Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, and from Kansas east and north to the Atlantic Coast.
Habitat: Wet, saline or alkaline soils.
Flowers: June-September
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Wind
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.
PNW Herbaria: Specimen records of Eleocharis parvula in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Eleocharis parvula checklist entry
OregonFlora: Eleocharis parvula information
E-Flora BC: Eleocharis parvula atlas page
CalPhotos: Eleocharis parvula photos