This perennial grass has short
rhizomes and sometimes forms bunches. The stems grow up to 1.3 meters tall. The
inflorescence is a branching panicle of spikelets. The
spikelets normally have three perfect flowers in one sided panicles. Despite its name, the grass may also have spikelets with two or four flowers each, The
rachilla is longer than the fertile florets, and terminates in a club. The sterile florets are two empty lemmas. ==Habitat==