Difference between revisions of "Poa chaixii"

Vill.
Common names: Chaix's bluegrass
Introduced
Treatment appears in FNA Volume 24. Treatment on page 540.
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|publication year=
 
|publication year=
 
|special status=Introduced
 
|special status=Introduced
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V24/V24_757.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V24/V24_757.xml
 
|subfamily=Poaceae subfam. Pooideae
 
|subfamily=Poaceae subfam. Pooideae
 
|tribe=Poaceae tribe Poeae
 
|tribe=Poaceae tribe Poeae

Latest revision as of 16:25, 11 May 2021

Please click on the illustration for a higher resolution version.
Illustrator: Sandy Long

Copyright: Utah State University

Plants perennial; densely tufted, not stoloniferous, not rhizomatous. Basal branching extravaginal. Culms 50-120 cm, stout. Sheaths closed for 1/2 - 3/4 their length, distinctly compressed, keels winged, bases of basal sheaths glabrous; ligules 1-2 mm, smooth or sparsely scabrous, apices truncate; blades (4)6-15 mm wide, flat or folded, apices broadly and abruptly prow-shaped. Panicles 10-20 cm, ovoid to pyramidal, open, spikelets numerous, with 3-5 branches per node; branches ascending to spreading, angled, angles densely scabrous. Spikelets 4-9 mm, laterally compressed; florets 3-5; rachilla internodes about 1 mm, scabrous, glabrous. Glumes distinctly keeled, keels scabrous; lower glumes 1-3-veined; calluses glabrous; lemmas 3.5-4.5 mm, narrowly lanceolate, distinctly keeled, scabrous, glabrous throughout, lateral veins prominent, apices acute; palea keels scabrous, glabrous; anthers 1.5-3 mm. 2n = 14.

Discussion

Poa chaixii was introduced from Europe as an attractive ornamental, and has occasionally escaped. A population in southwestern Quebec has been extirpated.

Selected References

None.

Lower Taxa

None.