View source for Schizachyrium scoparium

{{Treatment/ID
|accepted_name=Schizachyrium scoparium
|accepted_authority=(Michx.) Nash
|publications=
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Andropogon scoparius
|authority=
|rank=species
}}
|hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Andropogoneae;Schizachyrium;Schizachyrium scoparium
|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 Andropogoneae]]</div><div class="higher-taxon"><small>genus</small>[[Schizachyrium]]</div><div class="higher-taxon"><small>species</small>[[Schizachyrium scoparium]]</div></div>
|volume=Volume 25
|mention_page=
|treatment_page=page 669
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>cespitose or rhizomatous, green to purplish, sometimes glaucous. <b>Culms</b> 7-210 cm tall, usually 1-3 mm thick, not rooting or branching at the lower nodes. <b>Sheaths</b> rounded or keeled, glabrous or pubescent, sometimes glaucous; ligules 0.5-2 mm, collars neither elongate nor narrowed; blades 7-105 cm long, 1.5-9 mm wide, without a longitudinal stripe of white, spongy tissue. <b>Peduncles</b> 0.8-10 cm; rames 2.5-8 cm, partially to completely exserted, usually somewhat open; internodes 3-7 mm, usually arcuate at maturity, ciliate on at least the distal 1/2 (sometimes throughout), hairs 1.5-6 mm. <b>Sessile</b> spikelets 3-11 mm; calluses 0.5-1(2) mm, hairs 0.3-4 mm; lower glumes glabrous; upper lemmas membranous throughout, cleft to 1/2 their length; awns 2.5-17 mm. <b>Pedicels</b> 3-7.5 mm long, 0.1-0.2 mm wide at the base, flaring above midlength to 0.3-0.5 mm, straight or curving outwards. <b>Pedicellate</b> spikelets 0.7-10 mm, sometimes shorter than the sessile spikelets, sterile or staminate, unawned or awned, awns to 4 mm, when sterile, the lemma usually absent. <b>2n</b> = 40.</span><!--

-->{{Treatment/Body
|distribution=Minn.;Conn.;N.J.;N.Y.;Fla.;Pa.;Wash.;Del.;D.C.;Wis.;W.Va.;Kans.;Mo.;N.Dak.;Nebr.;Okla.;S.Dak.;Pacific Islands (Hawaii);Mass.;Maine;N.H.;R.I.;Vt.;Wyo.;N.Mex.;Tex.;La.;Tenn.;N.C.;S.C.;Ill.;Ohio;Va.;Colo.;Calif.;Ala.;Ark.;Ga.;Ind.;Iowa;Ariz.;Idaho;Md.;Utah;Alta.;B.C.;Man.;N.B.;N.S.;Ont.;Que.;Sask.;Mich.;Mont.;Miss.;Ky.
|discussion=<p><i>Schizachyrium scoparium</i> is a widespread grassland species extending from Canada to Mexico. It is one of the principal grasses in the tallgrass prairies that used to dominate the central plains of North America. It exhibits considerable variation, much of it clinal. The following varieties are recognized because they are morphologically, ecologically, and geographically distinctive.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Plants not cespitose, strongly rhizomatous; pedicellate spikelets sterile
|[[Schizachyrium scoparium var. stoloniferum|Schizachyrium scoparium var. stoloniferum]]
|-id=key-0-1
|1
|Plants usually cespitose, not or shortly rhizomatous; pedicellate spikelets staminate or sterile.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Pedicellate spikelets of the proximal spikelet units on each rame staminate, 5-10 mm long, with a lemma, pedicellate spikelets of the distal units usually smaller (1-4 mm) and sterile; sheaths and blades densely tomentose to glabrate
|[[Schizachyrium scoparium var. divergens|Schizachyrium scoparium var. divergens]]
|-id=key-0-2
|2
|Most pedicellate spikelets sterile, 1-6 mm long, without a lemma; sheaths and blades usually glabrous, occasionally pubescent
|[[Schizachyrium scoparium var. scoparium|Schizachyrium scoparium var. scoparium]]
|}
</div></div><!--

-->{{#Taxon:
name=Schizachyrium scoparium
|authority=(Michx.) Nash
|rank=species
|parent rank=genus
|synonyms=Andropogon scoparius
|basionyms=
|family=Poaceae
|illustrator=Linda A. Vorobik
|illustration copyright=Utah State University
|distribution=Minn.;Conn.;N.J.;N.Y.;Fla.;Pa.;Wash.;Del.;D.C.;Wis.;W.Va.;Kans.;Mo.;N.Dak.;Nebr.;Okla.;S.Dak.;Pacific Islands (Hawaii);Mass.;Maine;N.H.;R.I.;Vt.;Wyo.;N.Mex.;Tex.;La.;Tenn.;N.C.;S.C.;Ill.;Ohio;Va.;Colo.;Calif.;Ala.;Ark.;Ga.;Ind.;Iowa;Ariz.;Idaho;Md.;Utah;Alta.;B.C.;Man.;N.B.;N.S.;Ont.;Que.;Sask.;Mich.;Mont.;Miss.;Ky.
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V25/V25_1610.xml
|subfamily=Poaceae subfam. Panicoideae
|tribe=Poaceae tribe Andropogoneae
|genus=Schizachyrium
|species=Schizachyrium scoparium
}}<!--

-->[[Category:Treatment]][[Category:Schizachyrium]]