The inflated leaf sheath that subtends the inflorescence is diagnostic of Phleum alpinum.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/35478170@N08">Matt Lavin</a> from Bozeman, Montana, USA
CC BY-SA 2.0
<p><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/plant_diversity/3883293886/">Phleum alpinum</a>
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<ul><li>Uploaded by <a href="//commons.wikimedia.org/wiki/User:Jacopo_Werther" title="User:Jacopo Werther">Jacopo Werther</a></li></ul>