Wirestem muhly is a perennial grass and often grows in big clumps like this:
Stems and leaves.
Wirestem muhly reproduces, and colonizes new territory, by means of rhizomes (underground shoots):
Seedheads. Compare the two pictures on the left (left, middle) with the seedhead picture of quackgrass (far right):
The collar region (below) of wirestem muhly, the joining of the stem (culm) and the leaf blade. Notice the membranous ligule