View source for Festuca hyperborea

{{Treatment/ID
|accepted_name=Festuca hyperborea
|accepted_authority=Holmen ex Fred.
|publications=
|common_names=Northern fescue
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Poeae;Festuca;Festuca subg. Festuca;Festuca sect. Festuca;Festuca hyperborea
|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>[[Festuca]]</div><div class="higher-taxon"><small>subgenus</small>[[Festuca subg. Festuca]]</div><div class="higher-taxon"><small>section</small>[[Festuca sect. Festuca]]</div><div class="higher-taxon"><small>species</small>[[Festuca hyperborea]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 432
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>densely cespitose, with¬out rhizomes. <b>Culms</b> 5-15(20) cm, up to twice as tall as the vegetative shoot leaves, usually erect, sometimes semi-prostrate, glabrous, smooth. <b>Sheaths</b> closed for about 1/2 their length, glabrous, persistent; collars glabrous; ligules 0.1-0.5 mm; blades 0.5-1 mm in diameter, conduplicate, often curved or somewhat falcate, abaxial surfaces smooth or sparsely scabrous, adaxial surfaces scabrous, veins 5-7, ribs 3-5; abaxial sclerenchyma in 3-7 strands, usually less than twice as wide as high; adaxial sclerenchyma absent. <b>Flag</b> leaf sheaths usually somewhat inflated; flag leaf blades 0.5-5(8) mm. <b>Inflorescences</b> 1-2(2.5) cm, contracted, usually panicles, sometimes racemes, with 1-2 branches per node; branches erect, lower branches usually with 1-2 spikelets, sometimes more. <b>Spikelets</b> (3)4-5.5(7) mm, with 3-4(6) florets. <b>Glumes</b> exceeded by the upper florets, ovate to ovate-lanceolate, mostly glabrous and smooth, sometimes scabrous distally; lower glumes 1-3.5 mm; upper glumes 2.2-3.2 mm; lemmas 2.9-3.5(4.4) mm, ovate, apices scabrous and minutely bidentate, awns (0.5)1.4-2(3) mm, usually slightly subterminal, curved or slightly twisted; paleas about as long as or slightly longer than the lemmas, intercostal region smooth or scabrous distally; anthers 0.4-0.8(1.1) mm; ovary apices glabrous. <b>2n</b> = 28.</span><!--

-->{{Treatment/Body
|distribution=Greenland;Nfld. And Labr. (Nfld.);N.W.T.;Nunavut;Que.;Yukon
|discussion=<p><i>Festuca hyperborea</i> is a high arctic species that grows from Banks Island in the Canadian Arctic east to Greenland and south to Quebec. It differs from <i>F. brachyphylla</i> (p. 428) in its semi-prostrate habit, the loose sheaths and short blades of its flag leaves, the more pronounced ribs in its lower leaf blades, and its subterminal awn. It differs from <i>F. edlundiae</i> (see next) in having flag leaf blades shorter than 5 mm and smaller spikelets. It has frequently been included in <i>F. ovina</i> (p. 422).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Festuca hyperborea
|author=
|authority=Holmen ex Fred.
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Poaceae
|distribution=Greenland;Nfld. And Labr. (Nfld.);N.W.T.;Nunavut;Que.;Yukon
|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_614.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Poeae
|genus=Festuca
|subgenus=Festuca subg. Festuca
|section=Festuca sect. Festuca
|species=Festuca hyperborea
}}<!--

-->[[Category:Treatment]][[Category:Festuca sect. Festuca]]