Distribution: Widespread in temperate amd cold-temperate regions of the Northern hemisphere; common in the Pacific Northwest.

Habitat: Wet places from sea level to moderate elevations in the mountains; tolerant of alkali.

Flowers: May - August

Origin: Native

Conservation Status: Not of concern

Herbaceous, rhizomatous perennial, the culms scattered or in clumps along the rhizome, slender to stout, 1-10 dm. tall.

Herbaceous, rhizomatous perennial, the culms scattered or in clumps along the rhizome, slender to stout, 1-10 dm. tall.

Spikelet terminal and solitary, 5-23 mm. long, lanceolate in outline, brown or chestnut-colored; scales of the spikelet spirally arranged 2-4.5 mm. long, with 1 or 2 empty scales at the base of the spikelet, the lower one encircling the culm; perianth bristles usually 4, retrorsely barbed; stamens 2; styles bifid, thickened at the base.

Achenes lenticular, yellow to brown, 1.5-2.5 mm. long, including a tubercle 0.4-0.7 mm. long.