Rhynchospora inundata is commonly found growing in bogs, marshes, wet flatwoods, cypres swamps and lake and pond margins nearly throughout Florida (Wunderlin, 2003). This colony-forming species is one of the largest of the beakrushes, and might easily be confused with Rhynchospora corniculata. Its seeds are eaten by ducks.
Inundated beakrush is a beakrush sedge. from rhizomes; stems to 4 ft. tall, triangular; leaf blades to 3/8 in. wide, distinctive basal cluster; inflorescence at stem tip, open, branched, loose clusters of spikelets at branch tips; bracts several, leaf-like; spikelets lance-shaped, brown to 1 in. long including “beak”; nutlet with evident beak and 5-6 bristles longer than fruit but shorter than beak.