Deschampsia elongata is a species of grass known by the common name slender hairgrass.

It is a perennial grass forming dense clumps sometimes exceeding a meter in height.

Most of the leaves are located in a tuft about the base of the stems.

[2] The inflorescence is a thin row of V-shaped spikelets arranged parallel to and mostly flat against the stem.

[3] Data related to Deschampsia elongata at Wikispecies