View source for Eleocharis montevidensis

{{Treatment/ID
|accepted_name=Eleocharis montevidensis
|accepted_authority=Kunth
|publications={{Treatment/Publication
|title=Enum. Pl.
|place=2: 144. 1837
|year=1837
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Eleocharis arenicola
|authority=Torrey
|rank=species
}} {{Treatment/ID/Synonym
|name=Eleocharis montana subsp. montevidensis
|authority=(Kunth) Osten
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Eleocharis palmeri
|authority=Svenson
|rank=species
}}
|hierarchy=Cyperaceae;Eleocharis;Eleocharis subg. Eleocharis;Eleocharis sect. Eleocharis;Eleocharis (sect. Eleocharis) ser. Eleocharis;Eleocharis montevidensis
|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 montevidensis]]</div></div>
|volume=Volume 23
|mention_page=page 66, 68, 79, 81, 82, 83
|treatment_page=page 80
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial, mat-forming; rhizomes evident, long, 0.7–2 mm thick, firm, cortex persistent, longer internodes 1–2 cm, scales often fugaceous, 6–8 mm, membranous, not fibrous. <b>Culms</b> terete or cross section elliptic or rectangular, with 5–10 blunt ridges when dry, 25–50 cm × 0.5–1.2 mm, firm to hard, spongy. <b>Leaves</b>: distal leaf sheaths persistent, not splitting, mostly proximally dark red, distally red to brown or green, thinly papery, apex usually red-brown, often callose, subtruncate to obtuse, tooth usually present on some or all culms, to 0.9 mm. <b>Spikelets</b> usually ovoid or ellipsoid to subcylindric, rarely lanceoloid, 4–12 × (1.5–)2–3 mm, apex rounded to acute; proximal scale amplexicaulous or clasping over 3/4 of culm, entire; subproximal scale empty or with flower; floral scales appressed in fruit, 30–100, 6–10 per mm of rachilla, orange-brown, midrib regions often greenish, oblong to ovate, 1.5–2.5 × 1–1.5 mm, apex entire, broadly rounded, sometimes acute in distal part of spikelet, usually horizontally wrinkled and recurved, often carinate in distal part of spikelet. <b>Flowers</b>: perianth bristles 5–6(–7), stramineous to medium brown, stout, often unequal, much shorter than to equaling achene, rarely all rudimentary; stamens 3; anthers dark yellow to stramineous, 0.8–1.5 mm; styles 3-fid or some 2-fid. <b>Achenes</b> falling with scales, dark brown, obovoid to obpyriform, compressed trigonous, angles evident to obscure, 0.7–1 × 0.65–0.8 mm, neck absent to sometimes long, finely rugulose at 10–30X, over 20 horizontal ridges in vertical series, and/or minutely cancellate at 20–30X. <b>Tubercles</b> brown to whitish, pyramidal, as high as wide or sometimes greatly depressed, (0.1–)0.25–0.3 × 0.2–0.3 mm. <b>2n</b> = 20.</span><!--

-->{{Treatment/Body
|phenology=Fruiting spring–fall.
|habitat=Wet soil, fresh ponds, lakes, streams, springs, seeps, marshes, ditches, grasslands
|elevation=0–2300 m
|distribution=Ala.;Ariz.;Calif.;Fla.;Kans.;La.;Miss.;N.Mex.;N.C.;Okla.;S.C.;Tex.;Mexico;South America.
|discussion=<p>The name <i>Eleocharis montana</i> was long misapplied to <i>E. montevidensis</i>. The type of <i>E. palmeri</i>, recognized as a species (H. K. Svenson 1957), is indistinguishable from specimens of <i>E. montevidensis</i>. <i>Eleocharis montevidensis</i> is extremely variable; the broadly rounded, usually wrinkled and recurved floral scales are diagnostic. Achenes often fail to form. <i>Eleocharis montevidensis</i> is apparently closely related to <i>E. parishii</i>, in which the floral scales are less densely placed on the rachilla and acute to rounded, and the spikelets are narrowly lanceoloid to cylindric. In the absence of achenes and rhizomes, some specimens of <i>E. montevidensis</i> are easily mistaken for <i>E. tricostata</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Eleocharis montevidensis
|authority=Kunth
|rank=species
|parent rank=series
|synonyms=Eleocharis arenicola;Eleocharis montana subsp. montevidensis;Eleocharis palmeri
|basionyms=
|family=Cyperaceae
|phenology=Fruiting spring–fall.
|habitat=Wet soil, fresh ponds, lakes, streams, springs, seeps, marshes, ditches, grasslands
|elevation=0–2300 m
|distribution=Ala.;Ariz.;Calif.;Fla.;Kans.;La.;Miss.;N.Mex.;N.C.;Okla.;S.C.;Tex.;Mexico;South America.
|reference=None
|publication title=Enum. Pl.
|publication year=1837
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V23/V23_107.xml
|genus=Eleocharis
|subgenus=Eleocharis subg. Eleocharis
|section=Eleocharis sect. Eleocharis
|series=Eleocharis (sect. Eleocharis) ser. Eleocharis
|species=Eleocharis montevidensis
}}<!--

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