View source for Stipa ← Stipa 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=Stipa |accepted_authority=L. |publications= |basionyms= |synonyms= |hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Stipeae;Stipa |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 Stipeae]]</div><div class="higher-taxon"><small>genus</small>[[Stipa]]</div></div> |volume=Volume 24 |mention_page= |treatment_page=page 154 }}<!-- --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>annual or perennial; tufted or cespitose, not rhizomatous. <b>Culms</b> 10-200 cm, herbaceous, not branching at the upper nodes; basal branching usually intravaginal; prophylls shorter than the sheaths. <b>Leaves</b> mostly basal; cleistogenes usually not developed; sheaths open; auricles absent; ligules membranous, sometimes stiffly so, upper and lower ligules similar or upper ligules longer than those below; blades prominently ribbed, usually tightly convolute when dry. <b>Inflorescences</b> terminal panicles, usually contracted. <b>Spikelets</b> 12-90 mm, with 1 floret; rachillas not prolonged beyond the base of the floret; disarticulation above the glumes, beneath the floret. <b>Glumes</b> much longer than the floret, hyaline to membranous, usually acuminate, 1-3-veined; florets 3-27 mm, terete to slightly laterally compressed; calluses (1)1.5-6 mm, sharp or blunt, antrorsely hairy; lemmas coriaceous to indurate, tan to brown, smooth, glabrous or hairy, hairs sometimes uniformly distributed, sometimes in lines, margins flat, slightly overlapping at maturity, apices awned, lemma-awn junction evident; awns 50-500 mm, persistent, usually once- or twice-geniculate, sometimes plumose in whole or in part, basal segment often strongly twisted; paleas from shorter than to subequal to the lemmas, glabrous, 2-veined, not keeled, flat between the veins, apices sometimes scarious, sometimes similar in texture to the body; lodicules 2 or 3, glabrous or pilose; anthers 3; styles 2(3,4), free at the base, if 3 or 4, then 1 or 2 distinctly shorter. <b>Caryopses</b> fusiform, not ribbed, x = 11.</span><!-- -->{{Treatment/Body |discussion=<p>As treated here, <i>Stipa</i> is a genus of 150-200 species, all of which are native to Eurasia or northern Africa. Until recently, the genus was interpreted as including almost all species of Stipeae with cylindrical florets. In several parts of the world, this broader interpretation still prevails. Jacobs et al. (2006) found that even the European members of <i>Stipa</i> included in their study appeared to be polyphyletic. The most appropriate circumscription of the genus, and its size, is difficult to determine in the absence of a study that encompasses the Eurasian and North African members of the tribe.</p><!-- --><p>Two species of <i>Stipa</i> grow in the Flora region. <i>Stipa pulcherrima</i> is cultivated as an ornamental; <i>Stipa capensis</i> has been introduced, probably accidentally.</p> |tables= |references={{Treatment/Reference |id=freitag1985b |text=Freitag, H. 1985. The genus Stipa in southwest and south Asia. Notes Roy. Bot. Gard. Edinburgh 42:355^187 }}{{Treatment/Reference |id=jacobs2006b |text=Jacobs, S.W.L., R. Bayer, J. Everett, M.O. Arriaga, M.E. Barkworth, A. Sabin-Badereau, M.A. Torres, E Vazquez, and N. Bagnall. 2006. Systematics of the tribe Stipeae using molecular data. Aliso 23:349-361. }} }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Plants perennial; glumes 60-90 mm long; awns plumose on the distal segment, hairs 5-6 mm long |[[Stipa pulcherrima|Stipa pulcherrima]] |-id=key-0-1 |1 |Plants annual; glumes 12-20 mm long; awns glabrous on the distal segment |[[Stipa capensis|Stipa capensis]] |} </div></div><!-- -->{{#Taxon: name=Stipa |author=Mary E. Barkworth; |authority=L. |rank=genus |parent rank=tribe |synonyms= |basionyms= |family=Poaceae |reference=freitag1985b;jacobs2006b |publication title= |publication year= |special status= |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V24/V24_209.xml |subfamily=Poaceae subfam. Pooideae |tribe=Poaceae tribe Stipeae |genus=Stipa }}<!-- -->[[Category:Treatment]][[Category:Poaceae tribe Stipeae]] Templates used on this page: Template:Poaceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/ID (view source) Template:Treatment/Reference (view source) Return to Stipa.