It is native to western North America and grows on slopes, eroded areas, gravel, and dry habitats.

[1] Carex filifolia produces clumps of stems which are rounded or triangular, wiry, and angled or curved, reaching up to about 35 centimeters long.

[2] The leaves are narrow and rolled tightly, appearing quill-like.

The inflorescence is up to 3 centimeters long and has flowers coated with reddish scales.

This sedge is native to much of western North America, from Alaska to California and Manitoba to New Mexico, where it grows in moist and dry habitat.