This native umbrella sedge grows up to 30 inches tall in dense colonies. The flower spikes form compound umbels. Each spike has 4 to 30 straw-colored spikelets, densely crowded on its axis (rachis).
Lakeshores and wet, muddy soils. Locally common in Fontenelle Forest in the field just east of the blind. Flowers in July and August.
The similar Yellow Nutsedge (Cyperus esculentus) has spikelets more loosely arranged along its rachis. Red-rooted Sedge (Cyperus erythrorhizos) has rich, copper-colored spikes, very densely clustered around its rachis.
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