Perennial; culms slender, in large dense clumps about 1 m. high; blades narrow, elongate, attenuate to a fine point, usually flexuous, flat or becoming loosely rolled; panicles 15-30 cm. long, attenuate toward the tip, the slender branches ascending or spreading; spikelets 1.6-1.8 mm. long, short-pedicellate, subsecund on the under side of the branches; glumes subequal, obtuse, 0.3-0.5 mm. long.
A grass that keeps growing from year to year. The stalks are erect. It grows 30-90 cm high. The leaf blades are slender and 25 cm long. They are 1-3 mm wide. The flowers are in dense spike-like groups. These are 1-4 cm long.