View source for Eleocharis engelmannii

{{Treatment/ID
|accepted_name=Eleocharis engelmannii
|accepted_authority=Steudel
|publications={{Treatment/Publication
|title=Syn. Pl. Glumac.
|place=2: 79. 1855
|year=1855
}}
|common_names=Engelmann’s spike-rush
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Eleocharis engelmannii var. detonsa
|authority=A. Gray
}}{{Treatment/ID/Synonym
|name=Eleocharis engelmannii var. monticola
|authority=(Fernald) Svenson
}}{{Treatment/ID/Synonym
|name=Eleocharis engelmannii var. robusta
|authority=Fernald
}}{{Treatment/ID/Synonym
|name=Eleocharis monticola
|authority=unknown
}}{{Treatment/ID/Synonym
|name=Eleocharis monticola var. leviseta
|authority=Fernald
}}{{Treatment/ID/Synonym
|name=Eleocharis ovata var. detonsa
|authority=(A. Gray) Mohlenbrock
}}
|hierarchy=Cyperaceae;Eleocharis;Eleocharis subg. Eleocharis;Eleocharis sect. Eleogenus;Eleocharis (sect. Eleogenus) ser. Ovatae;Eleocharis engelmannii
|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. Ovatae]]</div><div class="higher-taxon"><small>species</small>[[Eleocharis engelmannii]]</div></div>
|volume=Volume 23
|mention_page=page 64, 65, 105
|treatment_page=page 104
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Culms </b>2–40 cm × 0.5–1.5(–2) mm. <b>Leaves</b>: apex of distal leaf sheath obtuse to acute, tooth to 0.3 mm. <b>Spikelets</b> lanceoloid to subcylindric or ovoid, 5–10(–20) × 2–3(–4) mm, apex acute (to rounded); proximal scale empty, encircling ca. 2/3 of culm; floral scales 25–100(–200), 8–12 per mm of rachilla, orangebrown to stramineous, 2(–2.5) × 1–1.3 mm, midribs mostly keeled, ovate, apex narrowly rounded to subacute. <b>Flowers</b>: perianth bristles present or often absent, 5–8, brown, stout, rudimentary to slightly exceeding tubercle; stamens (2–)3; anthers brown to yellow, 0.3–0.7(–1) mm; styles 2–3-fid. <b>Achenes</b> 0.9–1.1(–1.5) × 0.7–1.1 mm. <b>Tubercles</b> depressed, subdeltoid, 0.1–0.3(–0.4) × 0.6–0.9(–1) mm, 1/10–2/5 as high as wide, 1/4 or less as high as achene, 9/10 as wide as achene, very rarely 2/5 as high as achene (in E. engelmannii var. robusta). <b>2n</b> = 10.</span><!--

-->{{Treatment/Body
|phenology=Fruiting spring–fall.
|habitat=Fresh shores, marshes, disturbed places
|elevation=30–2400 m
|distribution=Alta.;B.C.;Man.;Ont.;Ala.;Ariz..;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;N.H.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;Tenn.;Tex.;Va.;Wash.;W.Va.;Wis.
|discussion=<p>Robust plants known only from Missouri and described as Eleocharis engelmannii var. robusta have well-developed caudices, culms to 2 mm wide (pressed), spikelets to 2 cm, floral scales to 2.5 mm and slightly cartilaginous, styles mostly trifid, achenes to 1.5 × 1 mm, and tubercles 0.3–0.5 × 0.7–1 mm and to 2/5 as high as achene. Some specimens are intermediate between E. engelmannii and E. obtusa, or rarely with E. lanceolata. I have not seen specimens to verify literature reports of E. engelmannii from Manitoba, Connecticut, Delaware, Idaho, New Hampshire, North Carolina, Oregon, Rhode Island, South Carolina, South Dakota, or Vermont.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Eleocharis engelmannii
|author=
|authority=Steudel
|rank=species
|parent rank=series
|synonyms=Eleocharis engelmannii var. detonsa;Eleocharis engelmannii var. monticola;Eleocharis engelmannii var. robusta;Eleocharis monticola;Eleocharis monticola var. leviseta;Eleocharis ovata var. detonsa
|basionyms=
|family=Cyperaceae
|phenology=Fruiting spring–fall.
|habitat=Fresh shores, marshes, disturbed places
|elevation=30–2400 m
|distribution=Alta.;B.C.;Man.;Ont.;Ala.;Ariz..;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;N.H.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;Tenn.;Tex.;Va.;Wash.;W.Va.;Wis.
|reference=None
|publication title=Syn. Pl. Glumac.
|publication year=1855
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V23/V23_158.xml
|genus=Eleocharis
|subgenus=Eleocharis subg. Eleocharis
|section=Eleocharis sect. Eleogenus
|series=Eleocharis (sect. Eleogenus) ser. Ovatae
|species=Eleocharis engelmannii
}}<!--

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