Saururus cernuus.

Pepper Family. June - Aug.

A plant 2 - 5 feet high. Found in swamps, shallow water. Rhode Island to Gulf of Mexico, west to Minnesota and Texas.

Flowers

White, fragrant, very small, crowded on slender spikes, nodding at the tip.

Leaves

Heart-shaped, converging ribs, dark green, on stout stems. Plant-stem jointed, sparingly branched, leafy.