Distribution: Vancouver Island, British Columbia, to Newfoundland, south to northern South America.
Habitat: Wet, saline or alkaline soils.
Flowers: June - September
Conservation Status: Not of concern
Diminutive, very slender perennial from slender rhizomes, forming dense mats; culms filiform, 2-6 cm. tall.
Leaves all basal and reduced to sheaths.
Spikelet terminal and solitary, 2-4.5 mm. long with 2-9 flowers; scales of the spikelets spirally arranged, 1.5-2 mm. long, the lowest one empty; perianth of 3-6 bristles, or none; stamens 3; style trifid, thickened at the base.
Achenes straw-colored, triangular 0.9-1.3 mm. long including the inconspicuous tubercle, which is confluent with the body of the achene.