This is one of the most distinctive and easy to identify grass species because of the bristle at the summit of the leaf sheath (Cope and Gray 2009; p 424). This is not the ligule; which is blunt and on the opposite side of the stem. The diagram in Poland and Clement (2009) is very good on p 98. Note the length of the scattered hairs on the surface of the leaf in the T/S of the leaf above.
Also note the ridges on the oval stem which has a hollow centre as well as long scattered hairs.