View source for Poa autumnalis

{{Treatment/ID
|accepted_name=Poa autumnalis
|accepted_authority=Muhl. ex Elliott
|publications=
|common_names=Autumn bluegrass
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Poeae;Poa;Poa subg. Poa;Poa sect. Sylvestres;Poa autumnalis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Pooideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Poeae]]</div><div class="higher-taxon"><small>genus</small>[[Poa]]</div><div class="higher-taxon"><small>subgenus</small>[[Poa subg. Poa]]</div><div class="higher-taxon"><small>section</small>[[Poa sect. Sylvestres]]</div><div class="higher-taxon"><small>species</small>[[Poa autumnalis]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 514
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; not rhizomatous, not stoloniferous, loosely tufted. <b>Basal</b> branching mainly pseudointravaginal. <b>Culms</b> 23-86 cm tall, 0.8-1.8 mm thick, bases often decumbent. <b>Sheaths</b> closed for 1/3 – 1/2 their length; ligules 0.2-1.9(2.5) mm, smooth or obtuse; blades (0.5)1-4 mm wide, flat or folded, thin. <b>Panicles</b> (5)8-20 cm, erect or lax, broadly pyramidal at maturity, open, sparse, lower axils sometimes sparsely pubescent; nodes with 1-2(4) branches; branches 5-12 cm, spreading to reflexed, straight, angled, angles scabrous, with 3-8 spikelets in the distal 1/4-1/3. <b>Spikelets</b> 3-8.2 mm, laterally compressed; florets 2-4(6); rachilla internodes smooth, sparsely softly puberulent. <b>Glumes</b> distinctly shorter than the adjacent lemmas, distinctly keeled, keels scabrous; lower glumes subulate to lanceolate, (1)3-veined; upper glumes lanceolate to broadly lanceolate; calluses usually glabrous, rarely sparsely and shortly webbed; lemmas (2.8)3-4.6 mm, lanceolate, distinctly keeled, keels and marginal veins short- to long-villous, hairs extending up 3/4 of the keel, lateral veins prominent, intercostal regions softly puberulent, smooth, apices obtuse, blunt; palea keels softly puberulent to short-villous for much of their length, apices scabrous; anthers 1-1.4(2.6) mm. <b>2n</b> = 28.</span><!--

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|distribution=Md.;N.J.;Okla.;Miss.;Tex.;La.;Pa.;Del.;Mich.;Ala.;D.C;Tenn.;N.C.;S.C.;Va.;Ark.;Greenland;Nunavut;Que.;Ill.;Ga.;Ind.;Ky.;Fla.
|discussion=<p><i>Poa autumnalis</i> grows primarily in the southeastern United States, being found in forests of the eastern and western Appalachian piedmont and coastal plain. It is readily distinguished from other perennial species of the eastern United States by its combination of glabrous calluses and pubescent palea keels.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Poa autumnalis
|author=
|authority=Muhl. ex Elliott
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Poaceae
|distribution=Md.;N.J.;Okla.;Miss.;Tex.;La.;Pa.;Del.;Mich.;Ala.;D.C;Tenn.;N.C.;S.C.;Va.;Ark.;Greenland;Nunavut;Que.;Ill.;Ga.;Ind.;Ky.;Fla.
|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/V24/V24_716.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Poeae
|genus=Poa
|subgenus=Poa subg. Poa
|section=Poa sect. Sylvestres
|species=Poa autumnalis
}}<!--

-->[[Category:Treatment]][[Category:Poa sect. Sylvestres]]