The ragged, bright blue floral spikes of the Pickerel-weed blossom from June to October, in shallow water along the borders of ponds and streams where, so the disciples of Izaak Walton declare, the Pickerel lays its eggs. The rather stout stalk is smooth, round and green, and grows from one to four feet in height. The large, solitary, smooth, arrow or heart-shaped, dark green leaf is thick, tough and leathery. The margin is entire; the veins are numerous and paralleled, and the thick, round stem sheathes the stalk, which rises from a horizontal rootstock. The two-lipped, slightly curved, tubular flower is unpleasantly scented, and fades rapidly after it opens. The three-lobed, upper lip is broad and erect, and the longest or middle lobe has two yellow spots at its base. The lower lip has three spreading divisions. The six stamens and pistil are bright blue. They are densely crowded in a blunt terminal spike, and blossom spirally. The flower stem is sheathed, about midway, with a small, green leaf. This species is often found associated with the Arrowhead, and ranges from Nova Scotia to Minnesota, and south to the Gulf States.