View source for Avenula ← Avenula You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page. {{Treatment/ID |accepted_name=Avenula |accepted_authority=(Dumort.) Dumort. |publications= |basionyms= |synonyms= |hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Poeae;Avenula |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>[[Avenula]]</div></div> |volume=Volume 24 |mention_page= |treatment_page=page 698 }}<!-- --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; cespitose, sometimes stoloniferous. <b>Culms</b> 10-110 cm. <b>Sheaths</b> usually open, sometimes closed for most of their length; auricles absent; ligules membranous, acute to truncate; blades flat or folded, adaxial surfaces unribbed, with a furrow on either side of the midveins, margins sclerenchymatous. <b>Inflorescences</b> reduced panicles, many branches (all branches in depauperate specimens) with a single spikelet. <b>Spikelets</b> with 2-7 florets; rachillas glabrous on the side adjacent to the paleas, hairy elsewhere; disarticulation above the glumes, beneath the florets. <b>Glumes</b> as long as or longer than the adjacent lemmas, 1-3-veined, unawned; calluses acute; lemmas 5-7-veined, obtuse, bifid, awned from about midlength, awns geniculate, flattened or terete and twisted below the bend; paleas with lateral wings less than 1/2 as wide as the intercostal region, apices shallowly bifid; lodicules 2, entire, unlobed; anthers 3. <b>Caryopses</b> more than twice as long as the hila, shorter than the lemmas, concealed at maturity; endosperm liquid or semi-liquid, x = 7.</span><!-- -->{{Treatment/Body |distribution=N.J.;Minn.;Mass.;N.Mex.;Del.;N.Dak.;Mont.;S.Dak.;Vt.;Colo.;Alta.;B.C.;Man.;N.W.T.;Ont.;Que.;Sask.;Yukon;Wyo.;Conn. |discussion=<p><i>Avenula</i> is a genus of approximately 30 species, most of which are European. One species is native to the Flora region, and one has been introduced. The genus is frequently included in <i>Helictotrichon</i>, from which it differs in having acute cauline ligules, unribbed leaves, rachillas glabrous on one side, unlobed lodicules, short hila, liquid to semi-liquid endosperm, and no sclerenchyma ring in its roots.</p> |tables= |references={{Treatment/Reference |id=dixon1991a |text=Dixon, J.M. 1991. Biological flora of the British Isles: Avenula (Dumort.) Dumort. J. Ecol. 79:829-865 }}{{Treatment/Reference |id=gervais1973a |text=Gervais, C. 1973. Contribution a l'etude cytologique et taxonomique des avoines vivaces. Denkschr. Schweiz. Naturf. Ges. 88:3-166 }}{{Treatment/Reference |id=holub1963a |text=Holub, J. 1963. Ein Beitragzur Abgrenzung der Gattungen in der Tribus Aveneae: Die Gattung Avenochloa Holub. Acta Horti Bot. Prague 1962:75-86. }} }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Sheaths closed for less than 1/3 their length, sheaths and blades smooth to scabridulous; panicles 4-13 cm long, usually 0.8-2.5 cm wide; awns 10-17 mm long, flattened below the bend |[[Avenula hookeri|Avenula hookeri]] |-id=key-0-1 |1 |Sheaths closed to near the top, sheaths and blades usually pubescent; panicles 6-20 cm long, 2-6 cm wide; awns 12-26 mm long, terete below the bend |[[Avenula pubescens|Avenula pubescens]] |} </div></div><!-- -->{{#Taxon: name=Avenula |author=Gordon C. Tucker; |authority=(Dumort.) Dumort. |rank=genus |parent rank=tribe |synonyms= |basionyms= |family=Poaceae |distribution=N.J.;Minn.;Mass.;N.Mex.;Del.;N.Dak.;Mont.;S.Dak.;Vt.;Colo.;Alta.;B.C.;Man.;N.W.T.;Ont.;Que.;Sask.;Yukon;Wyo.;Conn. |reference=dixon1991a;gervais1973a;holub1963a |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_987.xml |subfamily=Poaceae subfam. Pooideae |tribe=Poaceae tribe Poeae |genus=Avenula }}<!-- -->[[Category:Treatment]][[Category:Poaceae tribe Poeae]] Templates used on this page: Template:Poaceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/Body/Maps (view source) Template:Treatment/ID (view source) Template:Treatment/Reference (view source) Return to Avenula. Facts... more about "Avenula"RDF feedAuthorGordon C. Tucker +Authority(Dumort.) Dumort. +DistributionN.J. +, Minn. +, Mass. +, N.Mex. +, Del. +, N.Dak. +, Mont. +, S.Dak. +, Vt. +, Colo. +, Alta. +, B.C. +, Man. +, N.W.T. +, Ont. +, Que. +, Sask. +, Yukon +, Wyo. + and Conn. +Number of lower taxa2 +Referencedixon1991a +, gervais1973a + and holub1963a +Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse grained fna xml/V24/V24 987.xml +SynonymsGramineae +Taxon familyPoaceae +Taxon nameAvenula +Taxon parentPoaceae tribe Poeae +Taxon rankgenus +VolumeVolume 24 +