sedge

nouns

grasslike or rushlike plant growing in wet places having solid stems, narrow grasslike leaves and spikelets of inconspicuous flowers

sedge

is derived from

is a member of

bulrush; chufa; cotton grass; papyrus; umbrella plant

is a type of (narrower)

a semiaquatic plant that grows in soft wet land; most are monocots: sedge, sphagnum, grasses, cattails, etc; possibly heath