Tufted hairgrass (Deschampsia cespitosa) belongs to the Poaceae (the Grass family). It is a perennial herb that is distributed widely to many arctic and temperate regions. This herb grows in coastal terraces, tidal marshes, moist subalpine meadows, open forests, and alpine areas above timberline, and up to a height of 50-150 cm. The stems are erect and the leaves are linear, flat or rolled, and mostly basal in a dense tuft. The flowers bloom from May to September and seeds mature from July to November. The panicle is upright to nodding, loosely branched, open, and 10-25 cm long. There are two florets per spikelet.