.
|publication_place=5, 481. 1867
}}
|synonyms={{Treatment/ID/Synonym
|name=Sparganium americanum var. androcladum
|authority=(Engelmann) Fernald & Eames
|rank=variety
}}
|hierarchy=Sparganiaceae;Sparganium;Sparganium androcladum
|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 androcladum]]</div></div>
|volume=Volume 22
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism fragility;whole_organism some measurement;whole_organism growth form"><b>Plants </b>robust, to 1.2 m;</span> <span class="statement" id="st-d0_s1" data-properties="leaf orientation;leaf location;inflorescence orientation;inflorescence location">leaves and inflorescences erect, emergent.</span> <span class="statement" id="st-d0_s2" data-properties="leaf fragility;leaf shape;leaf shape;leaf length;leaf width"><b>Leaves </b>stiff, keeled from base at least to middle, flattened distally, to 1.2 m × 5–15 mm.</span> <span class="statement" id="st-d0_s3" data-properties="rachis atypical quantity;rachis quantity;rachis architecture;rachis orientation;bract orientation;bract shape"><b>Inflorescences:</b> rachis (0–) 1–3 branched, erect, bracts strongly ascending, not basally inflated;</span> <span class="statement" id="st-d0_s4" data-properties="head architecture;head atypical quantity;head quantity;head position;head arrangement;head architecture;head architecture;head diameter;main rachis atypical quantity;main rachis presence">pistillate heads (1–) 2–4 on main rachis, 0 (–2) on lateral branches, axillary, not contiguous, sessile or short-peduncled, 2.5–3.5 cm diam. in fruit;</span> <span class="statement" id="st-d0_s5" data-properties="head architecture;head quantity;head arrangement;main rachis quantity">staminate heads 3–8 on main rachis, 1–6 on lateral rachises, most not contiguous.</span> <span class="statement" id="st-d0_s6" data-properties="tepal shape;subapical dark-spot prominence"><b>Flowers:</b> tepals often with prominent subapical dark spot, subentire to entire;</span> <span class="statement" id="st-d0_s7" data-properties="stigma quantity;stigma arrangement or course or shape">stigma 1, linear.</span> <span class="statement" id="st-d0_s8" data-properties="fruit coloration;fruit reflectance;fruit reflectance;fruit architecture;fruit shape;fruit size;body shape;body length;body width;body shape"><b>Fruits </b>brown, proximally dull, distally shiny, subsessile to short-stipitate, fusiform, usually constricted near equator, body not strongly faceted, 5–7 × 2.5–3 mm, tapering to beak;</span> <span class="statement" id="st-d0_s9" data-properties="beak course;beak shape;beak some measurement">beak often curved and hooked, 4–7 mm;</span> <span class="statement" id="st-d0_s10" data-properties="tepal fixation">tepals attached at base, reaching to equator or somewhat beyond.</span> <span class="statement" id="st-d0_s11" data-properties="seed quantity"><b>Seeds </b>1.</span><!--

-->{{Treatment/Body
|phenology=Flowering late spring–summer (Apr–Jul).
|habitat=Shores and shallow, quiet, circumneutral waters
|elevation=0–800 m
|distribution=Ont.;Que.;Ark.;Conn.;Ill.;Ind.;Iowa;Ky.;Maine;Mass.;Mich.;Minn.;Mo.;N.H.;N.J.;N.Y.;Ohio;Okla.;Pa.;R.I.;Tenn.;Vt.;W.Va.;Wis.
|discussion=<p>Sparganium androcladum is less variable than the similar and more common S. americanum, from which it is distinguished by its generally larger size and more robust habit; leaves stiffer, wider, more strongly keeled; inflorescence branches usually without pistillate heads, the bracts ascending; fruiting heads larger; fruits distally shiny, the beak longer and hooked. Immature fruits of S. androcladum resemble mature fruits of S. americanum. Some specimens will not key readily to either species. The complex nomenclatural history is discussed by C. D. K. Cook and M. S. Nicholls (1987).</p><!--
--><p>Sparganium androcladum has an unusual, discontinuous distribution, which is wholly within the range of S. americanum, except in the central Mississippi Valley (M. L. Fernald 1922b). In the absence of convincing specimens, the presence of S. androcladum in Virginia cannot be confirmed, although E. O. Beal (1960) reported it there, and it occurs nearby in West Virginia.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Sparganium androcladum
|authority=(Engelmann) Morong
|rank=species
|parent rank=genus
|synonyms=Sparganium americanum var. androcladum
|basionyms=Sparganium simplex var. androcladum
|family=Sparganiaceae
|phenology=Flowering late spring–summer (Apr–Jul).
|habitat=Shores and shallow, quiet, circumneutral waters
|elevation=0–800 m
|distribution=Ont.;Que.;Ark.;Conn.;Ill.;Ind.;Iowa;Ky.;Maine;Mass.;Mich.;Minn.;Mo.;N.H.;N.J.;N.Y.;Ohio;Okla.;Pa.;R.I.;Tenn.;Vt.;W.Va.;Wis.
|reference=None
|publication title=Bulletin of the Torrey Botanical Club
|publication year=1888
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/62857cf6bca5c4637d27b113da92d27dbf9962f4/V22/V22_26.xml
|genus=Sparganium
|species=Sparganium androcladum
|beak course=curved
|beak shape=hooked
|beak some measurement=4mm;7mm
|body length=5mm;7mm
|body shape=tapering;faceted
|body width=2.5mm;3mm
|bract orientation=ascending
|bract shape=inflated
|fruit architecture=subsessile;short-stipitate
|fruit coloration=brown
|fruit reflectance=shiny;dull
|fruit shape=fusiform
|fruit size=constricted
|head architecture=staminate;short-peduncled;sessile;pistillate
|head arrangement=not contiguous;not contiguous
|head atypical quantity=1;2
|head diameter=2.5cm;3.5cm
|head position=axillary
|head quantity=3;8
|inflorescence location=emergent
|inflorescence orientation=erect
|leaf fragility=stiff
|leaf length=0m;1.2m
|leaf location=emergent
|leaf orientation=erect
|leaf shape=flattened;keeled
|leaf width=5mm;15mm
|main rachis atypical quantity=0;2
|main rachis presence=absent
|main rachis quantity=1;6
|rachis architecture=branched
|rachis atypical quantity=0;1
|rachis orientation=erect
|rachis quantity=1;3
|seed quantity=1
|stigma arrangement or course or shape=linear
|stigma quantity=1
|subapical dark-spot prominence=prominent
|tepal fixation=attached
|tepal shape=subentire;entire
|whole_organism fragility=robust
|whole_organism growth form=plant
|whole_organism some measurement=0m;1.2m
}}<!--

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