Annual herb, up to 200 mm tall. Leaves as long as stem. Umbel with bracts similar to leaves, overtopping umbel. Spikelets 4-12 together, clustered in subglobose heads. Fruits 5-9 per spikelet, 1.5-2.3 mm long. Fertile glume shortly mucronate. Glumes yellowish brown.
A herb or sedge. It is an annual plant.