View source for Echinochloa colona

{{Treatment/ID
|accepted_name=Echinochloa colona
|accepted_authority=(L.) Link
|publications=
|common_names=Awnless barnyard grass
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Echinochloa colonum
|authority=unknown
}}
|hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Paniceae;Echinochloa;Echinochloa colona
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Panicoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Paniceae]]</div><div class="higher-taxon"><small>genus</small>[[Echinochloa]]</div><div class="higher-taxon"><small>species</small>[[Echinochloa colona]]</div></div>
|volume=Volume 25
|mention_page=
|treatment_page=page 398
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>annual; erect or decumbent, cespitose or spreading, rooting from the lower cauline nodes. <b>Culms</b> 10-70 cm; lower nodes glabrous or hispid, hairs appressed; upper nodes glabrous. <b>Sheaths</b> glabrous; ligules absent, ligule region frequently brown-purple; blades 8-22 cm long, 3-6(10) mm wide, mostly glabrous, sometimes hispid, hairs papillose-based on or near the margins. <b>Panicles</b> 2-12 cm, erect, rachises glabrous or sparsely hispid; primary branches 5-10, 0.7-2(4) cm, erect to ascending, spikelike, somewhat distant, without secondary branches, axes glabrous or sparsely hispid, hairs 1.5-2.5 mm, papillose-based. <b>Spikelets</b> 2-3 mm, disarticulating at maturity, pubescent to hispid, hairs usually not papillose-based, tips acute to cuspidate. <b>Lower</b> glumes about 1/2 as long as the spikelets; upper glumes about as long as the spikelets; lower florets usually sterile, occasionally staminate; lower lemmas unawned, similar to the upper glumes; lower paleas subequal to the lemmas; upper lemmas 2.6-2.9 mm, not or scarcely exceeding the upper glumes, elliptic, coriaceous portion rounded distally, passing abruptly into a sharply differentiated, membranous, soon-withering tip; anthers 0.7-0.8 mm. <b>Caryopses</b> 1.2-1.6 mm, whitish; embryos 63-83% as long as the caryopses. <b>2n</b> = 54.</span><!--

-->{{Treatment/Body
|distribution=Mont.;Oreg.;Wash.;Pacific Islands (Hawaii);Fla.;N.J.;N.Mex.;Tex.;La.;Tenn.;N.C.;S.C.;Pa.;Va.;Calif.;Puerto Rico;Virgin Islands;Ala.;Ark.;Vt.;Ill.;Ga.;Mass.;Ariz.;Md.;Okla.;Mo.;Kans.;Miss.;Ky.
|discussion=<p><i>Echinochloa colona</i> is widespread in tropical and subtropical regions. It is adventive and weedy in North America, growing in low-lying, damp to wet, disturbed areas, including rice fields. The unbranched, rather widely-spaced panicle branches make this one of the easier species of <i>Echinochloa</i> to recognize.</p><!--
--><p>Hitchcock (1913) considered that 'colonum' was a non-declining contraction, but dictionaries of Linnaeus' time treated it as a declining adjective. Because Linnaeus was the first to name the species (as "<i>Panicum</i> colonum"), it seems best to follow the practice considered correct in his day; hence "<i>E. colona</i>".</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Echinochloa colona
|author=
|authority=(L.) Link
|rank=species
|parent rank=genus
|synonyms=Echinochloa colonum
|basionyms=
|family=Poaceae
|distribution=Mont.;Oreg.;Wash.;Pacific Islands (Hawaii);Fla.;N.J.;N.Mex.;Tex.;La.;Tenn.;N.C.;S.C.;Pa.;Va.;Calif.;Puerto Rico;Virgin Islands;Ala.;Ark.;Vt.;Ill.;Ga.;Mass.;Ariz.;Md.;Okla.;Mo.;Kans.;Miss.;Ky.
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V25/V25_1118.xml
|subfamily=Poaceae subfam. Panicoideae
|tribe=Poaceae tribe Paniceae
|genus=Echinochloa
|species=Echinochloa colona
}}<!--

-->[[Category:Treatment]][[Category:Echinochloa]]