Tags: Fern.
The Water Horsetail (Equisetum fluviatile) also known as the Swamp Horsetail is a perennial horsetail that commonly grows in dense colonies along freshwater shorelines or in shallow water growing in ponds swamps ditches and other sluggish or still waters with mud bottoms. It is a herbaceous species growing 30–100 cm (rarely 140 cm) tall with erect dark green stems 2–8 mm in diameter smooth with about 10–30 fine ridges.
