View source for Eleocharis uniglumis

{{Treatment/ID
|accepted_name=Eleocharis uniglumis
|accepted_authority=(Link) Schultes
|publications={{Treatment/Publication
|title=Mant.
|place=2: 88. 1824
|year=1824
}}
|common_names=Éléocharide unigume
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Scirpus uniglumis
|authority=Link
|rank=species
|publication_title=Jahrb. Gewächsk.
|publication_place=1(3): 77. 1820
}}
|synonyms={{Treatment/ID/Synonym
|name=Eleocharis halophila
|authority=(Fernald & Brackett) Fernald
|rank=species
}} {{Treatment/ID/Synonym
|name=Eleocharis uniglumis var. halophila
|authority=Fernald & Brackett
|rank=variety
}}
|hierarchy=Cyperaceae;Eleocharis;Eleocharis subg. Eleocharis;Eleocharis sect. Eleocharis;Eleocharis (sect. Eleocharis) ser. Eleocharis;Eleocharis uniglumis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cyperaceae]]</div><div class="higher-taxon"><small>genus</small>[[Eleocharis]]</div><div class="higher-taxon"><small>subgenus</small>[[Eleocharis subg. Eleocharis]]</div><div class="higher-taxon"><small>section</small>[[Eleocharis sect. Eleocharis]]</div><div class="higher-taxon"><small>series</small>[[Eleocharis (sect. Eleocharis) ser. Eleocharis]]</div><div class="higher-taxon"><small>species</small>[[Eleocharis uniglumis]]</div></div>
|volume=Volume 23
|mention_page=page 65, 72, 73, 75, 78
|treatment_page=page 76
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial, mat-forming; rhizomes evident, long, 0.3–1 mm thick, soft to firm, cortex often fugaceous, longer internodes 10–25 mm, scales fugaceous, 5–6 mm, membranous, not fibrous. <b>Culms</b> terete, often with some blunt ridges when dry, (5–)10–60 cm × 0.2–1.5 mm, firm, internally spongy. <b>Leaves</b>: distal leaf sheaths persistent, not splitting, proximally red, distally stramineous to green, often callose, thinly papery to thickly membranous, apex often dark red-brown, obtuse to subacute, tooth absent. <b>Spikelets</b> ovoid to lanceoloid, 5–10 × 2–3(–4) mm, apex acute; proximal scale amplexicaulous, entire; subproximal scale with flower; floral scales often spreading in fruit, 10–20, 3–4 per mm of rachilla, brown to often red-brown, midrib regions mostly stramineous to green, broadly ovate, 3–4 × 1.8–2.5 mm, entire, apex acute to obtuse, often some carinate in distal part of spikelet. <b>Flowers</b>: perianth bristles 0–4(–5), light brown to stramineous, stout, usually unequal, rudimentary to equaling achene; stamens 3; anthers dark yellow to stramineous, 1.2–2 mm; styles 2-fid. <b>Achenes</b> not persistent, dark yellow or medium or dark brown, ellipsoid, obovoid, or obpyriform, biconvex, angles obscure, 1.3–1.8 × 1–1.4 mm, apex rounded, neck absent or short, smooth at 30X, or sometimes finely rugulose at 10–20X with 20 or more horizontal ridges in vertical series. <b>Tubercles</b> brown to whitish, pyramidal, much higher than wide to slightly depressed, sometimes spongy and with vertical rows of depressions, 0.4–0.8 × 0.3–0.8 mm.</span><!--

-->{{Treatment/Body
|phenology=Fruiting summer.
|habitat=Mostly coastal, brackish (to fresh?) shores, marshes
|elevation=0–2300 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Colo.;Del.;Maine;Mass.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;R.I.;S.Dak.;Utah;Va.;Eurasia.
|discussion=<p>Plants treated as <i>Eleocharis uniglumis</i> fall within the large morphologic variation of Eurasian <i>E. uniglumis</i>. Two subspecies and 3 varieties were recognized for northern Europe (S.-O. Strandhede 1966), and five species that were recognized by I. D. Zinserling (1935) were placed in synonymy under <i>E. uniglumis</i> (S.-O. Strandhede 1966). Recognition of infraspecific taxa within North American <i>E. uniglumis</i> is premature. Plants commonly called E. halophila or <i>E. uniglumis</i> var. halophila, found mostly in Atlantic Coastal brackish habitats, have floral scales that are usually narrower and more densely placed on the rachilla than plants usually called <i>E. uniglumis</i>, which are found mostly in the interior; some plants are intermediate in expression of these characters. The achene and tubercle shape characters used by M. L. Fernald (1950) to distinguish <i>E. uniglumis</i> from E. halophila are not valid. In North America, <i>E. uniglumis</i> is difficult to separate from <i>E. erythropoda</i> and <i>E. kamtschatica</i>, in both of which the spikelets have only the proximal scale without a flower (empty) and the proximal scale completely amplexicaulous. <i>Eleocharis uniglumis</i> differs from <i>E. erythropoda</i> only in its broader floral scales, which are less densely placed on the rachilla; it differs from <i>E. kamtschatica</i> only in its smaller tubercles. It is also difficult to separate from some specimens of <i>E. macrostachya</i> in which the spikelets have proximal scales that are sometimes completely amplexicaulous; such plants differ from <i>E. uniglumis</i> only in the absence of a flower in the axil of the subproximal scale of some of the spikelets. I have not seen voucher specimens for the chromosome numbers of 2n = 27 and 28 reported by S.-O. Strandhede (1967) from Massachusetts and Nebraska, which are lower than the 2n = (44–)46(47–88) reported for Europe (S.-O. Strandhede 1965).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Eleocharis uniglumis
|authority=(Link) Schultes
|rank=species
|parent rank=series
|synonyms=Eleocharis halophila;Eleocharis uniglumis var. halophila
|basionyms=Scirpus uniglumis
|family=Cyperaceae
|phenology=Fruiting summer.
|habitat=Mostly coastal, brackish (to fresh?) shores, marshes
|elevation=0–2300 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Colo.;Del.;Maine;Mass.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;R.I.;S.Dak.;Utah;Va.;Eurasia.
|reference=None
|publication title=Mant.
|publication year=1824
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_101.xml
|genus=Eleocharis
|subgenus=Eleocharis subg. Eleocharis
|section=Eleocharis sect. Eleocharis
|series=Eleocharis (sect. Eleocharis) ser. Eleocharis
|species=Eleocharis uniglumis
}}<!--

-->[[Category:Treatment]][[Category:Eleocharis (sect. Eleocharis) ser. Eleocharis]]