Bur-reed Family. June - July.
Found in swamps throughout temperate North America.
Borne in a dense, cylindrical head terminating stem 4 - 8 feet high.
Long, narrow, usually exceeding the flower stem in height.
T. angustifolia. Leaves narrower than those of the preceding, and the 2 parts of the flower-head are usually separated by a short gap. Plant 4 - 9 feet high. Maine to North Carolina and westward, mainly near the coast.