View source for ×achnella

{{Treatment/ID
|accepted_name=×achnella
|accepted_authority=Barkworth
|publications=
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Stipeae;×achnella
|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>[[×achnella]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 169
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; cespitose, not rhizomatous. <b>Culms</b> to 90 cm, erect, glabrous, not branching at the upper nodes; prophylls shorter than the sheaths. <b>Sheaths</b> mostly glabrous, margins sparsely ciliate, hairs longer distally; cleistogenes not present in the basal sheaths; collars without tufts of hair at the sides; auricles absent; ligules scarious, glabrous; blades of basal leaves to 40 cm long, 1-1.5 mm wide, convolute when dry, tapering to the narrowly acute apices, flag leaf blades longer than 10 mm, bases about as wide as the top of the sheaths. <b>Inflorescences</b> panicles. <b>Spikelets</b> 6-8.5 mm, with 1 floret; rachillas not prolonged beyond the base of the floret; disarticulation above the glumes, beneath the floret. <b>Glumes</b> saccate-lanceolate, tapering from above midlength into elongate apices, midveins extending to or nearly to the apices, apices narrowly acute to acuminate; lower glumes 6-8.5 mm; upper glumes 6.5-7.5 mm, slightly narrower than the lower glumes; florets 4-5 mm, lengths more than 3 times the widths; calluses about 0.7 mm, blunt; lemmas coriaceous, evenly hairy throughout, hairs 1-2 mm, apical hairs not longer than those below; awns twisted, not or once-geniculate, readily deciduous; paleas more than 2/3 as long as the lemmas, veins ending at the apices; anthers poorly developed, indehiscent, sometimes with 1 or 2 penicillate hairs.</span><!--

-->{{Treatment/Body
|distribution=Alta.;B.C.;Man.;N.W.T.;Sask.;Yukon;Mont.;N.Dak.;Nebr.
|discussion=<p>×Achnella comprises sterile hybrids between <i>Achnatherum</i> and <i>Nassella</i>. Only one such hybrid is known; it is restricted to the Flora region.</p>
|tables=
|references={{Treatment/Reference
|id=johnson1943b
|text=Johnson, B.L. and G.A. Rogler. 1943. A cytotaxonomic study of an intergeneric hybrid between Oryzopsis bymenoides and Stipa viridula. Amer. J. Bot. 30:49-56.
}}
}}<!--

--><!--

-->{{#Taxon:
name=×achnella
|author=Mary E. Barkworth;
|authority=Barkworth
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Poaceae
|distribution=Alta.;B.C.;Man.;N.W.T.;Sask.;Yukon;Mont.;N.Dak.;Nebr.
|reference=johnson1943b
|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_232.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Stipeae
|genus=×achnella
}}<!--

-->[[Category:Treatment]][[Category:Poaceae tribe Stipeae]]