View source for Eleocharis flavescens

{{Treatment/ID
|accepted_name=Eleocharis flavescens
|accepted_authority=(Poiret) Urban
|publications={{Treatment/Publication
|title=Symb. Antill.
|place=4: 116. 1903
|year=1903
}}
|common_names=Pale spike-rush;wrinkle-sheathed spike-rush
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Scirpus flavescens
|authority=Poiret
|rank=species
|publication_title=in J. Lamarck et al., Encycl.
|publication_place=6: 756. 1804
}}
|synonyms=
|hierarchy=Cyperaceae;Eleocharis;Eleocharis subg. Eleocharis;Eleocharis sect. Eleogenus;Eleocharis (sect. Eleogenus) ser. Maculosae;Eleocharis flavescens
|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. Eleogenus]]</div><div class="higher-taxon"><small>series</small>[[Eleocharis (sect. Eleogenus) ser. Maculosae]]</div><div class="higher-taxon"><small>species</small>[[Eleocharis flavescens]]</div></div>
|volume=Volume 23
|mention_page=page 63, 101
|treatment_page=page 100
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>with creeping rhizomes 0.5–1 mm thick. <b>Culms</b> 3–42 cm × 0.3–0.6 mm. <b>Leaves</b>: distal leaf sheaths often disintegrating, thinly membranous-translucent, inflated distally, often wrinkled, apex blunt. <b>Spikelets</b> ellipsoid, 1.5–9 × 1–3.5 mm, apex acute to acuminate; proximal scale without flower, not amplexicaulous; floral scales to 65, 5–7 per mm of rachilla, loosely appressed to appressed, elliptic, 1–3 × 0.4–1.6 mm, membranous, apex acute. <b>Flowers</b>: perianth bristles (0–)5–8, typically 7, white to stramineous, spinules dense to few; styles 2-fid, rarely 3-fid. <b>Achenes</b> stramineous to green or dark brown, biconvex, rarely trigonous, obovoid to obpryiform, 0.4–1.1 × 0.3–0.8 mm, very finely reticulate at 40X. <b>Tubercles</b> whitish to stramineous or green, 0.2–0.7 × 0.2–0.4 mm, apex acute to acuminate.</span><!--

-->{{Treatment/Body
|distribution=N.B.;N.S.;Ont.;Que.;Ala.;Ariz.;Ark.;Calif.;Conn.;Del.;Fla.;Ga.;Idaho;Ill.;Ind.;La.;Maine;Mass.;Md.;Mich.;Minn.;Miss.;Mont.;N.C.;N.H.;N.J.;N.Y.;Ohio;Pa.;R.I.;S.C.;Tex.;Utah;Va.;Vt.;Wis.;Wyo.;temperate North America;West Indies;South America.
|discussion=<p>Varieties 2 (2 in the flora).</p><!--
--><p>The varieties of <i>Eleocharis flavescens</i> are difficult to delimit, especially in the south, and identifications of some specimens to variety are problematic.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Achenes red-brown to dark brown when ripe, 0.4–0.8(–1.1) × 0.3–0.6 mm, apex rarely highly constricted proximal to tubercle; flowers with perianth bristles typically shorter than to as long as achene.
|[[Eleocharis flavescens var. flavescens|Eleocharis flavescens var. flavescens]]
|-id=key-0-1
|1
|Achenes green to golden-brown, 0.5–1.1 × 0.4–0.8 mm, often highly constricted proximal to tubercle; flowers with perianth bristles typically longer than achene.
|[[Eleocharis flavescens var. olivacea|Eleocharis flavescens var. olivacea]]
|}
</div></div><!--

-->{{#Taxon:
name=Eleocharis flavescens
|authority=(Poiret) Urban
|rank=species
|parent rank=series
|synonyms=
|basionyms=Scirpus flavescens
|family=Cyperaceae
|distribution=N.B.;N.S.;Ont.;Que.;Ala.;Ariz.;Ark.;Calif.;Conn.;Del.;Fla.;Ga.;Idaho;Ill.;Ind.;La.;Maine;Mass.;Md.;Mich.;Minn.;Miss.;Mont.;N.C.;N.H.;N.J.;N.Y.;Ohio;Pa.;R.I.;S.C.;Tex.;Utah;Va.;Vt.;Wis.;Wyo.;temperate North America;West Indies;South America.
|reference=None
|publication title=Symb. Antill.
|publication year=1903
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_148.xml
|genus=Eleocharis
|subgenus=Eleocharis subg. Eleocharis
|section=Eleocharis sect. Eleogenus
|series=Eleocharis (sect. Eleogenus) ser. Maculosae
|species=Eleocharis flavescens
}}<!--

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[[Category:Treatment]]
[[Category:Eleocharis (sect. Eleogenus) ser. Maculosae]]
[[Category:Revised Since Print]]