Difference between revisions of "×achnella"
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|distribution=Alta.;B.C.;Man.;N.W.T.;Sask.;Yukon;Mont.;N.Dak.;Nebr. | |distribution=Alta.;B.C.;Man.;N.W.T.;Sask.;Yukon;Mont.;N.Dak.;Nebr. | ||
− | |discussion=<p>×Achnella comprises sterile hybrids between Achnatherum and Nassella. Only one such hybrid is known; it is restricted to the Flora region.</p> | + | |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= | |tables= | ||
|references={{Treatment/Reference | |references={{Treatment/Reference | ||
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|family=Poaceae | |family=Poaceae | ||
|illustrator=Cindy Roché | |illustrator=Cindy Roché | ||
+ | |illustration copyright=Utah State University | ||
|distribution=Alta.;B.C.;Man.;N.W.T.;Sask.;Yukon;Mont.;N.Dak.;Nebr. | |distribution=Alta.;B.C.;Man.;N.W.T.;Sask.;Yukon;Mont.;N.Dak.;Nebr. | ||
|reference=johnson1943b | |reference=johnson1943b | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
− | |source xml=https:// | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V24/V24_232.xml |
|subfamily=Poaceae subfam. Pooideae | |subfamily=Poaceae subfam. Pooideae | ||
|tribe=Poaceae tribe Stipeae | |tribe=Poaceae tribe Stipeae |
Revision as of 20:19, 16 December 2019
Plants perennial; cespitose, not rhizomatous. Culms to 90 cm, erect, glabrous, not branching at the upper nodes; prophylls shorter than the sheaths. Sheaths 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. Inflorescences panicles. Spikelets 6-8.5 mm, with 1 floret; rachillas not prolonged beyond the base of the floret; disarticulation above the glumes, beneath the floret. Glumes 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.
Distribution
Alta., B.C., Man., N.W.T., Sask., Yukon, Mont., N.Dak., Nebr.
Discussion
×Achnella comprises sterile hybrids between Achnatherum and Nassella. Only one such hybrid is known; it is restricted to the Flora region.