View source for Aristida purpurascens

{{Treatment/ID
|accepted_name=Aristida purpurascens
|accepted_authority=Poir.
|publications=
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Aristidoideae;Poaceae tribe Aristideae;Aristida;Aristida purpurascens
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Aristidoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Aristideae]]</div><div class="higher-taxon"><small>genus</small>[[Aristida]]</div><div class="higher-taxon"><small>species</small>[[Aristida purpurascens]]</div></div>
|volume=Volume 25
|mention_page=
|treatment_page=page 338
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; cespitose, bases knotty, without rhizomes. <b>Culms</b> 40-100 cm tall, 1-4 mm thick at the base, erect, branching at the base, shoots becoming thickened and somewhat fan-shaped upwards. <b>Leaves</b> cauline; sheaths mostly longer than the internode, mostly or completely glabrous, sometimes pilose, particularly along the margins and at the throat, remaining intact at maturity; collars glabrous or pilose; ligules about 0.2 mm; blades 10-25 cm long, 1-3 mm wide, usually flat, usually lax, sometimes sinuous to curling at maturity, glabrous, pale green, drying brownish. <b>Inflorescences</b> paniculate, (15)20-55 cm long, 0.5-2(3) cm wide, often nodding; nodes glabrous, sometimes scabrous, lower nodes usually associated with more than 2 spikelets; primary branches 1-5 cm, tightly appressed to loosely ascending, without axillary pulvini, with 1-8 spikelets. <b>Spikelets</b> appressed. <b>Glumes</b> 5-10 mm, lower glumes from 3/4 as long as to 1-4 mm longer than the upper glumes, glabrous or sparsely appressed-pubescent, 1-2-veined, 1-keeled, tan to purplish, unawned or the awns no longer than 1 mm; calluses 0.4-0.8 mm; lemmas 4-8 mm, glabrous, mostly light tan or gray, often spotted or banded, beak not twisted, junction with the awns not evident; awns 8-25 mm, equal or subequal in length, curved, arcuate, or spirally coiled at the base, not disarticulating at maturity; central awns sometimes thicker than the lateral awns, erect to arcuate-reflexed; lateral awns straight and erect, ascending, or divergent; anthers 1 or 3, 1-1.5 mm, brown. <b>Caryopses</b> 3-5 mm, chestnut brown. <b>2n</b> = unknown.</span><!--

-->{{Treatment/Body
|distribution=Del.;D.C;Wis.;W.Va.;Fla.;N.J.;Conn.;Mass.;R.I.;La.;N.C.;Nebr.;Tenn.;S.C.;Pa.;Ind.;N.Y.;Va.;Ont.;Ala.;Ark.;Ill.;Ga.;Miss.;Kans.;Mich.;Md.;Okla.;Tex.;Ohio;Mo.;Ky.
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Central awns divaricate to reflexed, about twice as thick at the base as the lateral awns
|[[Aristida purpurascens var. virgata|Aristida purpurascens var. virgata]]
|-id=key-0-1
|1
|Central and lateral awns divergent, all about the same thickness at the base.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Lower glumes usually longer than the upper glumes; awns straight or only slightly contorted at the base; blades 1-3 mm wide, often curling
|[[Aristida purpurascens var. purpurascens|Aristida purpurascens var. purpurascens]]
|-id=key-0-2
|2
|Lower glumes shorter than or equal to the upper glumes; awns spirally contorted at the base; blades mostly about 1 mm wide, usually not curling
|[[Aristida purpurascens var. tenuispica|Aristida purpurascens var. tenuispica]]
|}
</div></div><!--

-->{{#Taxon:
name=Aristida purpurascens
|authority=Poir.
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Poaceae
|illustrator=Linda A. Vorobik;Andy Sudkamp
|illustration copyright=Utah State University
|distribution=Del.;D.C;Wis.;W.Va.;Fla.;N.J.;Conn.;Mass.;R.I.;La.;N.C.;Nebr.;Tenn.;S.C.;Pa.;Ind.;N.Y.;Va.;Ont.;Ala.;Ark.;Ill.;Ga.;Miss.;Kans.;Mich.;Md.;Okla.;Tex.;Ohio;Mo.;Ky.
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V25/V25_1026.xml
|subfamily=Poaceae subfam. Aristidoideae
|tribe=Poaceae tribe Aristideae
|genus=Aristida
|species=Aristida purpurascens
}}<!--

-->[[Category:Treatment]][[Category:Aristida]]