[4] Eleocharis acicularis is an annual or perennial spikesedge with long, grasslike stems to about 15 centimeters (6 inches) in height, shorter in bog conditions, from a creeping rhizome.

In shallow water it will form short spikes of tiny flowers amongst flat overlapping bracts.

[4] Eleocharis acicularis is sold commercially as an aquascape plant suitable for inclusion in artificial aquatic environments.

[5][6] The specific epithet, acicularis, is derived from Latin and means "needle-shaped".

[7] Two varieties are recognized:[3] Media related to Eleocharis acicularis at Wikimedia Commons