Equisetum debile is the only living genus in the Equisetaceae. They mostly grow 0.2-1.5 m tall. It herb is very strange and the plant has a creeping. The roots at the nodes are turned into numerous hollow stems of two kinds. Equisetum debile begins growth in two stages, initial growth of the plant is through a fertile and flesh colored stem, this stem can grow to a height of four to seven inches and comes out a cone like spike - this spike contains spores of the plant. The initial stem does not last long and withers away. The second stem is a green and sterile structure reaching a length of eighteen inches in height and crowned by whorls of small branches - this is the final shape that the plant will take for its life span.
This plant has a long history of medicinal uses, although modern sources include cautions with regard to its use.