View source for Eriochloa

{{Treatment/ID
|accepted_name=Eriochloa
|accepted_authority=Kunth
|publications=
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Paniceae;Eriochloa
|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>[[Eriochloa]]</div></div>
|volume=Volume 25
|mention_page=
|treatment_page=page 507
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>annual or perennial; cespitose, sometimes with short rhizomes or stolons, not producing subterranean spikelets. <b>Culms</b> 20-250 cm, erect or decumbent, usually with 2-5 nodes. <b>Sheaths</b> open; auricles absent; ligules membranous, ciliate. <b>Inflorescences</b> terminal, panicles of spikelike branches on elongate rachises; branches with many pedicellate, loosely appressed spikelets, terminating in a spikelet, without stiff bristles or flat bracts, spikelets in pairs, triplets, or solitary, often solitary distally when in pairs or triplets at the middle of the branches; pedicels terminating in a well-developed disk; disarticulation below the glume(s). <b>Spikelets</b> with 2 florets, lower florets usually sterile, upper florets bisexual. <b>Lower</b> glumes typically reduced (sometimes absent) and fused with the glabrous callus to form a cuplike structure; upper glumes lanceolate to ovate, glabrous or variously pubescent, 3-9-veined, unawned or awned; lower lemmas similar to the upper glumes in length, shape, venation, and pubescence, unawned; lower paleas absent to fully developed; upper lemmas lanceolate to ovate, indurate, rugose, dull, glabrous, rounded on the back, veins not pronounced, margins involute; anthers 3; lodicules 2, papery; styles with 2 branches, purple, plumose. <b>Caryopses</b> not longitudinally grooved; endosperm solid, x = 9.</span><!--

-->{{Treatment/Body
|distribution=D.C;Wis.;Pacific Islands (Hawaii);Fla.;N.Mex.;Tex.;La.;Ala.;Ind.;Kans.;Nebr.;Tenn.;N.Y.;Pa.;Nev.;Va.;Colo.;Ont.;Calif.;Puerto Rico;Virgin Islands;Ark.;Ill.;Ga.;Iowa;Ariz.;Md.;Ohio;Utah;Mo.;Minn.;Miss.;S.C.;Okla.;Ky.;Oreg.;N.C.
|discussion=<p><i>Eriochloa</i>, a genus of 20-30 species, grows in tropical, subtropical, and warm-temperate areas of the world. Eight species of <i>Eriochloa</i> are native to the Flora region and three are introduced. Of the three introduced species only two, <i>E. polystachya</i> and <i>E. pseudoacrotricha</i>, have become naturalized.</p><!--
--><p>Only one native species, <i>Eriochloa sericea</i>, is abundant enough to be an important forage species. The introduced <i>E. polystachya</i> is also used for this purpose.</p>
|tables=
|references={{Treatment/Reference
|id=shaw1981c
|text=Shaw, R.B. and F.E. Smeins. 1981. Some anatomical and morphological characteristics of the North American species of Eriochloa (Poaceae: Paniceae). Bot. Gaz. 142:534-544
}}{{Treatment/Reference
|id=shaw1987c
|text=Shaw, R.B. and R.D. Webster. 1987. The genus Eriochloa (Poaceae: Paniceae) in North and Central America. Sida 12:165-207.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Spikelets solitary at the middle of the branches, sometimes in unequally pedicellate pairs near the base.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Pedicels with more than 12 long (1.5-3 mm) hairs near the apices, densely hirsute or villous below, the hairs mostly about 0.1 mm long, but with some longer hairs interspersed among the short hairs.
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Blades 0.5-4 mm wide; spikelets 1.4-1.9 mm wide; plants perennial
|[[Eriochloa sericea|Eriochloa sericea]]
|-id=key-0-3
|3
|Blades 5-12 mm wide; spikelets 2-2.5 mm wide; plants annual
|[[Eriochloa villosa|Eriochloa villosa]]
|-id=key-0-2
|2
|Pedicels with fewer than 10 long (1.5-3 mm) hairs near the apices; variously hirsute below.
|[[#key-0-4| > 4]]
|-id=key-0-4
|4
|Lower floret of each spikelet with a palea
|[[Eriochloa michauxii|Eriochloa michauxii]]
|-id=key-0-4
|4
|Lower floret of each spikelet without a palea.
|[[#key-0-5| > 5]]
|-id=key-0-5
|5
|Rachises hairy, the longer hairs 0.1-0.8 mm long; spikelets 3.1-5 mm long, 1.2-1.7 mm wide
|[[Eriochloa contracta|Eriochloa contracta]]
|-id=key-0-5
|5
|Rachises glabrous or scabrous, not hairy; spikelets 2.7-3.6 mm long, 0.8-1.5 mm wide
|[[Eriochloa fatmensis|Eriochloa fatmensis]]
|-id=key-0-1
|1
|Spikelets in unequally pedicellate pairs or triplets at the middle of the branches, sometimes solitary distally.
|[[#key-0-6| > 6]]
|-id=key-0-6
|6
|Adaxial surfaces of the blades velvety to the touch; cauline internodes pubescent to pilose.
|[[Eriochloa lemmonii|Eriochloa lemmonii]]
|-id=key-0-6
|6
|Adaxial surfaces of the blades glabrous or hairy, but not velvety to the touch; cauline internodes glabrous or pubescent.
|[[#key-0-7| > 7]]
|-id=key-0-7
|7
|Upper lemmas unawned or the awns shorter than 0.2(0.3) mm.
|[[#key-0-8| > 8]]
|-id=key-0-8
|8
|Plants annual; upper glumes acute to acuminate, often terminating in awnlike apices up to 1.5 mm long; lower florets without paleas.
|[[#key-0-9| > 9]]
|-id=key-0-9
|9
|Longer pedicels of the spikelet pairs or triplets to 1 mm long; upper glumes acute to acuminate, unawned or awned, the awns up to 1.2 mm long
|[[Eriochloa acuminata|Eriochloa acuminata]]
|-id=key-0-9
|9
|Longer pedicels of the spikelet pairs to 3 mm long; upper glumes always acuminate, awned, the awns 0.5-3.5 mm long
|[[Eriochloa aristata|Eriochloa aristata]]
|-id=key-0-8
|8
|Plants perennial; upper glumes acute, unawned; lower floret of each spikelet usually with a palea.
|[[#key-0-10| > 10]]
|-id=key-0-10
|10
|Culms erect, not rooting at the lower nodes; spikelets 3.7-5.7 mm long, 1.3-1.8 mm wide; lower floret of each spikelet always with a palea.
|[[Eriochloa michauxii|Eriochloa michauxii]]
|-id=key-0-10
|10
|Culms decumbent, rooting at the lower nodes; spikelets 3.2-3.9 mm long, 1.1-1.3 mm wide; lower floret of each spikelet with or without a palea
|[[Eriochloa polystachya|Eriochloa polystachya]]
|-id=key-0-7
|7
|Upper lemmas awned, the awns 0.2-1.5 mm long.
|[[#key-0-11| > 11]]
|-id=key-0-11
|11
|Spikelets 2.7-3.6 mm long, 0.8-1.5 mm wide
|[[Eriochloa fatmensis|Eriochloa fatmensis]]
|-id=key-0-11
|11
|Spikelets 3.6-8.8 mm long, 0.9-1.6 mm wide.
|[[#key-0-12| > 12]]
|-id=key-0-12
|12
|Pedicels uniformly hirsute, the hairs about 0.1 mm long; plants rhizomatous
|[[Eriochloa punctata|Eriochloa punctata]]
|-id=key-0-12
|12
|Pedicels with some hairs 0.5-2.5 mm long, at least distally; plants not rhizomatous.
|[[#key-0-13| > 13]]
|-id=key-0-13
|13
|Plants perennial
|[[Eriochloa pseudoacrotricha|Eriochloa pseudoacrotricha]]
|-id=key-0-13
|13
|Plants annual.
|[[#key-0-14| > 14]]
|-id=key-0-14
|14
|Longer pedicels of the spikelet pairs or triplets to 1 mm long; upper glumes acute to acuminate, unawned or awned, the awns up to 1.2 mm long
|[[Eriochloa acuminata|Eriochloa acuminata]]
|-id=key-0-14
|14
|Longer pedicels of the spikelet pairs to 3 mm long; upper glumes always acuminate, awned, the awns 0.5-3.5 mm long
|[[Eriochloa aristata|Eriochloa aristata]]
|}
</div></div><!--

-->{{#Taxon:
name=Eriochloa
|author=Robert B. Shaw;Robert D. Webster;Christine M. Bern;
|authority=Kunth
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Poaceae
|distribution=D.C;Wis.;Pacific Islands (Hawaii);Fla.;N.Mex.;Tex.;La.;Ala.;Ind.;Kans.;Nebr.;Tenn.;N.Y.;Pa.;Nev.;Va.;Colo.;Ont.;Calif.;Puerto Rico;Virgin Islands;Ark.;Ill.;Ga.;Iowa;Ariz.;Md.;Ohio;Utah;Mo.;Minn.;Miss.;S.C.;Okla.;Ky.;Oreg.;N.C.
|reference=shaw1981c;shaw1987c
|publication title=
|publication year=
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V25/V25_1334.xml
|subfamily=Poaceae subfam. Panicoideae
|tribe=Poaceae tribe Paniceae
|genus=Eriochloa
}}<!--

-->[[Category:Treatment]][[Category:Poaceae tribe Paniceae]]