Chair Makers RushScirpus americanus
Chair-maker's Rush, recognized by its stiff, triangular stems, is found in salt-water marshes and also by inland streams.
The stems, often shoulder-high, bear one to three leaves, and the flowers are borne in one to seven oblong, brown spikelets about one half an inch long.
Although the cluster of spikelets is terminal it appears as if it were lateral, since the solitary leaf at the base of the cluster rises like a continuation of the stem.
Chair Makers Rush picture