HABIT
A long-lived (i.e. perennial) grass usually growing 0.6-1 m tall, but occasionally reaching up to 1.5 m in height. Its upright (i.e. erect), straggling or trailing stems are up to 2 m long, and the flowering stems (i.e. culms) tend to be more upright (i.e. erect or geniculately ascending) and taller.