View source for Schoenoplectus heterochaetus

{{Treatment/ID
|accepted_name=Schoenoplectus heterochaetus
|accepted_authority=(Chase) Soják
|publications={{Treatment/Publication
|title=Cas. Nár. Mus., Odd. Prír.
|place=140: 127. 1972
|year=1972
}}
|common_names=Slender bulrush;scirpe à sois inégales
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Scirpus heterochaetus
|authority=Chase
|rank=species
|publication_title=Rhodora
|publication_place=6: 70, plate 53, fig. d. 1904
}}
|synonyms={{Treatment/ID/Synonym
|name=Scirpus lacustris var. tenuiculmis
|authority=E. Sheldon
|rank=variety
}}
|hierarchy=Cyperaceae;Schoenoplectus;Schoenoplectus sect. Schoenoplectus;Schoenoplectus heterochaetus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cyperaceae]]</div><div class="higher-taxon"><small>genus</small>[[Schoenoplectus]]</div><div class="higher-taxon"><small>section</small>[[Schoenoplectus sect. Schoenoplectus]]</div><div class="higher-taxon"><small>species</small>[[Schoenoplectus heterochaetus]]</div></div>
|volume=Volume 23
|mention_page=page 45, 47, 48, 50
|treatment_page=page 49
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Rhizomes </b>5–8 mm diam.; scales longer than internodes, disintegrating to fibers. <b>Culms</b> cylindric, 1.5–2.5 m × 4–8 mm. <b>Leaves</b> basal; sheaths often separating from culm, resembling blade, sometimes reddish proximally, front membranous-translucent, splitting, and delicately pinnate-fibrillose, orifice adaxially deeply V-shaped; ligules entire, 1 mm; blades 1–2, thinly C-shaped to thin and dorsiventrally flat in cross section, much shorter to longer than sheath, distal blade to 220 × 5 mm. <b>Inflorescences</b> 2× branched, open, plano- to concavo-convex, to 9 cm; proximal bract usually erect, thickly C-shaped to subterete in cross section, 1–15 cm, margins often scabridulous. <b>Spikelets</b> 5–30, solitary or rarely 2 together, 5–15 × 3–4 mm; scales light orange-brown to nearly colorless, usually obscurely lineolate-spotted, midribs often greenish, ovate-oblong, 3–4 × 1.5 mm, sparsely reddish- or straw-colored-scabrous distally on awn, sometimes midrib, and rarely adjacent parts of sides, margins ciliate, hairs contorted, flanks veinless, apex obtuse, notch 0.5 mm deep, awn straight to slightly contorted, 0.3–1 mm. <b>Flowers</b>: perianth members 4(–5), brown, bristlelike, equaling achene body or adaxial and abaxial much shorter, sparsely retrorsely spinulose; anthers 2 mm; styles 3-fid. <b>Achenes</b> dark gray-brown, compressed-trigonous, obovoid, 2.2–3.2 × 1.4–1.9 mm; beak 0.3–1 mm. <b>2n</b> = 38.</span><!--

-->{{Treatment/Body
|phenology=Fruiting summer.
|habitat=Fresh, often calcareous marshes and lakes, often emergent in water to 1.5 m
|elevation=10–500(–2000) m
|distribution=Alta.;Man.;Ont.;Que.;Calif.;Idaho;Ill.;Iowa;Kans.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.Y.;N.Dak.;Okla.;Oreg.;Pa.;S.Dak.;Vt.;Wis.;Wyo.
|discussion=<p><i>Schoenoplectus heterochaetus</i> hybridizes with <i>S. acutus</i> and <i>S. tabernaemontani</i> (see comment under 1. <i>S. tabernaemontani</i>).</p><!--
--><p>The Michigan record is dubious, the Oregon record is from 1895, and reports from Washington are apparently based on misidentified specimens. Some specimens from scattered localities in Eurasia may be <i>Schoenoplectus heterochaetus</i>.</p><!--
--><p><i>Schoenoplectus</i> lacustris (Linnaeus) Palla, of Eurasia, was collected near Camden, New Jersey, in 1889 and 1891; it now appears to be extirpated. It is also in cultivation in North America and should be sought. It is similar to <i>S. heterochaetus</i>, from which it differs in its often clustered spikelets, six long perianth bristles, and ability to form submerged ribbon-leaved forms, especially in flowing water in streams. 2n = 42.</p><!--
--><p><i>Schoenoplectus</i> lacustris hybridizes in Europe with <i>S. tabernaemontani</i> and <i>S. triqueter</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Schoenoplectus heterochaetus
|authority=(Chase) Soják
|rank=species
|parent rank=section
|synonyms=Scirpus lacustris var. tenuiculmis
|basionyms=Scirpus heterochaetus
|family=Cyperaceae
|phenology=Fruiting summer.
|habitat=Fresh, often calcareous marshes and lakes, often emergent in water to 1.5 m
|elevation=10–500(–2000) m
|distribution=Alta.;Man.;Ont.;Que.;Calif.;Idaho;Ill.;Iowa;Kans.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.Y.;N.Dak.;Okla.;Oreg.;Pa.;S.Dak.;Vt.;Wis.;Wyo.
|reference=None
|publication title=Cas. Nár. Mus., Odd. Prír.
|publication year=1972
|special status=Illustrated;Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_68.xml
|genus=Schoenoplectus
|section=Schoenoplectus sect. Schoenoplectus
|species=Schoenoplectus heterochaetus
}}<!--

-->[[Category:Treatment]][[Category:Schoenoplectus sect. Schoenoplectus]]