Swamp Horsetail

Swamp Horsetail

Swamp Horsetail Equisetum fluviatile grows in ponds or slow-moving waters. Its smooth, hollow, jointed stems may or may not have branches. The sheaths (skirt-like coverings) at each joint are closely clasped to the stem and are topped with sharply pointed dark-coloured teeth. In this picture, fine unbranched stems can be seen growing in shallow water. [CH] {FG}