View source for Urochloa fusca

{{Treatment/ID
|accepted_name=Urochloa fusca
|accepted_authority=(Sw.) B.F. Hansen & Wunderlin
|publications=
|common_names=Browntop signalgrass
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Urochloa fasciculata
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Panicum fasciculatum var. reticulatum
|authority=
|rank=variety
}} {{Treatment/ID/Synonym
|name=Panicum fasciculatum
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Brachiaria fasciculata
|authority=
|rank=species
}}
|hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Paniceae;Urochloa;Urochloa fusca
|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>[[Urochloa]]</div><div class="higher-taxon"><small>species</small>[[Urochloa fusca]]</div></div>
|volume=Volume 25
|mention_page=
|treatment_page=page 495
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>annual; tufted. <b>Culms</b> 15-120 cm, geniculate; nodes glabrous or shortly pilose. <b>Sheaths</b> glabrous or hispid, margins ciliate; ligules 1-1.5 mm; blades 3-33 cm long, 5-20 mm wide, glabrous or sparsely pilose on both surfaces, margins smooth or scabrous; collars pubescent. <b>Panicles</b> 5-15 cm long, 2-8 cm wide, simple, with 5-30 spikelike primary branches in more than 2 ranks; primary branches 2-10 cm, appressed to divergent, axils glabrous, axes 0.3-0.5 mm wide, triquetrous, scabrous or sparsely pilose; secondary branches usually present on the lower primary branches, pedicels scabrous and pubescent, shorter than the spikelets. <b>Spikelets</b> 2-3.4 mm long, 1.2-1.8 mm wide, obovoid, yellowish to reddish-brown or bronze-colored at maturity, mostly paired, in 2-4 rows, appressed to the branches. <b>Glumes</b> scarcely separate, rachilla internodes short, not pronounced; lower glumes 1-1.5 mm, at least lA as long as the spikelets, glabrous, (1)3-5-veined; upper glumes (2)2.2-3.1 mm, glabrous, 7-9-veined, cross venation evident throughout; lower florets usually staminate, sometimes sterile; lower lemmas 2-3.1 mm, usually glabrous, 7-veined, cross venation evident throughout; lower paleas present; upper lemmas 1.8-2.9 mm long, 1.1-1.7 mm wide, apices acute to rounded, mucronate; anthers 1-1.6 mm. <b>Caryopses</b> 1-1.7 mm; hila punctiform. <b>2n</b> = 18, 36.</span><!--

-->{{Treatment/Body
|distribution=Okla.;N.Mex.;Tex.;La.;Puerto Rico;Virgin Islands;Ala.;Ga.;Ariz.;Fla.
|discussion=<p><i>Urochloa fusca</i> grows from the southern United States to Peru, Paraguay, and Argentina, usually in moist, often disturbed areas at low elevations. It frequently occurs as a weed, but is occasionally grown for forage and grain.</p><!--
--><p>Plants having smaller, more compact panicles and larger (2.4-3.4 mm), mostly yellowish spikelets have been referred to as <i>Urochloa fusca</i> var. reticulata (Torr.) B.F. Hansen & Wunderlin. This variety is mainly found in the southwestern United States, but has been intro¬duced into other areas, including Australia. <i>Urochloa fusca</i> (Sw.) B.F. Hansen & Wunderlin <i></i>var.<i> fusca</i> has generally larger, more open panicles and smaller (2-2.5 mm), reddish-brown or bronze-colored spikelets. Much intergradation is reported between the two varieties. Further investigation is needed to establish that their recognition is warranted.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Urochloa fusca
|authority=(Sw.) B.F. Hansen & Wunderlin
|rank=species
|parent rank=genus
|synonyms=Urochloa fasciculata;Panicum fasciculatum var. reticulatum;Panicum fasciculatum;Brachiaria fasciculata
|basionyms=
|family=Poaceae
|illustrator=Linda A. Vorobik;Cindy Roché
|illustration copyright=Utah State University
|distribution=Okla.;N.Mex.;Tex.;La.;Puerto Rico;Virgin Islands;Ala.;Ga.;Ariz.;Fla.
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V25/V25_1317.xml
|subfamily=Poaceae subfam. Panicoideae
|tribe=Poaceae tribe Paniceae
|genus=Urochloa
|species=Urochloa fusca
}}<!--

-->[[Category:Treatment]][[Category:Urochloa]]